induwara.lk

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A growing collection of free, no-signup utilities. Tax and finance calculators, document and image converters, developer helpers, AI helpers, and more.

Live (480)

LiveEducation

Sri Lanka A/L Z-Score Calculator

Compute your Sri Lankan G.C.E. Advanced Level Z-score from three subject raw marks using the official UGC formula, with per-subject breakdown and an indicative percentile band.

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LiveAI

AI Voice Generator

Turn text into realistic AI speech and download the MP3 — free, no signup. 5 natural voices, 29 languages, and emotion effects like whisper, laugh, and pauses. Great for videos, narration, e-learning, and accessibility.

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LiveText

Case Converter

Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE and dot.case — all ten conversions at once, runs in your browser, no signup.

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LiveUtility

Random Name Generator

Generate random first and last names filtered by origin (English, Sinhala, Tamil, Spanish, Japanese, fantasy, sci-fi), gender, and format (full name, username, email). Shareable seeds, no signup, runs in your browser.

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LiveEducation

A/L Combination Validator

Pick any three A/L subjects and see which UGC stream the combination unlocks for state-university admission — Bio, Maths, Eng Tech, Bio-systems Tech, Commerce or Arts. Sources cited.

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LiveUtility

JSON to TypeScript

Paste any JSON and instantly get clean TypeScript interfaces or type aliases — nested objects extracted into named types, array elements merged, null and missing keys turned into optional/nullable members. Runs entirely in your browser, no upload.

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LiveFinance

No-Pay Leave Calculator

Calculate the exact salary cut for no-pay (unpaid) leave days in Sri Lanka under the 30-day, working-days, and actual-days methods, with the EPF/ETF impact for the month. Free, no signup, sources cited.

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LiveFinance

Sri Lanka Tax Calculator

Calculate your monthly and annual personal income tax (APIT) for Sri Lanka's 2025/26 year of assessment using the official IRD brackets.

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LiveUtility

Sri Lanka NIC Decoder

Decode any Sri Lankan NIC (old 9-digit + V/X or new 12-digit) to its date of birth, age, gender, voter status, and serial. Validates structure instantly, runs entirely in your browser.

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LiveFinance

Sri Lanka EPF Calculator

Project your EPF and ETF balance at retirement using statutory contribution rates and the latest CBSL-declared interest. Year-by-year accumulation, no signup, sources cited.

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LiveFinance

Sri Lanka EMI Calculator

Calculate monthly EMI, total interest, and a full amortisation schedule for housing, vehicle, personal, and education loans in Sri Lanka. Compares BoC, NSB, Commercial, HNB, Sampath, DFCC, NDB, and People's Bank at their current published rates.

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LiveFinance

Sri Lanka FD Calculator

Calculate maturity value, interest earned, and net-of-WHT return on Sri Lankan rupee fixed deposits, with a side-by-side comparison across the major licensed banks.

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LiveUtility

SL Working Days Calculator

Count working days in Sri Lanka with all 2026 public holidays built in. For leave planning, notice periods, and payroll. Mercantile, Bank, Government sectors. Free.

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LiveDocuments

PDF to Word

Inspect a PDF locally in your browser and get routed to the best free, no-signup converter for that exact file — privacy-first, sources cited.

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LiveDocuments

Word to PDF

Inspect a Word (.docx) document locally in your browser and get routed to the best free, no-signup PDF converter for that exact file — privacy-first, sources cited.

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LiveDocuments

PDF to JPG

Inspect a PDF locally in your browser, count its pages, and get routed to the best free, no-signup PDF-to-JPG converter for that exact file — privacy-first, sources cited.

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LiveDocuments

JPG to PDF

Combine JPG, PNG, or WebP images into a single PDF entirely in your browser. Pick page size, orientation, and margin, reorder pages, and download — files never leave your device.

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LiveDocuments

PDF Merger

Combine multiple PDFs into one document entirely in your browser. Drag to reorder, preview each file, and download the merged result — files never leave your device.

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LiveDocuments

PDF Compressor

Reduce PDF file size entirely in your browser. Pick lossless, balanced, or strong compression — files never leave your device, text stays selectable, and metadata is stripped on demand.

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LiveDocuments

PDF Splitter

Split a PDF into multiple files by page range, every N pages, or one PDF per page — entirely in your browser. Pages stay byte-identical to the source; files never leave your device.

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LiveDocuments

PDF Rotator

Rotate one page, a range, or every page of a PDF by 90°, 180°, or 270° — entirely in your browser. The page's /Rotate entry changes; the content stream stays byte-identical, so there is no quality loss.

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LiveDocuments

PDF Unlock

Strip the /Encrypt dictionary from a PDF you own entirely in your browser. Detects RC4 and AES variants, decodes which user-access restrictions are set, and rebuilds the file with no security handler — files never leave your device.

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LiveDocuments

Excel to PDF

Inspect an Excel (.xlsx) workbook locally in your browser, classify it by size, and get routed to the best free, no-signup PDF converter for that file — privacy-first, sources cited.

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LiveDocuments

PowerPoint to PDF

Inspect a PowerPoint (.pptx) deck locally in your browser, count slides, and get routed to the best free, no-signup PDF converter for that file — privacy-first, sources cited.

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LiveDocuments

HTML to PDF

Convert any HTML snippet or full document to a PDF in your browser. Pick page size, orientation, and margin — files never leave your device, text stays selectable in the output.

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LiveDocuments

EPUB to PDF

Convert any EPUB e-book to a printable PDF entirely in your browser. The spine order, chapter titles, and inline images are preserved — files never leave your device, output text stays selectable.

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LiveDocuments

CSV to Excel

Convert any CSV (or TSV) file to .xlsx in your browser. Auto-detects comma, semicolon, tab, or pipe delimiters; infers number, date, and boolean columns; Sinhala and Tamil text round-trips cleanly. Files never leave your device.

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LiveDocuments

Image Compressor

Reduce JPG, PNG, and WebP file sizes by 50–90% entirely in your browser. Pick quality, resize, or convert format — files never leave your device, batch upload supported.

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LiveDocuments

Image Resizer

Resize JPG, PNG, and WebP images in your browser by exact pixels, percentage, longest-side cap, or a one-click social-media preset. Files never leave your device, aspect ratio is preserved, sources cited.

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LiveDocuments

Image Format Converter

Convert images between JPG, PNG, and WebP entirely in your browser, and decode AVIF or HEIC inputs without installing a thing. Batch supported, files never leave your device, sources cited.

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LiveDocuments

Image Cropper

Crop JPG, PNG, and WebP images by aspect ratio (1:1, 4:3, 16:9, 9:16, golden) or free-form, entirely in your browser. Drag, nudge, or type exact coordinates — files never leave your device, no resampling.

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LiveDocuments

Background Remover

Remove the background from any photo entirely in your browser. Runs the ISNet AI model via ONNX runtime — your image never leaves your device. Transparent PNG or WebP output, JPEG flatten on a colour you pick.

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LiveDocuments

Image to Text (OCR)

Extract text from images, screenshots, and scans entirely in your browser. Tesseract LSTM with English, Sinhala, and Tamil. Files never leave your device, no signup, sources cited.

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LiveDocuments

Markdown to PDF

Convert any Markdown — CommonMark or GitHub-Flavored — to a printable PDF entirely in your browser. GFM tables, code blocks, and images are preserved with selectable text. Files never leave your device.

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LiveDocuments

Passport Photo Maker

Resize and crop a portrait to the exact passport, visa, or ID-photo spec for 24 countries — Sri Lanka, US, UK, Schengen, India, and more. 300 DPI output, optional print sheet, files never leave your device.

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LiveDocuments

GIF Maker

Stitch JPG, PNG, WebP, AVIF, or GIF frames into a single animated GIF entirely in your browser. Set frame delay, loop count, and output dimensions — files never leave your device, no signup, sources cited.

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LiveDocuments

Video to GIF

Convert MP4, WebM, or MOV clips into animated GIFs entirely in your browser. Pick start time, duration, fps, and size — files never leave your device, no signup, sources cited.

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LiveDocuments

Image Color Picker

Pick any colour from a photo, screenshot, or design mockup and get HEX, decimal RGB, HSL, and CMYK in one click. Runs entirely in your browser — no upload, no signup.

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LiveDocuments

Image Upscaler

Enlarge JPG, PNG, and WebP images 2×, 3×, or 4× with bicubic resampling plus an unsharp-mask sharpening pass. Runs entirely in your browser — no upload, no signup.

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LiveDocuments

Watermark Adder

Stamp a copyright line, signature, or logo onto a JPG, PNG, or WebP photo entirely in your browser. Nine anchor positions, adjustable opacity, rotation, and size — files never leave your device.

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LiveDocuments

Image to ASCII Art

Convert any image into ASCII art entirely in your browser. Four character ramps, monochrome or 24-bit color, adjustable brightness and contrast — files never leave your device, sources cited.

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LiveDocuments

Favicon Generator

Generate favicon.ico, every PNG size (16, 32, 48, 180, 192, 512), the Web App Manifest, and the HTML <link> snippet from one image — entirely in your browser. No upload, no signup, sources cited.

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LiveUtility

Meta Tag Preview

See exactly how your page will look when shared on Google, X (Twitter), Facebook, LinkedIn, and Slack. Paste a URL or fill the fields — runs in your browser, validator built in.

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LiveUtility

Word Counter

Count words, characters, sentences, paragraphs, reading time, and speaking time as you type. Two-method verified, Unicode-aware, runs entirely in your browser.

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LiveUtility

Character Counter

Count characters with live limit indicators for Twitter / X, SMS (GSM-7 & UCS-2), meta description, Instagram, LinkedIn and more. UTF-16, code-point, and grapheme counts. Runs in your browser.

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LiveText

Lorem Ipsum Generator

Generate classic Lorem Ipsum, hipster ipsum, or tech-jargon placeholder text by words, sentences, or paragraphs. Deterministic seed, one-click copy, runs entirely in your browser.

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LiveText

Text to Speech

Convert text to spoken audio using your browser's built-in voices. Adjust rate, pitch, and volume — English, Sinhala, Tamil and dozens more. Runs entirely on your device, files never leave your browser.

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LiveText

Speech to Text

Dictate any language to text using your browser's built-in speech recognition. English, Sinhala, Tamil and 30+ more, with .srt and .vtt subtitle export. Runs entirely in your browser.

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LiveText

Mirror Text

Generate reversed, mirrored, upside-down, and zalgo text for social media bios and creative posts. Unicode-aware, emoji-safe, runs entirely in your browser.

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LiveText

Find and Replace

Bulk find-and-replace on any text. Case-sensitive, whole-word, regex, and multi-rule modes with live match counts. Unicode-aware boundaries, runs entirely in your browser.

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LiveText

Dedupe Lines

Remove duplicate lines from any text. Case-sensitive, whitespace-trim, keep-first or keep-last, blank-line preservation. Order-preserving, runs entirely in your browser.

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LiveText

Sort Lines

Sort lines of text alphabetically, naturally, numerically, by length, or randomly. Ascending or descending, locale-aware, stable. Runs entirely in your browser.

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LiveText

Plagiarism Check

Compare two pieces of text and find the matching phrases with word-level n-gram overlap. Highlights reused passages in both documents, reports Jaccard similarity and one-sided containment. Runs entirely in your browser, no signup, sources cited.

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LiveText

Text Diff Checker

Compare two pieces of text side-by-side and see line-by-line and word-by-word differences highlighted. LCS-based, two-pass verified, runs entirely in your browser.

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LiveFinance

Discount Calc

Quick math for sale prices, tip percentages, percentage increase or decrease, and tax-inclusive vs tax-exclusive prices. Four calculators in one, runs entirely in your browser, sources cited.

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LiveText

Reading Time Estimator

Estimate reading time for any article in seconds. Choose English prose (200 wpm), technical (130 wpm), or audiobook narration (155 wpm) — or set a custom pace. Sources cited, runs entirely in your browser.

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LiveText

Slug Generator

Turn any title into a clean, SEO-friendly URL slug. Handles Sinhala, Tamil, accented Latin, and ligatures with a simplified ISO 15919 transliteration. RFC-3986 safe, runs entirely in your browser, no signup.

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LiveText

Random Text Generator

Generate random English words, sentences, paragraphs, names, or writing prompts in one click. Deterministic seed, copy-ready output, five modes — international and Sri Lankan name banks included. Runs entirely in your browser, no signup.

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LiveUtility

JSON Formatter

Format, validate, and minify JSON in your browser. Pinpoints syntax errors by line and column, accepts the JSON5 superset (comments, trailing commas, unquoted keys), round-trip verified. No uploads.

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LiveUtility

Base64

Encode text or files to Base64 and decode Base64 back to text or a download. Standard and URL-safe alphabets, with or without '=' padding, UTF-8 round-trip verified. Runs entirely in your browser.

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LiveUtility

JSON Converter

Convert JSON to CSV (RFC 4180), XML (1.0 well-formed), or YAML (1.2 block-style) in your browser. Flattens nested objects with a configurable separator. Round-trip verified, no uploads.

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LiveUtility

HTML CSS JS Minifier

Minify or beautify HTML, CSS, and JavaScript in your browser. Tag-aware HTML, RFC-style CSS, JSMin-safe JS — files never leave your device, no signup.

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LiveUtility

Regex Tester

Test JavaScript regular expressions against any text with live highlighting, capture groups, replacement preview, flag toggles, and a construct-by-construct explainer. ECMA-262, runs entirely in your browser.

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LiveUtility

URL Encoder

Percent-encode text for safe inclusion in URLs, or decode URL-encoded strings back to plain text. Component, whole-URI, and form-urlencoded profiles. RFC 3986 conformant, UTF-8 round-trip verified. Runs entirely in your browser.

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LiveUtility

UUID Generator

Generate UUID v4 (random) or v7 (time-ordered) in your browser. Bulk up to 1,000 at a time, copy or download as .txt/.csv, inspect any UUID for version, variant, and embedded timestamp. RFC 9562 conformant.

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LiveUtility

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes of text or files entirely in your browser. Optional HMAC mode with a secret key. RFC 1321 / FIPS 180-4 / RFC 2104 conformant, no uploads.

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LiveUtility

Color Converter

Convert any color between HEX, RGB, HSL, HSV, CMYK, OKLCH and the 148 CSS named colors. WCAG contrast and color-blindness simulation built in. Runs entirely in your browser.

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LiveUtility

JWT Decoder

Paste any JSON Web Token to decode the header, payload, and signature, classify each claim, and verify HS256 signatures with the Web Crypto API. RFC 7519 / 7515 conformant, runs in your browser.

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LiveUtility

Gradient Generator

Build CSS linear, radial, and conic gradients visually. Multi-stop support, angle controls, live preview, and copy-ready CSS or Tailwind v4 — runs entirely in your browser, no signup.

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LiveUtility

Box Shadow

Visually build CSS box-shadow with offset, blur, spread, colour, and inset controls. Stack up to ten layers, preview live on light, dark, or checker backdrops, copy as CSS or Tailwind v4. Runs entirely in your browser.

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LiveUtility

Palette Generator

Generate eight harmonious palettes (complementary, triadic, analogous, tetradic, square, split-complementary, monochromatic, tints & shades) from a base colour, or extract a six-colour palette from any photo using median-cut quantisation. Export to CSS variables, Tailwind v4, or JSON.

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LiveUtility

Cron Builder

Build cron expressions visually with per-field inputs and presets. Live human-readable description, next-five-runs preview, POSIX/Vixie crontab semantics — runs entirely in your browser.

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LiveUtility

SQL Formatter

Beautify or minify SQL for MySQL, PostgreSQL, SQLite, SQL Server, Oracle, BigQuery, and Snowflake. Dialect-aware parser, idempotent output, runs entirely in your browser — no uploads.

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LiveFinance

EMI Calculator

Calculate monthly EMI for any home, car, personal, or education loan. Standard reducing-balance formula, full year-by-year amortisation, ten currencies, cross-checked against the present-value identity.

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LiveFinance

Mortgage Calculator

Full mortgage calculator with principal, interest, taxes, insurance, and PMI. Year-by-year amortization, bi-weekly mode, and extra-payment savings. Seven currencies, runs in your browser, sources cited.

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LiveFinance

Compound Interest

Project the future value of a deposit with periodic contributions, any compounding frequency, and an inflation adjustment. Standard FV formula, period-by-period simulation cross-check, ten currencies.

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LiveFinance

Currency Converter

Convert between 60+ currencies at the live mid-market rate. USD-base cross-rate identity, round-trip verified, fetches refresh hourly with an embedded offline reference table. Free, no signup.

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LiveFinance

Salary Calculator

Convert any salary between hourly, daily, weekly, bi-weekly, semi-monthly, monthly, and annual pay. Multi-currency, optional take-home estimate, runs in your browser.

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LiveFinance

Income Tax (Global)

Estimate personal income tax in the US, UK, India, Australia, and Canada using each country's current published brackets. Single / individual filing status, federal where applicable, sources cited.

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LiveFinance

Investment Return

Project the future value of a monthly SIP, a one-time lump sum, or both side-by-side. Step-up SIP, inflation-adjusted view, and a verified closed-form FV — ten currencies, runs entirely in your browser.

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LiveFinance

Inflation Calculator

Convert any amount between two years using official CPI tables for the US, UK, India, and Sri Lanka. BLS, ONS, MoSPI, and CBSL data; cross-checked against a year-by-year CPI chain.

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LiveFinance

Profit Margin

Calculate gross margin, markup, net profit margin, and break-even units from cost and selling price. Four pricing tools in one — identity-verified, no signup, sources cited.

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LiveFinance

Break-Even Calc

Calculate break-even units and revenue from fixed costs, selling price, and variable cost per unit. Target profit, margin of safety, and a profit-at-volume table — two-method verified, currency-agnostic.

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LiveFinance

Tip Calculator

Calculate the tip, add tax, and split the bill across any number of people. Customary tip presets for 14 countries including Sri Lanka, US, UK, and Japan — instant, no signup, sources cited.

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LiveFinance

Invoice Generator

Build a professional invoice with line items, tax, discount, and shipping — then download a clean A4 PDF. Ten currencies, Sri Lanka VAT and SSCL presets, everything in your browser.

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LiveFreelance

Quotation Generator

Create a professional price quotation or estimate, then download a clean A4 PDF. Line items, discount, Sri Lanka VAT and SSCL, deposit, validity date, and an acceptance block — six currencies, all in your browser.

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LiveFinance

Net Worth

Calculate your net worth by entering every asset and liability across six categories each. Liquid net worth, debt-to-asset ratio, allocation breakdown, ten currencies — auto-saves to your browser, never uploaded.

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LiveFinance

Freelance Rate

Work out the hourly rate you need to charge as a freelancer. Enter your target income, weekly hours, time off, business expenses, tax rate, and profit margin — get an hourly, daily, and weekly rate that actually covers your costs.

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LiveUtility

BMI Calculator

Calculate your Body Mass Index in metric (kg/cm) or imperial (lb/ft) units. Switch between the WHO global scale and the Asian-adjusted thresholds, see your healthy weight range and how far you are from it — runs in your browser, no signup.

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LiveUtility

TDEE / Calorie Calculator

Calculate your Basal Metabolic Rate and Total Daily Energy Expenditure using Mifflin-St Jeor or Katch-McArdle. Pick an activity level and see four calorie targets — aggressive cut, moderate cut, maintenance, lean bulk — with macro splits, all in your browser, no signup.

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LiveUtility

Macro Calculator

Set a daily calorie target, pick a macro split — balanced, keto, high-protein, low-carb, IIFYM cut or bulk — and get daily grams of protein, carbohydrate, and fat. Atwater 4·4·9 factors, ISSN 2017 protein bands, runs entirely in your browser, no signup.

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LiveUtility

Water Intake

Calculate your daily water target from body weight, exercise minutes, climate, and pregnancy or breastfeeding status. Uses NASEM 2005 Adequate Intake, EFSA 2010 reference values, and the ACSM exercise replacement rate — runs in your browser, no signup.

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LiveUtility

Pregnancy Due Date

Estimate your due date from last menstrual period, conception date, or dating ultrasound. Naegele's rule with cycle adjustment, trimester progress, week-by-week milestones — ACOG-aligned, runs in your browser, no signup.

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LiveUtility

Age Calculator

Calculate your exact age in years, months, days, hours, and minutes. Includes Sri Lanka milestones: NIC eligibility at 16, voting age at 18, Grade 1 cut-off, driving licence age, and passport validity. Runs entirely in your browser, no signup.

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LiveUtility

Sleep Cycle Calculator

Find the best bedtime for your wake-up alarm, or the best wake times if you sleep now. Aligns with 90-minute REM cycles, accounts for sleep-onset latency, sources cited — runs in your browser, no signup.

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LiveUtility

Body Fat %

Estimate your body-fat percentage from neck, waist, and hip tape measurements using the original US Navy (Hodgdon & Beckett 1984) method. Metric and imperial, men and women, with lean body mass and ACE fitness bands — runs entirely in your browser, no signup.

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LiveUtility

Pace Calculator

Calculate running or walking pace from time and distance (min/km or min/mile), and predict 5K, 10K, half marathon, and marathon finish times with the Riegel formula. Free, no signup, sources cited — runs entirely in your browser.

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LiveUtility

1RM Calculator

Estimate your one-rep max (1RM) from a weight × reps set using four peer-reviewed strength formulas side by side, with a conservative training cap and a percent-of-1RM load table — runs in your browser, no signup, sources cited.

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LiveUtility

Timezone Converter

Convert any wall-clock time between two cities with full daylight-saving awareness. Curated list of 50+ IANA zones, offset and abbreviation labels, runs entirely in your browser — no signup, no network calls, sources cited.

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LiveUtility

World Clock

Pin up to 20 cities and watch their clocks tick side by side. Daylight-saving and historical offsets come from the IANA tz database via your browser's Intl API — no signup, no ads, no network calls.

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LiveUtility

Date Difference

Calculate the exact number of days, weeks, months, and years between any two dates, with an optional business-days-only mode. Leap-year accurate, DST-aware, runs entirely in your browser — no signup, sources cited.

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LiveUtility

Countdown Timer

Live countdown to any future date and event with a year/month/day/hour/minute/second breakdown. Add a title and share a link that reopens the same countdown on any device — runs entirely in your browser.

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LiveUtility

Pomodoro Timer

Free Pomodoro timer with the classic 25-minute focus + 5-minute break cycle and long break every four sessions. Customisable durations, two-tone audio chime, tab-title countdown — runs in your browser, no signup.

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LiveUtility

Stopwatch

Browser-based stopwatch with millisecond precision, unlimited lap recording, CSV export, and keyboard shortcuts. No signup, no ads — runs entirely in your browser.

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LiveUtility

Alarm Clock

Free browser-based alarm clock. Set multiple alarms with custom sounds, weekday repeats, snooze, and a tab-title countdown — runs entirely in your browser, no signup.

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LiveUtility

Meeting Planner

Find a meeting time that works across multiple time zones. 24-hour overlap grid scores each hour against everyone's working window — DST-aware, runs in your browser, no signup, sources cited.

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LiveUtility

Random Picker

Pick a random item from a list, a random number from a range, or a weighted choice. Crypto-fair (Web Crypto + rejection sampling), reproducible with a seed, χ² self-test built in. Runs entirely in your browser, no signup.

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LiveUtility

QR Code Generator

Generate QR codes for URLs, text, Wi-Fi, vCards, email, phone, or SMS. Customise colours, set error-correction level, add a centre logo. Encoded entirely in your browser, no signup, downloads as PNG or SVG.

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LiveUtility

Barcode Generator

Generate scannable 1-D barcodes in Code 128, EAN-13, UPC-A, ITF, Code 39, and Codabar formats. GS1 check digits calculated and verified for you. Download as PNG or SVG, encoded entirely in your browser.

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LiveUtility

Password Generator

Generate strong random passwords or memorable passphrases. Customise length, character sets, and ambiguous-character exclusion. Live entropy meter follows NIST SP 800-63B. Crypto-secure (Web Crypto), zero uploads.

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LiveDocuments

Resume Builder

Build a clean, ATS-friendly resume in five template styles. Live ATS score, autosaved in your browser, downloadable A4 PDF. No signup, no upload.

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LiveFinance

SL Electricity Bill Calculator

Estimate your CEB or LECO electricity bill from one input — units consumed — using the current PUCSL-approved tariff. Block-by-block breakdown for domestic, religious, GP-1, and hotel customers.

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LiveFinance

Appliance Power Cost

Work out the true marginal cost of running an AC, fridge, fan or any appliance on a CEB or LECO domestic connection. Accounts for Sri Lanka's retroactive slab tariff, so you see the real per-unit cost — not the misleading headline rate.

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LiveFinance

SL Water Bill

Calculate your monthly NWSDB water bill from your meter reading using the gazetted block-tariff schedule, with service and sewerage charges itemised.

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LiveUtility

SL Land Area Converter

Convert Sri Lankan land area between perches, square feet, square metres, roods, acres, hectares, square yards, and cents. Deed notation (a-r-p) supported, sources cited.

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LiveFinance

SL Revenue Licence Calc

Calculate the exact annual revenue licence fee for any Sri Lankan vehicle — car, three-wheeler, motorcycle, van, lorry or bus. Includes the 10%-per-quarter late surcharge and the mandatory emission test fee. Western Province schedule.

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LiveFinance

SL Gratuity Calculator

Calculate Sri Lanka gratuity payment under the Gratuity Act 1983 plus IRD terminal-benefits tax and net take-home. Covers both amount and tax. Free, no signup.

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LiveFinance

SL Gratuity Tax Calculator

Calculate exactly how much APIT tax applies to your Sri Lankan gratuity payment under IRD APIT Table 02. Enter gross gratuity + years of service — the first Rs 5M (or Rs 10M for 20+ years) is exempt. Free, no signup, sources cited.

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LiveFinance

SL Stamp Duty Calc

Calculate the stamp duty payable on deeds of transfer, lease agreements, mortgage bonds, promissory notes, hire-purchase agreements, affidavits, powers of attorney, and receipts in Sri Lanka. Uses the rates in the Stamp Duty (Special Provisions) Act and Gazette 1465/19, with the 4% Provincial Council rate on property transfers.

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LiveAI

AI Token Counter

Count tokens for any text against GPT-5, GPT-4o, Claude 4.x, Gemini 3, and Llama 4. See how much of each model's context window you'll use before sending. Runs entirely in your browser, no signup, sources cited.

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LiveAI

Sentiment Analyzer

Detect positive, negative, or neutral sentiment in any English text. DistilBERT-SST-2 runs server-side, AFINN-111 lexicon cross-check runs alongside. No signup, no model download, per-sentence breakdown, sources cited.

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LiveAI

Emotion Detector

Detect emotion in any English text — anger, anticipation, disgust, fear, joy, sadness, surprise, trust — with per-emotion intensity bars and a dominant-emotion verdict. NRC EmoLex runs deterministically, an emotion-DistilRoBERTa model layers on. No signup, no model download, sources cited.

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LiveAI

Text Summarizer

Summarize long articles, papers, or meeting notes into a TL;DR paragraph plus key bullet points. A DistilBART model runs server-side alongside a deterministic TextRank pass. No API key, no signup, sources cited.

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LiveAI

Language Detector

Detect the language of any text snippet — Sinhala, Tamil, Hindi, English, Chinese, and 100+ more. Unicode-script analysis plus a server-side tri-gram classifier. No API keys, no signup, sources cited.

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LiveAI

Prompt Formatter

Paste rough notes and get a well-structured AI prompt with role, task, constraints, and output format. Works with GPT, Claude, Gemini. Deterministic templating — runs entirely in your browser.

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LiveAI

AI Keyword Extractor

Extract the most important keywords and key phrases from any text. Runs YAKE (statistical) and RAKE (co-occurrence) side by side, entirely in your browser. No API key, no signup, sources cited.

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LiveAI

AI Entity Recognizer

Extract people, organisations, locations, and proper nouns from any English text. BERT NER runs server-side via Hugging Face — no signup, no model download, CSV and JSON export, sources cited.

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LiveAI

AI Alt-Text Generator

Drop an image and get a concise, WCAG-friendly alt-text string plus two longer caption variants. BLIP captioning runs server-side via the Hugging Face Inference API, with a built-in WebAIM linter and W3C role-aware guidance.

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LiveAI

AI Similarity Checker

Compare two texts and get a 0–100% semantic similarity score from sentence-transformer embeddings — catches paraphrases that word-overlap checkers miss. Server-side inference, lexical Jaccard cross-check, no signup, sources cited.

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LiveAI

AI Question Answering

Paste any English passage and ask a question — the tool returns the exact span that answers it, with a confidence score. DistilBERT-SQuAD inference runs server-side; a keyword baseline runs alongside as a cross-check. No signup, no API key.

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LiveAI

AI Grammar Checker

Paste any English paragraph and get a corrected version side-by-side with the original — each edit highlighted and labelled. LanguageTool engine server-side, deterministic rule baseline cross-check. No upload, no API key, no signup.

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LiveAI

AI Image Cost Calculator

Compare monthly cost of generating AI images across DALL-E 3, Imagen 3, Flux Pro, Stable Diffusion 3.5, Ideogram, and Recraft V3. Per-image and monthly totals in USD and LKR, every price sourced.

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LiveAI

AI Vision Token Calculator

Calculate how many tokens an image costs on GPT-4o, GPT-4o mini, Claude, and Gemini from its pixel dimensions — plus the per-image and total cost in USD and LKR, side by side. Runs entirely in your browser; the image is never uploaded.

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LiveAI

AI Audio Transcriber

Upload an audio or video file and get a timestamped transcript in 99 languages — including Sinhala and Tamil — using OpenAI Whisper on the Hugging Face Inference API. Export plain text, SRT subtitles, or VTT captions. No signup, no API key, no audio stored.

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LiveAI

Embedding Cost Calc

Estimate USD and LKR cost of generating vector embeddings across OpenAI, Cohere, Voyage AI, Google Gemini, and Mistral. One-time indexing, monthly queries, and first-year totals side-by-side with output dimensions — every price sourced.

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LiveAI

AI Resume ATS Checker

Paste a resume and a job description to see an ATS score, missing keywords, format issues parsers struggle with, and section gaps. Scoring follows Workday, Greenhouse, and Lever guidance plus Jobscan's 2024 threshold. Runs in your browser, no signup.

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LiveAI

AI Object Detector

Detect objects in any image with labelled bounding boxes — class names, confidence scores, and pixel coordinates. DETR and YOLOS transformers run server-side via the Hugging Face Inference API. COCO 80 classes, JSON + YOLO export, no signup.

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LiveAI

AI Translator

Translate English ↔ Sinhala, English ↔ Tamil, and 50+ other language pairs in your browser. Powered by Meta's NLLB-200 (no-language-left-behind) model via transformers.js — no signup, no upload, no character limits, sources cited.

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LiveAI

AI PII Redactor

Detect and redact PII — Sri Lanka NIC numbers, phones, emails, credit cards, IBANs, and IPs — from any pasted text. Regex + checksum validation, 100% client-side, no upload, no signup.

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LiveAI

AI TTS Cost Calculator

Compare AI text-to-speech costs in USD and LKR across OpenAI TTS, ElevenLabs, Google Cloud TTS, Azure Neural, Amazon Polly, Deepgram Aura, Cartesia Sonic, and PlayHT. Enter characters or audio minutes per month and a quality tier; the cheapest supported provider is highlighted, free-tier allowances applied, and ElevenLabs auto-upgrades to the cheapest plan that covers your volume.

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LiveAI

Transcription Cost Calc

Estimate what it costs to transcribe audio with the major speech-to-text APIs — OpenAI Whisper, Deepgram Nova, AssemblyAI Best and Nano, Google Cloud Speech-to-Text, and Azure AI Speech. Enter a duration and get a side-by-side per-provider comparison in USD and LKR, with each vendor's billing-rounding rule, free tier, effective cost per hour, and a monthly-to-annual projection.

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LiveAI

AI Zero-Shot Classifier

Classify any text into your own custom labels — no training data, no API key on your side, no signup. A distilled BART-MNLI NLI model runs server-side via Hugging Face using the entailment-NLI method. Single- and multi-label modes, sources cited.

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LiveFinance

Sri Lanka VAT Calculator

Add or remove 18% Value Added Tax from any LKR amount, with a clear base / VAT / total breakdown and a copy-ready invoice line. Defaults to Sri Lanka's current standard rate and supports the older 8%, 12%, and 15% rates for reconciling historical invoices.

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LiveAI

AI Prompt Library

48 structured, source-cited prompt templates for ChatGPT, Claude, Gemini, and Llama. Categories cover writing, coding, analysis, learning, marketing, and productivity. Filter, fill placeholders, copy in one click — no signup, no API call.

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LiveAI

AI Model Compare

Compare the latest LLMs side by side — GPT-5, Claude 4.5, Gemini 2.5, Llama 4, DeepSeek, Grok, Mistral. Context windows, input and output pricing, vision, function calling, training cutoff. Project monthly cost for your workload. Sources cited.

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LiveTravel

Airport Tax Calculator

Calculate Embarkation Levy + Passenger Service Charge for departures from Sri Lanka. Per-passenger breakdown, USD/LKR conversion, SAARC rates, exemptions, and AASL sources.

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LiveFinance

Annual Leave

Compute your statutory annual, casual, and medical leave entitlement in Sri Lanka under Shop & Office Employees Act § 6 — first-year quarter rule, proportionate casual accrual, remaining balance. Sources cited.

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LiveFinance

APIT Calculator

Free Sri Lanka APIT calculator using the IRD's official Table 01 for Y/A 2025/26. Monthly salary in, exact tax out, bracket-by-bracket breakdown, lump-sum (bonus) mode included. No signup, sources cited.

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LiveEducation

Aptitude Score

Compute your UGC aggregate mark from your A/L Z-score and aptitude test mark for Architecture, Design, IT, Fine Arts and Surveying Sciences. Free, sources cited.

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LiveFinance

Aswesuma Benefit

Estimate the monthly and lifetime Aswesuma payment your household qualifies for across all four tiers, with elderly, disabled, kidney and CKDu supplements. Sources cited.

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LiveUtility

Branch Code Finder

Look up the LankaPay branch code, SLIPS routing, and SWIFT BIC for any Sri Lankan bank branch. Reverse-decode any code back to its bank, branch, district and province. Free, no signup.

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Bank Transfer Fee

Find the cheapest rail and exact fee for any interbank transfer in Sri Lanka. Compares CEFTS, SLIPS, and RTGS across BoC, People's, Commercial, HNB, Sampath, NDB, NSB, DFCC, and NTB. Free, sources cited.

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Birth Certificate Fee

Work out the exact rupee cost of a Sri Lankan birth certificate — certified copies, search fee, late-registration penalty, one-day service, and amendments. Sources cited.

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LiveHealth

Blood Donation Check

Find out instantly whether you can donate blood in Sri Lanka. Free NBTS-aligned eligibility checker covering age, weight, hemoglobin, inter-donation interval, tattoos, vaccines and travel.

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Bonus Tax

Work out the APIT your employer must withhold from a bonus, commission, or arrears in Sri Lanka. Uses IRD Table 02 for Y/A 2025/26. Free, no signup, sources cited.

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Building Approval Fee

Estimate UDA, Municipal Council, Urban Council, or Pradeshiya Sabha building approval fees in Sri Lanka — application, planning, scrutiny, CoC and NBRO surcharge, all from the 2021 UDA gazette.

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Bus Fare

Estimate the legal NTC bus fare for any route in Sri Lanka by distance and class — Normal, Semi-Luxury, Luxury, Super-Luxury, Highway Express AC. Gazette cited.

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Capital Allowance

Calculate annual capital (depreciation) allowance and balancing charges for any business asset under Sri Lanka's Inland Revenue Act 2017, Third Schedule. Free, IRD-cited, no signup.

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Capital Gains Tax

Compute Sri Lankan capital gains tax on land, buildings, unlisted shares, partnership interests. 10% flat rate, 30-Sep-2017 step-up, PPR exemption, IRD sources cited.

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LiveHealth

Child Growth Chart

Calculate WHO Z-scores and percentiles for weight-for-age, height-for-age, weight-for-height, and BMI-for-age. Matches the CHDR card your PHM uses. Free, private, no signup.

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LiveHealth

Vaccination Schedule

Generate your child's personalised Sri Lanka EPI vaccination schedule from date of birth — BCG to aTd, with exact due dates, overdue alerts, and a printable summary. Free, no signup, sources cited.

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LiveFinance

Company Reg Fee

Estimate the total Department of Registrar of Companies fees to incorporate a Pvt Ltd, PLC, or branch in Sri Lanka. Itemised, sources cited, no signup.

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LiveFinance

Corporate Tax

Compute corporate income tax for a Sri Lankan company at the IRD's Y/A 2025/26 rates — 30% standard, 15% SME, 18% manufacturing, 40% liquor/tobacco — with quarterly self-assessment dates. Sources cited.

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LiveFinance

Credit Card Interest

Find your finance charge, minimum payment, and months-to-clear on any Sri Lankan credit card. CBSL average-daily-balance method, 36% cap guard, no signup, sources cited.

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CSE Brokerage

Calculate the total cost of a Colombo Stock Exchange share trade — brokerage, CSE fee, CDS fee, SEC cess, and Share Transaction Levy — with a per-leg breakdown and break-even sell price.

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LiveTravel

Cultural Triangle Fee

Work out the gate cost for Sigiriya, Polonnaruwa, Anuradhapura, Dambulla and the rest of Sri Lanka's CCF heritage sites. Compares per-site total against the Cultural Triangle Round Ticket and picks the cheaper option. Sources cited.

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LiveTravel

Baggage Allowance

Find your duty-free concession at Bandaranaike International Airport and estimate the customs duty, VAT, PAL and CESS on excess baggage. Gold, foreign currency and electronics limits — all in one place, sources cited, no signup.

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Death Certificate Fee

Work out the exact rupee cost of a Sri Lankan death certificate — registration, certified copies, search, MFA Apostille, sworn translation, and EMS courier. Sources cited.

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LiveFinance

Digital Services VAT

Compute the 18% Sri Lankan VAT on Netflix, Spotify, AWS, Adobe, Google Ads, and other non-resident digital invoices. Converts USD/EUR/GBP to LKR, splits net + VAT + total, and explains B2C vs reverse charge.

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LiveUtility

DS Division Finder

Find any Divisional Secretariat in Sri Lanka by province and district, or search all 331 DS divisions by name in English, Sinhala, or Tamil. Census 2012 data, sources cited.

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Licence Eligibility

Find out which of Sri Lanka's 13 driving licence classes you can apply for — based on your age, classes already held, holding-period rules and NTMI medical. DMT rules cited.

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Driving Licence Fee

Calculate the full DMT driving licence fee in Sri Lanka — issue, trial, NTMI medical, foreign-conversion, duplicate, and add-a-class. Itemised, sources cited, no signup.

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Licence Validity

Find the exact expiry date of your Sri Lankan driving licence by class, issue date, and age — with renewal-window and Form D medical-certificate flags. Free, no signup, DMT sources cited.

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Dual Citizenship Fee

Estimate the full Sri Lankan dual citizenship application cost in LKR and USD — principal, spouse, children, replacement, cancellation — using the Immigration Department fee schedule.

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Electricity Connection Fee

Work out the full rupee cost of a new CEB or LECO electricity connection — application fee, capacity charge, service-line extension, refundable meter deposit, and stamp duty. Free, no signup, sources cited.

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LiveEducation

English Exam Fee

Compare 2026 LKR fees for IELTS, TOEFL iBT, PTE Academic, Duolingo English Test, and Cambridge in Sri Lanka. Filter by purpose (study abroad, UK visa, Canada PR) and rank by price.

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LiveFinance

EPF/ETF Surcharge

Compute the EPF Act §38(1) and ETF Act §13 late-payment surcharge on aggregate Sri Lankan payrolls in seconds. Sources cited, statutory bands, due-date rollback included.

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LiveFinance

EPF Housing Loan

Find how much you can withdraw from your EPF balance for housing — purchase, build, renovate, or repay a mortgage. CBSL housing scheme rules, eligibility, and document checklist.

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EPF Withdrawal Tax

Check if you can withdraw your EPF in Sri Lanka and estimate the tax withheld on the lump sum. Covers retirement age, female 50+, marriage, migration, disability, and death claims — sources cited.

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ETA Visa Fee

Work out the exact Sri Lanka ETA visa cost in USD and LKR — tourist, business, transit — broken down into government fee, gateway fee, on-arrival surcharge. Sources cited.

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ETF Calculator

Project your Employees' Trust Fund (ETF) balance at resignation, retirement, or migration using the statutory 3% employer rate and the ETFB's interest. Free, sources cited.

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LiveTravel

EV Charging Cost

Work out the monthly LKR cost of charging an EV at home in Sri Lanka on the CEB D-1 or D-TOU tariff, and compare it against petrol/diesel at today's CPC price.

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Exam Fees

Work out the official Department of Examinations fee for O/L and A/L re-correction, certified copies, duplicate result sheets, and overseas authentication — sourced from the latest DoE circulars.

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LiveFinance

Excise Duty

Work out the Excise Duty + 18% VAT + 2.5% SSCL on a cigarette pack or liquor bottle in Sri Lanka. Per-stick / per-LAA rates from the Excise Department, sources cited.

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LiveTravel

Expressway Toll

Calculate the exact RDA-gazetted toll for any trip on Sri Lanka's expressway network — Southern (E01), Outer Circular (E02), Central Phase 1 (E04) and the Port Access Elevated Highway. Per vehicle class, with round-trip totals. Sources cited.

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LiveFinance

FAR Calculator

Find the legal max floor area, plot coverage, and number of storeys for any land plot in a UDA zone in Sri Lanka. Free, no signup, sources cited.

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Fuel Cost

Calculate the petrol or diesel cost of any trip in Sri Lanka using the latest Ceylon Petroleum Corporation retail prices. Free, no signup, sources cited.

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Government Pension

Estimate your Sri Lankan public service monthly pension from pensionable salary and years of service. Uses the official (salary × months) ÷ 480 formula, with the 90% cap and W&OP/W&OOP summary. Free, sources cited.

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LiveEducation

Grade 1 Age Check

Enter your child's date of birth and instantly see which year they're eligible for Grade 1 in a Sri Lankan government school under the Ministry of Education's 5-year / 31 January rule. No signup, sources cited.

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LiveEducation

Admission Marks

Estimate the marks your Grade 1 government school application will score under the Ministry of Education circular. All five admission categories, with breakdown and document checklist.

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LiveFinance

Holiday Pay

Calculate the statutory holiday pay due to a Sri Lankan worker who worked on a public, bank, poya, mercantile, or rest-day holiday — under the Shop & Office Employees Act and Wages Boards Ordinance. Free, no signup, sources cited.

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Hotel Bill Tax

Break down a Sri Lankan hotel invoice into Service Charge, Tourism Development Levy, SSCL and VAT in seconds. Reverse-derive the base from any final amount. Sources cited.

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Construction Material

Estimate cement bags, sand, metal, bricks, blocks, TMT steel and roof material for a Sri Lankan house using CIDA & ICTAD residential consumption rates. Free, no signup, sources cited.

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LiveFinance

Inflation Calculator

Convert any past LKR amount into today's money using the official Colombo Consumer Price Index. Year-by-year purchasing power, real-return FD check, sources cited.

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Land Registration Fee

Itemise the exact rupee cost to register a land deed at the Sri Lanka Land Registry — registration fee, folio, search, title plan, certified copies. Stamp duty separated out.

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Leave Encashment

Calculate the cash value of unused annual leave at retirement, resignation, or year-end carry-forward in Sri Lanka. Public-sector 84-day cap and Shop & Office Act formulas — sources cited.

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Liquor Licence Fee

Calculate the annual licence fee, renewal cost, and late-renewal surcharge for every Sri Lanka Excise Department liquor licence — FL/1 hotel, FL/3 tavern, FL/16 beer, FL/22 wholesale and more. Sources cited.

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Lottery Tax

Work out your take-home from any Sri Lankan DLB or NLB lottery prize after the 14% WHT on shares above Rs 500,000. Inland Revenue Act citations, no signup.

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LiveUtility

LP Gas Price

Look up the current CAA max retail price for Litro and Laugfs LP gas cylinders in Sri Lanka, compare cost-per-kg across sizes, and estimate your monthly cooking-gas cost.

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LiveEducation

Mahapola Scholarship

Check Mahapola Merit and Bursary eligibility, the current monthly stipend, and total payout across your degree. Free, no signup, mahapola.lk and UGC sources cited.

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Marriage Reg Fee

Add up the exact rupee cost to legally register your marriage in Sri Lanka — General, Kandyan, or Muslim register, in-office or hotel, with special licence and copies.

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Maternity Leave

Work out exactly how many paid working days of maternity leave you are entitled to in Sri Lanka, your daily wage, total leave pay, and return-to-work date. Sources cited.

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Medicine Price

Look up the legal Maximum Retail Price (MRP) of essential medicines in Sri Lanka. Type a brand (Panadol, Cozaar) or generic (paracetamol, losartan) and see the gazetted NMRA ceiling.

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LiveFinance

Minimum Wage

Check whether your pay meets Sri Lanka's legal minimum wage. Covers the national minimum and trade-specific Wages Boards (garments, plantations, hotels, building, bakery). Free, sources cited.

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Phone Import Tax

Estimate the all-in landed cost of importing a phone to Sri Lanka — Customs Duty, Cess, PAL, VAT, SSCL and TRCSL MDRS IMEI fee. Free, sources cited.

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Laptop Import Tax

Estimate the total import tax and landed cost of bringing a laptop into Sri Lanka — PAL, VAT and SSCL on the CIF value (laptops clear at 0% duty and 0% Cess), with the duty-free baggage rule. Free, sources cited.

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Reload Tax

Find out exactly how much of your Dialog, Mobitel, Hutch, or Airtel reload becomes airtime versus tax. Telecommunication Levy + VAT breakdown, with a reverse mode for any target airtime.

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LiveFinance

Insurance Premium

Calculate the IRCSL statutory minimum third-party motor insurance premium for any Sri Lankan vehicle — car, three-wheeler, motorcycle, lorry or bus. Stamp duty included. Free, no signup, sources cited.

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National Park Fee

Work out the all-in gate cost for Sri Lanka's national parks — per-person, vehicle, service, tracker and VAT — for Sri Lankan, SAARC and other foreign visitors. Sources cited.

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LiveFinance

Net to Gross Salary

Find the gross monthly salary you need to take home a target net in Sri Lanka — reverses APIT (PAYE) and 8% EPF using the IRD's Y/A 2025/26 brackets. Free, sources cited.

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LiveFinance

NIC Fee

Find the exact rupee cost of any Sri Lankan NIC service — first NIC, lost or damaged replacement, smart NIC upgrade, name or address change — with documents to carry and where to apply.

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LiveFinance

NRFC Deposit

Calculate maturity, interest, and LKR-equivalent value of a Sri Lankan NRFC, RFC, or BFCA foreign currency fixed deposit. Free, no signup, CBSL and IRD sources cited.

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LiveUtility

Number to Words

Free converter that spells any LKR amount in English, Sinhala, and Tamil — exact cheque format with "Rupees X and Cents Y Only", lakh/crore or million/billion. Sources cited.

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LiveEducation

NVQ Level Lookup

Find your NVQ level, its academic equivalent (O/L, A/L, Diploma, Degree), the jobs it qualifies you for, and next-step pathways in Sri Lanka's TVEC NVQ framework. Free, no signup, sources cited.

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LiveEducation

O/L Pass Check

Enter your nine GCE O/L grades and instantly see whether you passed O/L, qualified for A/L, and how many credits and distinctions you earned. Sources cited.

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LiveUtility

Remittance Limit

How much can a Sri Lankan resident send abroad? Check the AD cap, CBSL approval gate, LKR cost (stamp duty + bank fees + FEL), and required Form A documents by purpose.

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Overtime Pay

Calculate the legally-correct overtime pay you are owed in Sri Lanka under the Shop & Office Employees Act. Hourly rate, weekday + rest-day + holiday OT, total monthly gross — sources cited.

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Parcel Import Duty

Estimate Sri Lanka Customs Duty, Cess, PAL, Surcharge, VAT and SSCL on parcels from Amazon, AliExpress, eBay, Temu or any overseas retailer. Free, sources cited.

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Passport Fee

Add up the exact rupee cost for a Sri Lankan passport — Normal or One-Day service, adult or child, replacement or alteration — line-by-line, sources cited.

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Pawning Calculator

Calculate the maximum pawning advance, total interest, and repayment due at BoC, People's Bank, NSB, HNB, Commercial, and Sampath — by weight, carat, LTV, and tenure. Sources cited.

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LiveFinance

Pension Commutation

Calculate your commuted lump sum, reduced monthly pension and full-pension restoration date under the Sri Lanka public service pension scheme. Free, no signup, sources cited.

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PCC Fee

Calculate the total LKR cost of a Sri Lanka Police Clearance Certificate — Police HQ fee, MFA Apostille or legalisation, certified translation, courier and express — itemised, sources cited.

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LiveUtility

Postal Code Finder

Free Sri Lanka postal code finder. Look up the 5-digit ZIP for any city, suburb, or post office — or decode a code into its post office, district and province. Data from Sri Lanka Post.

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Post Rate

Work out exactly what Sri Lanka Post will charge for any letter, parcel, registered item or EMS Speed Post — inland or international, sources cited line by line.

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Property Rates

Calculate quarterly and annual property rates payable to any Sri Lankan local authority. Includes the 31-January discount, early-quarter discount, and warrant surcharge. Free, no signup, ordinances cited.

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LiveUtility

Public Holidays

Every gazetted Sri Lanka public, bank and mercantile holiday for 2026 with English, Sinhala and Tamil names, live countdown to the next holiday, filters, and one-click .ics download.

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Property Loan

Estimate your maximum government property loan, monthly instalment, and full amortisation under Public Administration Circular 03/2025. Free, no signup, sources cited.

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Quarterly Tax

Calculate the four quarterly self-assessment income tax installments owed to the Sri Lanka IRD for Y/A 2025/26, with statutory due dates and late-payment interest estimate. Free, sources cited.

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Recurring Deposit

Project the maturity value, interest, and post-WHT net payout of a Sri Lankan bank Recurring Deposit. Standard annuity formula, 5% WHT, senior-citizen exemption. Free, no signup.

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Rental Tax

Work out the personal income tax on rental income in Sri Lanka — applies the IRD 25% deemed repair allowance and Y/A 2025/26 PIT slabs. Free, no signup, sources cited.

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School Calendar

Official Ministry of Education 2026 school term dates for Sri Lankan government schools. Count school days, see public-holiday closures, and download a .ics calendar — free, no signup.

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Senior Citizen FD

Calculate the 15% Senior Citizens' Special Deposit Scheme payout for any deposit, bank, and tenor — with WHT, monthly cash flow, and a market-FD comparison. Free, no signup, sources cited.

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LiveUtility

Nekath 2026

Government Astrologer's nekath times for Sri Lanka's 2026 Aluth Avurudda / Puthandu: dawn, hearth lighting, first meal, anointing, departure for work — with colours, directions and a one-click calendar export.

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SLBFE Fee

Calculate the total Rs you pay the SLBFE before going abroad — registration, insurance, welfare fund, and housemaid training, itemised by destination and contract length.

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Solar Net Metering

Estimate solar payback for rooftop PV in Sri Lanka under all three CEB/PUCSL schemes. Side-by-side Net Metering vs Net Accounting vs Net Plus, 20-year cash flow, free, sources cited.

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SSCL Calculator

Calculate SSCL at 2.5% on your quarterly or annual turnover. Applies Schedule II deemed-liable percentages by activity class and checks the Rs 15M / Rs 60M registration threshold. Sources cited.

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Tax Penalty

Estimate IRD late-payment interest, default penalty, and late-filing penalty for income tax, VAT, WHT, APIT and SSCL in Sri Lanka. Cites IRA s.159, s.178, s.179. Free, no signup.

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Tax Residency

Find out if you are tax resident in Sri Lanka for any year of assessment under section 69 of the Inland Revenue Act. Counts trips, the 183-day rule, and the rolling 12-month window. Free, no signup, sources cited.

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TEWA Compensation

Calculate the statutory termination compensation owed to a Sri Lankan workman under the TEWA Act No. 45 of 1971 — gazetted band schedule, month and ceiling limits, eligibility checks, sources cited.

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Tuk-Tuk Fare

Calculate the gazetted legal maximum three-wheeler fare in Sri Lanka — flag-down, per-km, waiting time, optional night surcharge — with a per-km sanity check for any quote.

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Trademark Fee

Estimate the total NIPO government fee to register a trademark in Sri Lanka — by Nice class, local vs foreign tier, with renewal cost. Sources cited, no signup.

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Traffic Fines

Look up the Sri Lanka spot fine for any traffic offence — licence, insurance, helmet, seatbelt, mobile phone, speeding. Sourced from the 2022 gazette, with Motor Traffic Act citations.

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Train Fare

Calculate the exact Sri Lanka Railways train fare for any route, class, and train type. Includes Observation Saloon and Sleeperette surcharges, return-trip totals, child concessions. Sources cited.

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T-Bill Calculator

Calculate the yield, interest, and after-tax return on a Sri Lankan 91 / 182 / 364-day Treasury Bill using CBSL discount-pricing conventions. Free, no signup, sources cited.

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Treasury Bond

Compute Yield to Maturity, accrued interest, dirty price and the full semi-annual cashflow schedule for any Sri Lankan Government Treasury Bond. CBSL conventions, free, no signup, sources cited.

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LiveEducation

University Cutoff

Enter your A/L Z-score, stream and district to see which Sri Lankan state-university courses you would have cleared. UGC Admissions Handbook cut-offs, district + EDD quotas, sources cited.

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VAT Threshold

Find out instantly whether your Sri Lankan business must register for VAT. Tests both the quarterly and annual statutory limits.

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Emission Test Fee

Find the exact VET fee for your vehicle class — motorcycle, car, van, lorry, bus, or prime mover. Retest rules, EV exemption, certificate validity, sources cited.

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Vehicle Reg Fee

Calculate the DMT first-registration fee, number plate, smart-card CR, and late-registration penalty for any motor vehicle, motorcycle, three-wheeler, lorry, bus, or trailer in Sri Lanka. Free, no signup, gazette cited.

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Vehicle Import Tax

Estimate the landed cost of importing a car, SUV or van to Sri Lanka. Customs Duty, Excise, PAL, SSCL and VAT broken down line by line for petrol, diesel, hybrid and electric vehicles. Sources cited, no signup.

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Vehicle Leasing

Calculate the monthly rental, total interest, and full amortisation on a Sri Lankan vehicle finance lease. Inputs advance, term, residual, and fees, with the CBSL maximum-rate ceiling check.

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Number Plate Decoder

Decode any Sri Lankan number plate into its province, vehicle class (car, van, three-wheeler, bus, lorry), and approximate registration era — using the Department of Motor Traffic's published format spec. Free, instant, runs in your browser.

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LiveTravel

Transfer Fee

Work out the exact DMT bill when buying a used car, motorbike, tuk or lorry in Sri Lanka — class fee, service charge, 1% stamp duty and the 14-day late penalty, line by line. Sources cited, no signup.

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LiveTravel

Visa Extension Fee

Estimate the USD and LKR cost of extending a Sri Lankan tourist, business or residence visa — itemised from the Department of Immigration's official fee schedule.

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LiveTravel

Visa-Free Finder

Look up every country a Sri Lankan ordinary passport holder can enter visa-free, on visa-on-arrival, eVisa, or eTA — with fees, allowed stay, and the official immigration source for each.

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LiveFinance

Water Connection Fee

Estimate the one-time NWSDB new water connection cost in Sri Lanka — service deposit, connection fee, meter cost, pipe and road-crossing surcharge — itemised by category and meter size.

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LiveFinance

W&OP Pension

Estimate the monthly survivor pension a widow or dependent child of a deceased Sri Lankan public officer is entitled to under W&OP-I, W&OP-II, and PSPS-W&OP. Free, no signup, sources cited.

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LiveFinance

Workmen's Compensation

Calculate statutory workmen's compensation under the Sri Lanka Workmen's Compensation Ordinance — death, permanent total, permanent partial (Schedule II), and temporary disablement, with statutory ceilings applied automatically.

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LiveDeveloper

Python Compiler

Write and run Python 3 online, free, no signup. Real CPython via WebAssembly runs entirely in your browser — your code is never uploaded.

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LiveDeveloper

JavaScript Playground

Write and run JavaScript online, free, no signup. Code runs in a sandboxed worker in your own browser with live console output.

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LiveDeveloper

TypeScript Playground

Write, compile and run TypeScript online, free. The TypeScript compiler runs in your browser and executes the result in a sandboxed worker.

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LiveDeveloper

SQL Editor

Practise SQL with a real SQLite database that runs entirely in your browser — free, no signup, nothing uploaded. CREATE, INSERT, SELECT, JOIN.

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LiveDeveloper

Java Compiler

Write, compile and run Java online for free, no signup. Code is compiled on a sandboxed server — never on ours. Great for students and quick tests.

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LiveDeveloper

C++ Compiler

Write, compile and run C++ online for free, no signup. Compiled on a sandboxed server (GCC), not on ours. Perfect for learning and quick tests.

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LiveDeveloper

C Compiler

Write, compile and run C online for free, no signup. Compiled on a sandboxed server (GCC), never on ours. Ideal for students learning C.

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LiveDeveloper

C# Compiler

Write, compile and run C# online for free, no signup. Compiled on a sandboxed server, never on ours. Quick C# testing from any device.

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LiveDeveloper

Go Compiler

Write, compile and run Go (Golang) online for free, no signup. Compiled on a sandboxed server, never on ours. Great for trying Go fast.

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LiveDeveloper

Rust Compiler

Write, compile and run Rust online for free, no signup. Compiled on a sandboxed server, never on ours. Try Rust with zero setup.

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LiveDeveloper

Ruby Compiler

Write and run Ruby online for free, no signup. Executed on a sandboxed server, never on ours. Quick Ruby testing from any device.

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LiveDeveloper

PHP Compiler

Write and run PHP online for free, no signup. Executed on a sandboxed server, never on ours. Test PHP snippets instantly from any device.

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LiveUtility

Secret Chat

Create an end-to-end encrypted chat, share the link, and message privately with media. Nothing readable is stored and the chat self-destructs on a timer. No signup.

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LiveUtility

One-Time Secret

Paste a password, API key, or private note and get a self-destructing one-time link. End-to-end encrypted in your browser; our server never sees it. A free Privnote alternative — no signup.

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LiveUtility

Send Secret File

Upload a file up to 3 MB and get a one-time link. The file is encrypted in your browser before upload, destroyed after one download or when the timer expires. A free, no-signup alternative to WeTransfer for sending one private file.

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LiveTravel

Trip Planner

Hand-curated Sri Lanka itineraries with day-by-day stops, interactive maps, real budget ranges, and local tips. Kandy, Galle, Ella and more — no signup, no app.

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LiveImage

EXIF Metadata Editor

Edit the EXIF metadata of a photo — title, author, copyright, date taken, camera, and GPS location — then download an edited copy. Or strip every tag in one click. Runs fully in your browser, nothing uploaded. Free, no signup.

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LiveImage

EXIF Metadata Viewer

View all EXIF and metadata of any photo or video — camera, exposure, capture date, and GPS location — entirely in your browser. Nothing is uploaded. Free, no signup.

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LiveTravel

SL Number Plate Year Checker

Estimate a Sri Lankan vehicle's registration year, province, and class from its number plate — covering the current 3-letter (CAB-1234), older province (WP GA-5678), and numeric series. Sources cited.

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LiveAI

LLM VRAM Calculator

Estimate the GPU VRAM needed to run or fine-tune any open LLM (Llama 3, Mistral, Qwen, Gemma, DeepSeek) at a given precision, context, and batch size — and check whether it fits your GPU. Formulas cited, runs in your browser.

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LiveAI

AI Inference Speed Calculator

Estimate how fast an LLM will run on a given GPU — decode tokens/second, prefill throughput, time-to-first-token, and total generation time — from model size, quantization, and published memory bandwidth. Formulas and GPU specs cited.

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LiveAI

AI GPU Comparison

Compare the NVIDIA GPUs people use to run and fine-tune LLMs (RTX 3060/3090/4090/5090, L40S, RTX 6000 Ada, A100, H100, H200) on VRAM, bandwidth, FP16 TFLOPS, power and price. Pick a model + quantization to see which card fits and the best value buy. Specs cited.

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LiveAI

AI Video Cost Calculator

Compare the cost of generating AI video across Sora 2, Veo 3, Runway Gen-4, Kling, Luma, and Pika — per-second, per-clip, and monthly totals in USD and LKR, every price sourced.

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LiveAI

AI Avatar Video Cost

Compare the cost of AI avatar / talking-head videos across Synthesia, HeyGen, D-ID, Colossyan, and Hedra — normalised to an effective cost per minute, with monthly totals in USD and LKR and an optional 18% VAT line.

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LiveAI

GPU Cloud Cost Calculator

Estimate what it costs to rent cloud GPUs (RTX 4090, A100, H100, B200) to train or serve an AI model, and compare the same job across RunPod, Lambda, Vast.ai, and AWS — on-demand and spot — in USD and LKR.

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LiveAI

Fine-Tuning Cost Calculator

Estimate the one-time training cost and ongoing monthly inference cost of fine-tuning an LLM (GPT-4o, GPT-4o mini, GPT-3.5 Turbo, Together AI Llama) from your token count, epochs, and usage — in USD and LKR.

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LiveAI

AI Subscription Cost

Add up what you pay for ChatGPT, Claude, Gemini, Perplexity, Copilot, Cursor, Midjourney and Grok subscriptions across monthly and annual billing, converted to Sri Lankan rupees with an optional 18% VAT line.

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LiveAI

AI Chatbot Cost Calculator

Estimate the monthly API cost of a multi-turn AI chatbot across Claude, GPT, and Gemini. Models the quadratic context re-sending that single-call calculators miss, with and without prompt caching, in USD and LKR.

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LiveAI

AI Agent Cost Calculator

Estimate the real per-run, daily, and monthly cost of a multi-step LLM agent across Claude, GPT, and Gemini. Models the context accumulation single-call calculators miss — each tool result is re-sent every step — with caching, in USD and LKR.

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LiveAI

AI Rate Limit Calculator

Computes whether an LLM workload will hit OpenAI, Anthropic, or Gemini rate limits — effective max requests/min, which limit binds (RPM vs TPM/ITPM/OTPM/RPD), and batch wall-clock time.

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LiveText

Readability Checker

Paste any text and score its readability with six standard formulas — Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, SMOG, Coleman-Liau, and ARI — plus the target school grade and the word, sentence, and syllable stats behind every number. Runs entirely in your browser.

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LiveAI

AI Translation Cost Calc

Estimate and compare the USD and LKR cost of machine-translating text across Google, DeepL, Amazon, Azure, and GPT-4o mini, with free tiers applied.

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LiveAI

Tokens to Words

Convert tokens to words, words to tokens, and characters for GPT, Claude, Gemini and Llama. See reading time, A4 pages, context-window use, and an approximate API cost in USD and LKR.

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LiveAI

Prompt Caching Calculator

Calculate how much prompt caching saves on your LLM API bill. Compare cost with vs without caching, the dollar savings, and the break-even point for Claude, OpenAI, and Gemini using each provider's official cache-write and cache-read multipliers.

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LiveAI

AI Carbon Calculator

Estimate the electricity, CO₂e, and water footprint of your ChatGPT, Gemini, or other AI chatbot usage. Enter prompts per day and your country's grid to see energy, carbon, and relatable equivalents — every figure traced to a published source.

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LiveAI

Paraphrasing Tool

Reword English text in four modes with a seq2seq paraphrase model, plus a deterministic word-overlap and change-metrics cross-check — free, no signup, sources cited.

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LiveAI

Vector DB Storage Calc

Calculate disk, RAM, and monthly managed-hosting cost for vector embeddings across Pinecone, Qdrant, Weaviate, and self-hosted pgvector — with float32, int8, and binary quantization comparisons. Verified against Qdrant's 1.5× capacity rule.

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LiveText

Sinhala Unicode Converter

Convert Sinhala text between legacy fonts (FM-Abhaya family) and proper Sinhala Unicode, both directions, entirely in your browser. Turn old font-encoded gibberish into copy-paste-ready Unicode for Facebook, WhatsApp, and government eServices.

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LiveAI

Batch API Cost Calc

Estimate the 50% savings from running large OpenAI, Claude, and Gemini jobs through the asynchronous Batch API instead of standard synchronous calls. Compare standard vs batch cost in USD and LKR, with per-token math cited to each provider's docs.

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LiveAI

Reasoning Token Cost Calc

Estimate the true cost of reasoning-model API calls by accounting for the hidden reasoning/thinking tokens that o-series, Claude, and Gemini bill at output rates. See per-call and monthly cost in USD and LKR, plus how much more it is than a naive estimate.

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LiveAI

AI Image Size Calculator

Find the exact, model-valid output dimensions for any AI image model — SDXL, DALL·E 3, GPT-Image-1, SD 1.5/3.5, Flux.1, Midjourney — snapped to its documented resolution grid and megapixel limit. Runs entirely in your browser.

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LiveAI

AI Text Chunker

Split long text into token-sized, optionally overlapping chunks for RAG and embedding pipelines. Runs OpenAI's tiktoken counter in your browser, shows each chunk's exact token count, and exports JSON or JSONL. No upload, no signup.

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LiveAI

AI Image Detector

Check whether an image is AI-generated by reading its provenance metadata — C2PA Content Credentials, IPTC DigitalSourceType, and known generator signatures (Firefly, DALL·E, Midjourney, Stable Diffusion). Runs entirely in your browser; the image never leaves your device.

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LiveAI

Confusion Matrix Calculator

Enter the four cells of a binary confusion matrix (TP, FP, FN, TN) and instantly get accuracy, precision, recall, specificity, F1, F-beta, balanced accuracy and the Matthews correlation coefficient — each shown with its exact formula. Runs in your browser, no signup.

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LiveAI

Realtime Voice API Cost

Estimate the per-session, monthly and annual cost of a speech-to-speech voice agent on the OpenAI Realtime API or Gemini Live API. Models all four billed token classes — audio in, cached audio, audio out and text — in USD and LKR. Runs in your browser, no signup.

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LiveEducation

IELTS Band Score Calculator

Calculate your IELTS overall band from the four section scores using the official averaging-and-rounding rule, with the exact maths shown. Optional indicative raw-score (out of 40) conversion for Listening and Reading, Academic and General Training.

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LiveUtility

Unit Converter

Convert between length, mass, temperature, area, volume, speed, time, and digital-storage units using exact SI/NIST factors, with Sri Lankan land units (perch, rood, acre) built in — free, in-browser, no signup.

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LiveFreelance

SL Freelancer Tax Calculator

Calculate the income tax a Sri Lankan freelancer or remote worker owes on foreign-currency earnings under the concessionary 15%-capped 2025/26 structure, with bracket breakdown, take-home, and bank-vs-offshore comparison.

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LiveEducation

SL Degree Class Predictor

Map your cumulative GPA or average to a Sri Lankan honours class — First, Second Upper, Second Lower or General — and find the average you need over remaining credits to climb a class.

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LiveAI

AI Image Prompt Gen

Build copy-ready image-generation prompts for Midjourney, Stable Diffusion (SDXL), and DALL·E 3 from guided fields — correct --ar/--stylize syntax, weighted terms, and a separate negative-prompt block. Runs in your browser, no signup.

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LiveFinance

Zakat Calculator

Work out your Zakat in Sri Lankan rupees on cash, gold, silver, business stock and receivables at the fixed 2.5% rate, after checking your wealth against the silver or gold nisab. Runs entirely in your browser, assumptions stated and cited.

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LiveFreelance

Freelance Fee Calculator

See exactly what you keep after platform fees on Fiverr, Upwork, Freelancer.com and Guru. Enter an order amount and compare net take-home side by side, with an optional LKR figure for Sri Lankan freelancers.

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LiveDeveloper

Unix Timestamp Converter

Convert Unix epoch time (seconds, ms, µs, ns) to a human-readable date in UTC, Sri Lanka, and local time — and back — with relative time, ISO-week facts, and the Year-2038 boundary, all in the browser.

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LiveDeveloper

IP Subnet Calculator

Enter an IPv4 address and CIDR prefix to get the network, broadcast, usable host range, subnet mask, wildcard, IP class and address type — and split a block into equal subnets. Pure bit math, all in the browser.

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LiveDeveloper

Contrast Checker

Check the contrast ratio between a text color and background against WCAG 2.1 AA and AAA. Instant pass/fail for normal, large, and UI text, a live preview, and one-click nudge-to-pass fixes — all in your browser.

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LiveUtility

Number Base Converter

Convert a whole number between any two bases from 2 to 36 — binary, octal, decimal and hex — with step-by-step working. Exact BigInt math, no signup, runs in your browser.

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LiveHealth

Ovulation Calculator

Predict your ovulation day, six-day fertile window, most-fertile days, next period dates, implantation window and due date from your last period and cycle length. Works for any cycle length, runs entirely in your browser.

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LiveAI

Context Window Calculator

Pick an LLM (GPT, Claude, Gemini, Llama, DeepSeek), enter your text in words, characters, A4 pages, code lines or tokens, and instantly see whether it fits the model's context window, the percentage used, and how many tokens remain for the reply.

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LiveText

Singlish to Sinhala

Convert phonetic English (Singlish) into correct Sinhala Unicode in real time, entirely in your browser — type Sinhala with a normal English keyboard, then copy-paste it anywhere.

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LiveHealth

Heart Rate Zones

Find your maximum heart rate and the five training zones in exact bpm — recovery, fat-burn, aerobic, threshold and VO₂ max. Add your resting HR for personalised Karvonen targets. Runs entirely in your browser.

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LiveUtility

Typing Speed Test

Measure your typing speed in words per minute, net (accuracy-adjusted) WPM, and accuracy — live as you type. English, Sinhala, and Tamil passages, timed runs, no signup, runs entirely in your browser.

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LiveText

Morse Code Translator

Translate text to International Morse code and decode Morse back to text in your browser, with audio and light playback at an adjustable speed. ITU-R M.1677-1, no signup.

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LiveAI

Self-Hosting Cost Calc

Find the monthly token volume where renting a cloud GPU to self-host an open LLM (Llama, Mistral, Qwen) beats paying a closed API per token. Shows both monthly costs, the crossover volume, and a self-host or stay-on-API verdict in USD and LKR.

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LiveAI

LLM Training Compute Calc

Estimate the FLOPs, petaFLOP/s-days, GPU-hours, and dollar cost to train a transformer LLM from scratch with the 6ND rule, and check the Chinchilla compute-optimal token count (20 tokens per parameter). Reproduces GPT-3's published compute. Sources cited, runs in your browser.

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LiveAI

AI Music Cost Calculator

Compare what it costs to generate AI music each month across Suno, Udio, ElevenLabs Music, and Mubert. Picks the cheapest commercial plan for your volume and shows effective cost per song in USD and LKR.

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LiveAI

RAG Cost Calculator

Estimate the full one-time and monthly cost of a Retrieval-Augmented Generation pipeline — embedding, vector storage, retrieval, and LLM generation — across OpenAI, Anthropic, Google, Cohere and Pinecone, in USD and LKR. Every price sourced.

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LiveAI

AI Hashtag Generator

Generate ranked, copy-ready, platform-aware hashtags from any caption or topic — extracted in your browser with YAKE/RAKE, capped at each platform's real limit, no signup.

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LiveAI

AI Tokenizer Visualizer

Paste any text and watch it split into the exact tokens GPT-4o, GPT-5 and GPT-4 see — per-token IDs, colour-coded chips, and encoding compare, all in your browser with no signup.

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LiveUtility

Sri Lanka Prayer Times

Today's Fajr, Dhuhr, Asr, Maghrib (Iftar) and Isha plus Sehri and sunrise for Colombo and 20+ Sri Lankan cities. ACJU-recognised 18° convention, computed in your browser — no signup, no location access.

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LiveTime

Time Card Calculator

Enter clock-in, clock-out and break times to get hours worked per day, the weekly total, and an automatic regular-vs-overtime split. Optional hourly pay turns hours into regular, overtime, and gross pay. Runs entirely in your browser.

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LiveAI

Word Error Rate (WER)

Paste a reference and a hypothesis transcript to get Word Error Rate, Character Error Rate, word accuracy, and a colour-coded alignment of every substitution, deletion, and insertion. NIST SCTK method, runs entirely in your browser.

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LiveUtility

UTM Builder

Build correctly-formatted UTM campaign URLs and see which GA4 Default Channel Group each link will land in, entirely in your browser.

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LiveHealth

Calories Burned Calculator

Estimate how many calories you burn walking, running, cycling, swimming, the gym, cricket, or 90+ activities from your body weight and duration, using published MET values. Includes a steps-to-calories mode. Runs in your browser, sources cited.

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LiveAI

AI Voice Agent Cost

Estimate the real per-minute and monthly cost of a cascaded AI voice agent — chaining speech-to-text, an LLM, text-to-speech, optional Twilio telephony and a Vapi/Retell platform fee. Breaks the blended cost down by layer so you see which dominates, in USD and LKR. Runs in your browser, rates cited.

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LiveHealth

Ideal Weight Calculator

Work out your ideal body weight from height and sex using all four clinical formulas — Devine, Robinson, Miller and Hamwi — plus the WHO healthy range and the adjusted body weight clinicians use for drug dosing. Metric or imperial, runs in your browser, sources cited.

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LiveAI

AI Cost Per Word

Convert AI token pricing into cost per word, per page, and per article for GPT-4o, Claude, and Gemini — in USD and LKR, with a cheapest-first model comparison and monthly totals.

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LiveAI

BLEU Score Calculator

Calculate the BLEU score for a candidate translation against one or more references, entirely in your browser. Shows the modified n-gram precisions p1–p4, the brevity penalty, and the clipped match counts. Matches NLTK sentence_bleu, no signup.

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LiveAI

METEOR Score Calculator

Calculate the METEOR score for a candidate translation against a reference, entirely in your browser. Shows unigram matches, precision, recall, the recall-weighted Fmean, the chunk-based fragmentation penalty, and the aligned tokens. Matches NLTK single_meteor_score, no signup.

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LiveAI

Regression Metrics Calculator

Paste your model's predicted values and the actual values to instantly get MAE, MSE, RMSE, R², Adjusted R² and MAPE — each with its formula and a full residual table. Matches scikit-learn, runs in your browser, no signup.

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LiveAI

ROUGE Score Calculator

Calculate ROUGE-1, ROUGE-2, ROUGE-L and ROUGE-Lsum precision, recall and F1 between a generated summary and one or more references, entirely in your browser. Shows matched n-grams and the longest common subsequence. Matches Google rouge-score, no signup.

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LiveAI

Cohen's Kappa Calculator

Enter a two-rater agreement matrix and get Cohen's kappa (κ) with observed vs chance agreement, a 95% confidence interval, optional linear/quadratic weighted kappa for ordinal scales, and the Landis & Koch strength-of-agreement band. Runs in your browser, no signup.

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LiveAI

Fleiss' Kappa Calculator

Compute Fleiss' kappa for three or more raters from a subject-by-category count matrix. Get the overall κ, observed vs chance agreement, per-category kappa, and the Landis & Koch agreement band. Runs in your browser, no signup.

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LiveTravel

SL Road Distance Calc

Find the road distance and estimated drive time between any two major Sri Lankan towns. Compares the shortest toll-free route with the fastest expressway route using the RDA inter-city distance schedule, then links the distance into our fuel, bus, train and toll calculators.

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LiveAI

Softmax Calculator

Convert a list of logits into a probability distribution with the softmax function. Adjust temperature to flatten or sharpen the result, and see each class probability, the argmax, entropy and a numerically-stable step-by-step breakdown — verified against PyTorch, entirely in the browser.

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LiveAI

Perplexity Calculator

Compute language-model perplexity from token probabilities, cross-entropy loss, or log-likelihood, with nats and bits-per-token conversions. Step-by-step, matches PyTorch, runs entirely in the browser.

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LiveAI

Cosine Similarity Calc

Compute the cosine similarity, cosine distance, and angle between two numeric vectors or two short texts, with the full dot-product and magnitude working. Matches scikit-learn, runs entirely in the browser.

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LiveAI

Levenshtein Distance Calc

Computes the Levenshtein edit distance between two strings with a full Wagner–Fischer DP matrix and step-by-step edit operations, entirely in the browser.

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LiveAI

Cross-Entropy Loss Calc

Compute cross-entropy (log) loss for binary and multi-class classification from labels and predicted probabilities or logits. Shows per-sample loss, the mean log-loss metric, perplexity and full step-by-step working — matches scikit-learn log_loss and PyTorch CrossEntropyLoss, entirely in the browser.

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LiveAI

IoU Calculator

Compute Intersection over Union for two bounding boxes or two label sets. Returns IoU, the Dice/F1 coefficient, raw intersection and union, a threshold pass/fail verdict, and a scaled overlap diagram — entirely in your browser, sources cited.

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LiveAI

Euclidean Distance Calc

Compute the Euclidean (L2) distance between two points or two numeric vectors of any dimension, with the full per-dimension working. Also shows the squared Euclidean, Manhattan (L1), and Chebyshev (L∞) distances, and matches scikit-learn and NumPy — entirely in your browser.

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LiveAI

KL Divergence Calc

Compute the Kullback–Leibler divergence D(P‖Q) between two discrete probability distributions, in bits or nats, with the full per-term working. Also shows the reverse divergence D(Q‖P), cross-entropy H(P,Q) and entropy H(P) — entirely in your browser, matched to SciPy.

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LiveAI

Pearson Correlation Calc

Paste two columns to get the Pearson correlation r, r², covariance, a t-test with two-tailed p-value, and a scatter plot — with full step-by-step working. Matches scipy.stats.pearsonr, runs entirely in your browser.

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LiveAI

Spearman Correlation

Paste two columns to get Spearman's ρ (rho), a t-test with two-tailed p-value, a strength reading, and the full rank working — with mid-rank tie correction. Matches scipy.stats.spearmanr, runs entirely in your browser.

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LiveAI

Hamming Distance Calc

Compute the Hamming distance between two equal-length binary strings, text strings, or numeric vectors — the count of positions that differ. Also shows the normalised Hamming loss, similarity, and exactly which positions mismatch, entirely in your browser.

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LiveAI

Sigmoid Calculator

Compute the logistic sigmoid σ(x) = 1/(1+e⁻ˣ) for one or more values, plus its derivative σ′(x) and its inverse (the logit), with a numerically-stable step-by-step breakdown and a plotted S-curve. Verified against PyTorch, entirely in the browser.

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LiveAI

TF-IDF Calculator

Compute the full TF-IDF weighting for a small corpus — the term-frequency table, the IDF per term, and the final TF-IDF matrix, with the complete per-term working. Supports the textbook and scikit-learn smoothed variants, runs entirely in your browser.

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LiveAI

Jaccard Similarity Calc

Compute the Jaccard similarity coefficient and distance between two sets, text snippets, or binary vectors, with the intersection/union breakdown and the substituted formula — all in the browser. Matches scikit-learn jaccard_score.

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LiveAI

Dot Product Calculator

Compute the dot product (scalar product) of two vectors with the full element-wise breakdown, each vector's magnitude, the cosine of the angle, the angle in degrees and radians, and an orthogonality check — all in the browser, every formula shown.

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LiveAI

Gini Impurity Calculator

Compute the Gini impurity of a decision-tree node from class counts or proportions, with the full 1 − Σ pₖ² working, a Shannon-entropy comparison, and the Gini gain of a candidate split. Matches scikit-learn, runs in the browser.

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LiveAI

F1 Score Calculator

Calculate the F1 score, precision, recall and F-beta of a binary classifier from confusion-matrix counts (TP, FP, FN) or directly from precision and recall, with every step of the arithmetic shown. Matches scikit-learn, runs in your browser.

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LiveAI

ROC AUC Calculator

Paste binary labels and predicted scores to get the ROC curve, AUC, Gini coefficient, and the Youden-optimal threshold instantly — cross-checked against scikit-learn's roc_auc_score, entirely in your browser.

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LiveAI

NDCG Calculator

Compute DCG, IDCG and NDCG@k for a ranked list of relevance scores, with every position's gain and log discount shown. Supports linear and exponential (2^rel − 1) gain and an optional rank cutoff k. Matches scikit-learn ndcg_score, runs entirely in the browser.

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LiveAI

Mean Reciprocal Rank

Compute the Mean Reciprocal Rank (MRR) of a search, QA, recommender or RAG retrieval system. Enter the first-hit rank per query or 0/1 relevance lists and get MRR with every reciprocal rank and the full arithmetic shown. The IR / TREC definition, runs entirely in the browser.

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LiveUtility

Lakhs & Crores Converter

Convert any amount between lakhs, crores, thousands, millions and billions instantly. See both comma styles (1,00,00,000 vs 10,000,000), the value in Rupees, the amount in words, and a digit-by-digit place-value breakdown. Exact, in-browser, no signup.

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LiveUtility

Chmod Calculator

Toggle read/write/execute for owner, group and other to get the octal code (755), symbolic string (-rwxr-xr-x) and the exact chmod command. Decodes octal or ls -l strings back the other way, with setuid/setgid/sticky support. Runs in your browser.

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LiveEducation

Citation Generator

Generate correctly formatted references and matching in-text citations in APA 7th, MLA 9th, IEEE, Harvard and Chicago. Build a full reference list in your browser — no signup, no ads.

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LiveAI

Brier Score Calculator

Compute the Brier score and Brier Skill Score for probabilistic predictions. Paste forecast probabilities and 0/1 outcomes to get the mean-squared-error of the probabilities, the skill score versus a baseline, the exact formula and a per-pair breakdown. Matches scikit-learn, runs in the browser.

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LiveAI

mAP Calculator

Compute Average Precision (AP) and mean Average Precision (mAP) from a ranked TP/FP detection list, with the full precision-recall table and both 11-point and all-point interpolation, entirely in your browser.

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LiveAI

Bayes' Theorem Calculator

Compute the posterior probability P(A|B) from a prior and the true-positive and false-positive rates using Bayes' theorem. Shows the evidence P(B), the complement, a fully substituted formula and a probability tree — the fast way to settle the false-positive paradox. Runs in your browser.

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LiveAI

AI Diagram Generator

Describe your system, database or process in plain English and an AI agent draws a professional, fully editable draw.io diagram for you — ER, use case, architecture, flowchart, Gantt and more. Free file download, 3 diagrams every 5 hours.

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LiveAI

Adjusted Rand Index Calc

Compares two clusterings (or a clustering against ground-truth labels) and computes the Adjusted Rand Index, the raw Rand Index, and the Fowlkes–Mallows index from two pasted label lists, with the pair-counting working shown. Matches scikit-learn, runs in your browser.

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LiveAI

Silhouette Score Calc

Compute the silhouette score (silhouette coefficient) of a clustering from raw data points and labels. Get the overall score, per-cluster means, and the full per-sample a(i)/b(i)/s(i) working — with misassigned points flagged. Matches scikit-learn silhouette_score, runs entirely in your browser.

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LiveEducation

Sample Size Calculator

Find the minimum survey or research sample size for any confidence level, margin of error, expected proportion, and population. Uses Cochran's formula with the finite-population correction, shows the working, and gives a methodology sentence you can cite.

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LiveAI

A/B Test Significance

Check whether the difference between your control and variant is statistically significant or just noise. Enter visitors and conversions to get the conversion rates, relative uplift, p-value, confidence level, and a plain-English verdict from a two-proportion z-test. Runs in your browser; every result is cross-checked against Pearson's chi-square test.

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LiveAI

AI Parameter Count Calc

Compute the exact parameter count of a decoder-only (GPT-style) transformer from its architecture — vocab, hidden size, layers, FFN size, and head config — broken down into embedding, attention, feed-forward, and norm shares. GPT-2 124M and GPT-3 175B verified, formulas cited.

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LiveAI

AI Temperature Calc

Interactive visualizer for LLM temperature, top-p (nucleus), and top-k sampling. Drag the sliders and watch the next-token softmax probabilities sharpen, flatten, and truncate, with the exact math token by token. Runs in your browser, no API key, sources cited.

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LiveAI

Manhattan Distance Calc

Compute the Manhattan (L1 / taxicab / city-block) distance between two points or two numeric vectors of any dimension, with the full per-dimension working. Also shows the Euclidean (L2) and Chebyshev (L∞) distances, and matches scikit-learn and SciPy — entirely in your browser.

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LiveUtility

Old NIC → New NIC

Convert a Sri Lankan old 10-character NIC to the new 12-digit number (and back) with date of birth and gender decoded, using the Department for Registration of Persons numbering rule.

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LiveAI

Minkowski Distance Calc

Compute the Minkowski distance (the generalized Lₚ metric) between two numeric vectors of any dimension, for any order p ≥ 1, with the full per-dimension working. Shows the Manhattan (p=1), Euclidean (p=2), and Chebyshev (p→∞) special cases side by side, and matches scikit-learn and SciPy — entirely in your browser.

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LiveHealth

A1C Calculator

Convert HbA1c to estimated average blood glucose in mg/dL and mmol/L (and back) using the ADA's ADAG formula, with an A1c⇄eAG reference chart and ADA normal/prediabetes/diabetes range check. Runs entirely in your browser.

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LiveUtility

Rahu Kalaya Calculator

Calculates the daily Rahu Kalaya, Yamaganda and Gulika Kaalam time windows for any date and Sri Lankan city from real sunrise and sunset.

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LiveEducation

Statistics Calculator

Paste a list of numbers to instantly compute mean, median, mode, range, variance, standard deviation, quartiles and IQR, with a sample-vs-population toggle and step-by-step working.

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LiveEducation

Confidence Interval Calc

Calculate the confidence interval and margin of error for a sample mean (z or t) or proportion (Wilson/Wald) at any confidence level, with the working shown.

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LiveEducation

T-Test Calculator

Run a Student's t-test from raw data — one-sample, paired, or independent two-sample (pooled or Welch). Returns the t-statistic, degrees of freedom, p-value, confidence interval, and verdict with full working shown.

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LiveEducation

Cohen's d Calculator

Compute Cohen's d and the bias-corrected Hedges' g from means and SDs, raw data, or a t value — for independent, paired, or one-sample designs. Returns the 95% CI, overlap, and a small/medium/large verdict with full working shown.

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LiveAI

AI Presentation Maker

Describe your topic and get a designed, editable presentation: AI plans it slide by slide, you approve the outline, then it writes the deck with real images, icons and themes. Edit anything (or ask AI), then download as PDF, PowerPoint or animated HTML. Free.

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LiveFinance

SL Gold Price Calculator

Work out what your gold is worth in Sri Lankan rupees today. Enter a weight in sovereigns (පවුම්), grams or troy ounces and a karat (24K/22K/21K/18K/14K) and get the metal value, a per-karat table and a sovereign ↔ gram ↔ troy-ounce conversion. Sources cited, no signup.

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LiveHealth

eGFR Kidney Function Calc

Estimate kidney function (eGFR) from serum creatinine, age and sex using the race-free CKD-EPI 2021 equation, with KDIGO CKD-stage interpretation.

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LiveEducation

Chi-Square Test Calculator

Run Pearson's chi-square test in your browser — goodness-of-fit or test of independence. Get the χ² statistic, degrees of freedom, exact p-value, critical value, expected-count matrix and a plain-English verdict, with full working.

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LiveFinance

SL Payslip Generator

Generate a print-ready Sri Lankan monthly salary slip with statutory EPF (8%/12%), ETF (3%) and APIT/PAYE deductions, take-home pay, and true employer cost.

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LiveEducation

Normal Distribution Calc

Find normal-distribution probabilities, percentiles, z-scores and p-values for any mean and standard deviation — left, right, two-tailed, between two values, or inverse — with the bell curve and working shown.

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LiveUtility

Moon Phase & Poya Calendar

Find tonight's moon phase, illumination and age, see if today is a Poya, and browse the full-year Poya calendar with names (Duruthu–Unduvap) — computed from deterministic Meeus astronomy in Sri Lankan time.

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LiveFinance

CAGR Calculator

Find the compound annual growth rate between two values, project a future value from a CAGR, or solve for the years needed. Year-by-year path, real (inflation-adjusted) CAGR, and doubling time — sources cited.

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LiveAI

AI Model Size Calculator

Calculate the exact on-disk file size of any LLM at FP32, FP16, 8-bit, 4-bit, or GGUF quants like Q4_K_M — and how long it downloads on your connection. Compare every quant side by side. Free, no signup, sources cited.

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LiveHealth

BSA Calculator

Calculate body surface area in m² from height and weight using all five published formulas — Mosteller, Du Bois, Haycock, Gehan-George and Boyd — and convert a mg/m² drug dose into a patient dose. Free, no signup, sources cited.

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LiveAI

AI Knowledge Cutoff

Look up any major LLM's training-data knowledge cutoff and release date, straight from the provider's model card, with how stale its knowledge is today.

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LiveFinance

CEB TOU Tariff Calculator

Check if a CEB or LECO Time-of-Use electricity meter saves you money. Split your usage into off-peak, day and peak units and compare the D-TOU bill against the standard block tariff. Free, sources cited.

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LiveHealth

Waist-to-Height Ratio

Calculate your waist-to-height ratio (WHtR) and risk band using the NICE 'keep your waist to less than half your height' rule. Sex- and ethnicity-neutral — a better central-fat screen than BMI for South Asian body types. Free, sources cited.

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LiveAI

LLM Benchmark Compare

Compare the top large language models by their published benchmark scores — MMLU-Pro, GPQA Diamond, SWE-bench Verified, HumanEval, AIME, MATH and MMMU. Pick 2–6 models, sort by any benchmark, and get an apples-to-apples composite. Every figure cited from the vendor's own model card.

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LiveAI

AI Model Deprecation Tracker

Check whether the OpenAI, Anthropic, Google, or Azure model you call is active, deprecated, or retired — with official shutdown dates, a live days-until-retirement countdown, and the recommended replacement. Every row cites the provider's own deprecations page.

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LiveAI

AI OCR Cost Calculator

Compare the monthly cost of document OCR across AWS Textract, Google Document AI, Azure Document Intelligence, and Mistral OCR from one input — pages per month and what you need extracted. Ranks vendors cheapest-first in USD and LKR, with published per-1,000-page rates and volume tiers cited.

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LiveAI

AI Max Output Tokens

Look up the maximum output (completion) tokens for every current LLM — Claude, GPT-4o, Gemini, Llama and more — and check whether your desired response fits in a single API call or needs chunking. Per-model caps cited from vendor docs, separate from the context window.

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LiveEducation

SL University Bursary Check

Check if you qualify for the UGC university bursary in Sri Lanka and estimate the annual payout. Applies the official Commission Circular 04/2025 income ceiling, concessions and Rs 6,500/month rate. Free, no signup, sources cited.

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LiveAI

AI Free Tier Compare

Compare the free tier of every major LLM API — Gemini, Groq, Mistral, OpenRouter, Cohere, Hugging Face, OpenAI and Anthropic. See free requests/day, rate limits, whether a credit card is required, vision support and whether prompts are used for training, then get the best no-cost option for your daily volume. Sources cited, no signup.

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LiveAI

AI Plan Comparison

Compare the paid consumer plans of ChatGPT, Claude, Gemini, Grok and Perplexity side by side — message limits, models unlocked, vision, voice, file upload, image generation and deep research, plus price in USD and Sri Lankan rupees. Enter your usage and get the cheapest plan that fits. Sources cited, no signup.

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LiveAI

AI Coding Assistant Cost

Compare the real monthly and annual cost of GitHub Copilot, Cursor, Claude Code, Windsurf, Codeium, Tabnine, JetBrains AI and Gemini Code Assist for any team size. Pick plan tiers, add optional metered Claude Code API usage, and get the cheapest option in USD or Sri Lankan rupees. Sources cited, no signup.

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LiveTravel

SL Tourist VAT Refund

Estimate the cash VAT refund a tourist can claim at Colombo airport under Sri Lanka's Tourist VAT Refund Scheme (TVRS). Enter your eligible purchases to get the 18% refund, check the Rs 50,000 minimum, and confirm eligibility. Free, no signup, IRD sources cited.

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LiveAI

Shannon Entropy Calc

Compute Shannon entropy H(X) for any discrete distribution — from counts or probabilities — in bits, nats, or dits, with full per-term working, maximum entropy and efficiency. Also computes decision-tree information gain (ID3), all in your browser, matched to SciPy.

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LiveAI

MCC Calculator

Compute the Matthews Correlation Coefficient from a confusion matrix or two label columns, with formula breakdown and imbalanced-data interpretation, entirely in the browser.

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LiveUtility

SL Election Seat Calculator

Turn district vote counts into parliamentary seats. Applies Sri Lanka's official 5% cut-off, the bonus seat, and the Hare-quota largest-remainder method across all 22 electoral districts. Free, no signup, sources cited.

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LiveEducation

Grade 5 Scholarship Cut-Off

Check whether a Grade 5 Scholarship mark clears your district's official cut-off, by year and medium — and see which national schools it would have qualified for. Department of Examinations figures, no signup, sources cited.

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LiveFinance

SL Loan Eligibility Calc

Find the maximum housing, vehicle, personal or education loan you qualify for in Sri Lanka based on your net income, existing debt, the bank's debt-service-ratio cap, interest rate and tenure. The inverse of the EMI calculator. Free, no signup, sources cited.

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LiveAI

AI LLM License Checker

Check in plain English whether Llama, Mistral, Gemma, Qwen, DeepSeek, Command R, GPT, Claude or Gemini is free for commercial use — with MAU caps, attribution rules, and a link to each official license. Free, no signup, sources cited.

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LiveUtility

Uptime SLA Calculator

Convert any uptime SLA (99.9%, 99.99%, five nines) into the exact downtime it allows per day, week, month and year — or reverse from real downtime to the uptime % you hit, with AWS, Google Cloud and Azure service-credit bands. Free, no signup, sources cited.

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LiveAI

ECE Calculator

Compute Expected Calibration Error and Maximum Calibration Error from prediction confidences with a per-bin reliability table and reliability diagram. Free, no signup, sources cited.

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LiveAI

Tool-Use Token Cost

Estimate the hidden token cost of re-sending tool/function definitions on every LLM API call, per model, with prompt-caching and schema-trimming savings.

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LiveFinance

SL Withholding Tax (WHT)

Calculate the withholding tax / Advance Income Tax (AIT) deducted at source on Sri Lankan interest, dividends, rent, service fees, and royalties under the IRD rates from 1 April 2025 — with the rate, net received, and final-vs-creditable treatment.

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LiveAI

AI Embedding Compare

Compare popular text-embedding models (OpenAI, Cohere, Voyage, Google, Mistral, and open-source) by dimensions, max tokens, price per 1M, and MTEB quality score, and project the cost to embed your corpus.

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LiveDeveloper

PSNR Calculator

Calculate Peak Signal-to-Noise Ratio (PSNR) in decibels for image and video quality — from a known MSE and bit depth, or from two pixel-value lists. Shows MAX, the MSE used, a quality band, and the full derivation. Free, no signup.

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LiveAI

AI Video Generator Compare

Compare Sora 2, Veo 3, Runway, Kling, Pika, Luma, Hailuo, Firefly and Stable Video side by side — estimated cost per 5-second clip, max clip length, resolution, native audio, commercial use, API and free tier. Free, sources cited.

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LiveAI

AI Coding Assistant Compare

Side-by-side comparison of the major AI coding assistants — Cursor, GitHub Copilot, Claude Code, Windsurf, Amazon Q Developer, JetBrains AI, Tabnine and Continue — by plan price, free tier, model access, IDE support, agent mode and self-host. Set your budget, IDE and team size and get the best-fitting product. Prices in USD, sources cited, no signup.

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LiveAI

AI Image Generator Compare

Side-by-side comparison of the major AI image generators — Midjourney, OpenAI GPT Image, Google Imagen, FLUX, Adobe Firefly, Stable Diffusion, Ideogram and Leonardo — by cheapest plan, free tier, per-image API price, max resolution, commercial-use licensing, open weights and text-in-image quality. Filter by what you need and get a source-cited recommendation. No signup.

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LiveAI

AI Music Generator Compare

Side-by-side comparison of the major AI music generators — Suno, Udio, ElevenLabs Music, Stable Audio, AIVA, Soundraw, Beatoven and Mubert — by cheapest plan, free tier, vocals vs instrumental, max track length, output formats, commercial use, copyright ownership and public API. Filter by what you need and get a source-cited recommendation. No signup.

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LiveAI

Speech-to-Text Compare

Side-by-side comparison of the major hosted speech-to-text (STT) APIs — OpenAI Whisper, Deepgram, AssemblyAI, Google Cloud, Azure AI Speech, Amazon Transcribe, Groq, ElevenLabs Scribe and Rev AI — by price per minute, real-time vs batch support, diarization, word timestamps, language coverage and published WER. Pick your providers, enter your monthly audio volume, and rank them by projected cost. Every figure cites the vendor source.

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LiveAI

Text-to-Speech Compare

Side-by-side comparison of the major hosted text-to-speech (TTS) APIs — ElevenLabs, OpenAI, Google Cloud, Azure AI Speech, Amazon Polly, PlayHT, Murf, Cartesia and Deepgram Aura — by price per character, voice cloning, streaming latency, language coverage, output formats, commercial-use terms and published naturalness. Pick your providers, enter your monthly volume in characters, words or minutes, and rank them by projected cost. Every figure cites the vendor source.

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LiveFinance

Govt Salary Increase 2025/27

See how your public-sector basic salary rises across the three phases of Public Administration Circular 10/2025 — 30% from April 2025, 65% from January 2026, 100% from January 2027. Enter your current and revised basic for the extra rupees and new monthly salary at each phase. Free, no signup, sources cited.

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LiveFinance

Govt Salary Scale Finder

Look up the official Sri Lankan public-service salary scale for any salary code (MN-1, MA-3, MM-1, SL-2 and more). See the initial salary, the annual increment, the number of steps, the years to reach the maximum, and your basic salary at any step or year of service. Built from Public Administration Circular 03/2016 Schedule I. Free, no signup, sources cited.

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LiveAI

Vector DB Compare

Compare the major vector databases — Pinecone, Weaviate, Qdrant, Milvus/Zilliz, Chroma, pgvector, Redis and MongoDB Atlas — on free tier, license, hosting model, max dimensions, index types (HNSW/IVF/DiskANN) and hybrid search. Pick 2–6, sort any column, and read a cited 'which to choose' verdict. Free, no signup.

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LiveFinance

SL Bank SWIFT Code Finder

Find the official SWIFT/BIC code for any licensed Sri Lankan bank to receive money from abroad, and reverse-decode any code into its bank, country and branch. Built from the CBSL SWIFT codes list. Free, no signup.

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LiveUtility

SL Phone Number Lookup

Validate any Sri Lankan phone number, find its network operator (Dialog, SLT-Mobitel, Hutch) or the area code's city, and convert it to local, +94 E.164, and SMS-gateway formats. Runs entirely in your browser, no signup.

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LiveAI

AI Web Search Cost

Estimate the true monthly cost of LLM web search — the per-search/grounding tool fee plus the retrieved-content input tokens — across Claude, GPT, Gemini and Sonar, with a cheapest-provider comparison.

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LiveAI

AI Hallucination Rates

Compare how often leading LLMs hallucinate using the published Vectara HHEM factual-consistency leaderboard. Pick two models and a document count to see each one's hallucination rate, factual-consistency rate, answer rate, the relative reduction, and the expected number of wrong summaries for your batch. Full ranked table of 30 models included.

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LiveAI

AI Data Privacy Compare

Does ChatGPT, Claude, Gemini, Copilot, Meta AI, Grok, DeepSeek or Mistral train on your data? A side-by-side reference across consumer, API and enterprise tiers — training, retention, human review, opt-out and Zero-Data-Retention — every cell cited to the official policy.

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LiveFinance

Motorcycle Import Tax

Estimate the landed cost and every tax line — CID, excise, PAL, SSCL and VAT — for importing a motorcycle or scooter (HS 8711) to Sri Lanka. Petrol and electric, by engine cc or motor kW. Sources cited, no signup.

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LiveFinance

Retirement Age Calculator

Find the exact dates you become eligible to retire (age 60), withdraw your full EPF (55 for men / 50 for women), claim ETF, and qualify for gratuity in Sri Lanka — plus the precise years, months and days remaining to each. Statutes cited, no signup.

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LiveUtility

Speech Time Calculator

Convert words to spoken minutes and back at slow, conversational, average or fast pace. Find how many words a 5-minute speech needs, compare paces, and see silent-reading time. Free, instant, runs in your browser.

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LiveUtility

Long Weekend Planner 2026

Find every long weekend in Sri Lanka's gazetted 2026 holiday calendar and the smartest days to take annual leave — turn 3 leave days into 9 days off. Public, Bank and Mercantile sets. Free, no signup, sources cited.

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LiveHealth

Blood Pressure Checker

Classify a systolic/diastolic reading into the correct blood-pressure category under both the ACC/AHA 2017 and WHO/ESC-ESH standards, with mean arterial pressure and pulse pressure. Free, no signup, sources cited.

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LiveUtility

Content Moderation Checker

Paste any comment, review, or message and check it for toxicity, profanity, threats, insults, and hate speech across the six Jigsaw categories. Offending words highlighted, sources cited, no signup, nothing stored.

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LiveHealth

Odds Ratio & Relative Risk

Compute the odds ratio, relative risk, ARR, RRR and number needed to treat or harm from a 2×2 study table — each with a 95% confidence interval (Woolf & Katz methods). Free, no signup, sources cited.

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LiveFinance

Employee Cost Calculator

Work out the true cost-to-company of an employee in Sri Lanka — gross salary plus employer EPF (12%), ETF (3%) and the half-month-per-year gratuity provision. Free, no signup, statutory sources cited.

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LiveFinance

TIN Registration Checker

Check in seconds whether you must register for a TIN, register for income tax, and file a return in Sri Lanka. Enter your age, residency and income — get a clear verdict, the deadline, the penalty, and how to register at the IRD. Free, no signup, sources cited.

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LiveFinance

Customs Duty Calculator

Calculate the full Sri Lanka import levy stack — CID, PAL, CESS, Surcharge, SSCL and VAT — on the CIF value of commercial goods, with total tax payable, landed cost and effective rate. Free, sources cited.

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LiveDeveloper

.gitignore Generator

Generate a clean, deduplicated .gitignore from GitHub's official templates — pick your languages, frameworks, IDEs and OS, then copy or download in one click. 100% client-side, no signup.

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LiveAI

LLM Speed Comparison

Compare the real-world response speed of hosted LLM APIs — GPT, Claude, Gemini, Llama, DeepSeek, Grok, Mistral. Pick 2–6 models, enter your output length, and rank them by estimated total response time, output tokens/sec, and time-to-first-token. Every figure cited from Artificial Analysis medians.

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LiveText

Keyword Density Checker

Paste any article to instantly see word and phrase frequency, keyword density percentages, and Google keyword-stuffing warnings — fully client-side.

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LiveDeveloper

TOML ⇄ JSON Converter

Convert TOML to JSON and JSON to TOML in your browser with validation, type-mapping notes, and a round-trip integrity check, per the TOML v1.0.0 spec.

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LiveUtility

htpasswd Generator

Generate Apache/Nginx .htpasswd credential lines (bcrypt, APR1-MD5, SHA-1) entirely in your browser, with a matching .htaccess snippet and a password verify mode.

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LiveAI

Fine-Tuning JSONL Validator

Validate an OpenAI chat fine-tuning .jsonl dataset against the documented format rules — malformed lines, invalid roles, missing assistant replies, unknown keys — and estimate example count and training tokens. Runs entirely in your browser; no upload, no API key.

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LiveDeveloper

AI API Error Code Lookup

Decode any OpenAI, Anthropic (Claude), or Google Gemini API error code — 429, 529, insufficient_quota, RESOURCE_EXHAUSTED and more. See the meaning, likely cause, the fix, and whether it's safe to retry. Curated from the official docs, fully offline.

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LiveFinance

Agrahara Insurance Calc

Work out exactly what the Agrahara scheme (NITF) reimburses for a hospital stay, surgery, childbirth or death claim across the Normal, Silver, Gold and Pension tiers. Compare tiers side by side and find your out-of-pocket gap. Free, NITF figures, sources cited.

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LiveFinance

Company Annual Return Fee

Itemise the exact Registrar of Companies fees for a Sri Lankan company's annual return (Form 15) and other post-incorporation filings — totalled in rupees, sources cited.

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LiveDeveloper

YAML ⇄ JSON Converter

Convert YAML to JSON and JSON to YAML entirely in your browser. Auto-detects direction, expands anchors/aliases and merge keys, handles multi-document streams, locates parse errors by line, and verifies each conversion with a round-trip check. No upload, no signup.

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LiveFinance

Attestation Fee Calculator

Calculate the exact cost to attest certificates at Sri Lanka's Ministry of Foreign Affairs and VFS Global before using them abroad — government fee per document plus VFS service and bank charges, line by line. Sources cited.

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LiveAI

AI Bot Blocker (robots.txt)

Generate ready-to-paste robots.txt rules to block AI crawlers — GPTBot, ClaudeBot, Google-Extended, PerplexityBot, CCBot and more — while keeping Google and Bing search untouched. Pick training scrapers vs. AI-search bots, see each bot's SEO impact, copy or download. Runs entirely in your browser.

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LiveAI

AI Agent Framework Compare

Compare the major LLM agent-building frameworks — LangGraph, LlamaIndex, CrewAI, AutoGen, OpenAI Agents SDK, Google ADK, PydanticAI, Semantic Kernel and Strands — side by side on language, license, multi-agent model, streaming, memory, RAG, MCP/tools and observability. Filter by what you need and pick a stack in one screen. Runs entirely in your browser, every cell source-cited.

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LiveDeveloper

Meta Tag Generator

Turn a short form into a ready-to-paste <head> block of SEO, Open Graph and Twitter/X Card meta tags — with live Google, Facebook and X preview cards and title/description length checks. Runs entirely in your browser, every tag source-cited.

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LiveDeveloper

SSIM Calculator

Calculate the Structural Similarity Index (SSIM) between two images, or from two pixel-value lists — with the luminance, contrast and structure breakdown, the C1/C2 constants used, and a quality band. Runs entirely in your browser, verified against scikit-image.

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LiveFinance

NPV & IRR Calculator

Evaluate whether a project is worth it: enter the initial outlay, your required return and the expected cash flows to get NPV, IRR, payback, discounted payback and the profitability index — with a plain-English accept/reject verdict and a year-by-year DCF table. LKR-first, no signup.

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LiveDeveloper

R Compiler

Write and run R online, free, no signup. Real R 4.x via WebAssembly runs entirely in your browser — vectors, summary(), data frames and base-R plots. Nothing is uploaded.

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LiveHealth

LDL Cholesterol Calculator

Calculate LDL ('bad') cholesterol from your lipid panel using the Friedewald and Sampson-NIH equations, plus non-HDL cholesterol and NCEP ATP III risk bands. Supports mg/dL and mmol/L, warns when Friedewald is unreliable. Free, no signup.

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LiveUtility

CSV to JSON Converter

Paste or upload CSV/TSV and get clean JSON instantly — quoted fields, custom delimiters, automatic type inference, and dot-notation nesting. Array of objects, array of arrays, or column-keyed output. Runs entirely in your browser, nothing uploaded.

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LiveAI

AI Note-Taker Comparison

Compare the major AI meeting note-takers (Otter, Fireflies, Fathom, Granola, tl;dv and more) by per-seat price, free-tier limits, languages and integrations, ranked by your team's projected cost.

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LiveAI

EU AI Act Risk Classifier

Classify any AI system into the EU AI Act's risk tiers — prohibited, high-risk, limited-risk or minimal-risk, plus the GPAI track — and get the exact article citations, obligations for your role and compliance deadline. A deterministic decision tree from Regulation (EU) 2024/1689.

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LiveEducation

Permutation & Combination

Compute permutations (nPr) and combinations (nCr) for any whole numbers, with or without repetition. Exact BigInt results, the factorial formula expanded with your numbers, step-by-step working, and all four standard cases compared at a glance.

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LiveAI

AI Reasoning Model Compare

Side-by-side comparison of the major AI reasoning models — OpenAI o3 & GPT-5 thinking, Claude extended thinking, Gemini thinking, DeepSeek-R1, Grok 4 and Qwen3 — by reasoning-token pricing, context window, knowledge cutoff and AIME / GPQA / SWE-bench scores. Sort, filter, pick by use case, and estimate a task's true cost once hidden thinking tokens are counted. Sources cited, no signup.

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LiveDeveloper

HTTP Status Code Lookup

Search every HTTP status code (100–599) with RFC 9110 / IANA-cited meanings and cacheable, retryable, and method-preserving flags. A built-in decision helper settles 301 vs 308, 401 vs 403, and 200 vs 201 vs 204, each answer citing its RFC section. No signup.

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LiveFinance

SL Vehicle Import Eligibility

Check if the car, van, cab, lorry, bus or motorcycle you want to import into Sri Lanka is actually allowed — the per-category age cap (computed the Customs way, manufacture to Bill of Lading), whether an Import Control License is needed, and the one-vehicle-per-12-months individual quota. Free, no signup, gazette sources cited.

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LiveDeveloper

MIME Type Lookup

Two-way MIME type lookup backed by the IANA Media Types registry: get the Content-Type for any file extension (.docx, .svg, .xlsx, .webp) or the extension for any media type, with copy-ready Content-Type headers and IANA-vs-de-facto labels. Runs entirely in your browser, no signup.

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LiveUtility

Cron Expression Generator

Build a valid cron expression from plain-English choices (every N minutes, daily at a time, weekdays only) or paste any cron string to get a plain-English explanation, a field-by-field breakdown, and the next 5 run times. Standard Unix 5-field crontab, fully in-browser.

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LiveFinance

Patent Fee

Work out the full NIPO government fee to patent an invention in Sri Lanka — filing, examination, grant and the escalating 20-year annual maintenance fees. Sources cited, no signup.

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LiveHealth

Diabetes Risk Score

Estimate your 10-year risk of type 2 diabetes from eight no-blood-test questions using the validated FINDRISC score — get a 0–26 score, a risk band, a plain '≈1 in N' likelihood and a South-Asian waist note. Runs entirely in your browser, no signup.

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LiveDeveloper

AI Tool Schema Generator

Turn a named function and its typed parameters into a ready-to-paste tool / function-calling JSON definition for OpenAI, Anthropic (Claude) and Google Gemini — each provider's exact wire format, side by side, with one click to copy. No API key, no signup, runs entirely in your browser.

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LiveDeveloper

llms.txt Generator

Create a valid llms.txt file for your website — the markdown manifest that tells ChatGPT, Claude, Perplexity and other LLMs which pages to read. Fill in a name, summary and link sections, then copy or download a spec-compliant /llms.txt. Runs entirely in your browser, no signup.

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LiveAI

Subscription vs API Cost

Find out whether a flat AI subscription (ChatGPT Plus, Claude Pro, Gemini Advanced) or pay-as-you-go API access is cheaper for your usage. Enter your daily messages and token sizes to see the monthly cost both ways in USD and LKR, plus the break-even messages per day.

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LiveAI

Translation API Compare

Side-by-side comparison of the major machine-translation and LLM-as-translator APIs — DeepL, Google Cloud Translation, OpenAI, Anthropic Claude, Microsoft Azure Translator, Amazon Translate, DeepSeek and ModernMT/Lara — by price per million characters, language coverage, glossary and document support, custom/adaptive models, free tier and commercial-use terms. Pick your providers, enter your monthly volume in characters or words, and rank them by projected cost. Every figure cites the vendor source.

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LiveDeveloper

MCP Config Generator

Generate valid Model Context Protocol (MCP) server config for Claude Desktop, Claude Code, Cursor, VS Code and Windsurf from a simple form — correctly keyed and JSON-valid. Runs in your browser, keys never leave the page.

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LiveAI

AI Model ID Cheat Sheet

The exact API model identifier strings for OpenAI, Anthropic, Google Gemini, Meta Llama, Mistral, DeepSeek and xAI Grok — each with a copy button, base endpoint URL and a minimal cURL/Python/JS snippet. Filter by provider and modality, toggle aliased vs pinned IDs. Sources cited.

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LiveDeveloper

XML to JSON Converter

Convert XML to clean, well-formed JSON instantly and entirely in your browser. Handles attributes (configurable prefix), nested elements, repeated elements collapsed to arrays, CDATA, and a configurable text-node key. Locates well-formedness errors by line and column, and verifies every conversion with a JSON round-trip. No upload, no signup.

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LiveFinance

Income Tax Refund

Reconcile the APIT (PAYE) your employer deducted over the year against your actual liability under the IRD 2025/26 slabs, and see your exact refund due or balance payable. Built for mid-year job changers and people with two employments. Free, no signup, sources cited.

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LiveFinance

Flat ↔ Reducing Calculator

Convert an advertised flat (add-on) interest rate into the true reducing-balance and effective annual rate for a Sri Lankan vehicle lease or personal loan — and back again. See the real monthly instalment, total interest and a reducing-balance breakdown. Free, no signup, CBSL method cited.

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LiveAI

AI Audio Token Cost Calc

Convert an audio clip's duration (or a measured audio_tokens count) into the exact audio input tokens GPT-4o-audio and Gemini bill, then price it per request and per month in USD and LKR. Gemini's fixed 32 tokens/second rule is cited; compares all four models side by side. Runs in your browser, no signup.

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Coming soon (2)

Coming soonEducation

Sri Lanka GPA Calculator

Calculate your semester and cumulative GPA for UCSC, SLIIT, NSBM, Moratuwa and other Sri Lankan universities.

Coming soonFreelance

USD-LKR Freelancer Calculator

Convert your freelance USD earnings to LKR with live rates and a side-by-side comparison of Wise, Payoneer, Skrill, and bank-wire fees.

Frequently asked questions

See what the community rates highest on the Top Tools leaderboard, or request a toolwe don't have yet.