Free Utility Tools

The everyday odds-and-ends — converters, decoders, checkers and small helpers that don't fit a neat category but solve a real, common task. All free and instant.

This is the catch-all for genuinely useful single-purpose tools: the kind of thing you search for once, use, and bookmark. No account, no ads, no friction.

60 free tools·No signup·Free forever

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

Stopwatch

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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

Zerostack Rust Calculator

Check whether the Zerostack Rust coding agent fits your laptop's RAM and what it costs per month across OpenRouter, Anthropic, OpenAI, Gemini, or local Ollama — with the exact cargo install command.

Sinhala Name Meanings

Look up the meaning, Sinhala script, gender, and etymology of Sinhala personal names — Induwara, Tharindu, Sandali, Kusal and more. Dictionary-cited, with famous bearers and a permalink for every name.

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.

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.

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.

Frequently asked questions

What counts as a utility tool here?: Anything practical that doesn't fit Finance, Documents, Image and the other named categories — everyday converters, checkers and helpers.

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Finance Calculators AI Tools Document Tools Image Tools Text Tools Developer Tools Health Calculators Time & Date Tools Generators Education Tools Freelance Tools Travel Tools