Top free tools, voted by the community

Sri Lanka A/L Z-Score Calculator

Education · Compute your Sri Lankan G.C.E. Advanced Level Z-score from three subje

AI Voice Generator

AI · Turn text into realistic AI speech and download the MP3 — free, no sig

Sri Lanka NIC Decoder

Utility · Decode any Sri Lankan NIC (old 9-digit + V/X or new 12-digit) to its d

Sri Lanka Tax Calculator

Finance · Calculate your monthly and annual personal income tax (APIT) for Sri L

A/L Combination Validator

Education · Pick any three A/L subjects and see which UGC stream the combination u

No-Pay Leave Calculator

Finance · Calculate the exact salary cut for no-pay (unpaid) leave days in Sri L

Text to Speech

Text · Convert text to spoken audio using your browser's built-in voices. Adj

AI Audio Transcriber

AI · Upload an audio or video file and get a timestamped transcript in 99 l

Case Converter

Text · Convert text between UPPERCASE, lowercase, Title Case, Sentence case,

EXIF Metadata Viewer

Image · View all EXIF and metadata of any photo or video — camera, exposure, c

Grade 1 Age Check

Education · Enter your child's date of birth and instantly see which year they're

JSON to TypeScript

Utility · Paste any JSON and instantly get clean TypeScript interfaces or type a

LaTeX Editor

Developer · Write LaTeX in the browser and see the compiled PDF as you type. Do no

Random Name Generator

Utility · Generate random first and last names filtered by origin (English, Sinh

University Cutoff

Education · Enter your A/L Z-score, stream and district to see which Sri Lankan st

.gitignore Generator

Developer · Generate a clean, deduplicated .gitignore from GitHub's official templ

.htaccess Generator

Developer · Build a valid Apache .htaccess file from toggles — force HTTPS, www/no

.lk Domain Price

Utility · Find the exact official LK Domain Registry price to register or renew

1RM Calculator

Utility · Estimate your one-rep max (1RM) from a weight × reps set using four pe

3D Printer Import Tax

Finance · Calculate the landed cost and every import levy — PAL, VAT and SSCL (C

A/B Test Significance

AI · Check whether the difference between your control and variant is stati

Age Calculator

Utility · Calculate your exact age in years, months, days, hours, and minutes. I

Cohen's d Calculator

Education · Compute Cohen's d and the bias-corrected Hedges' g from means and SDs,

Image to Text (OCR)

Documents · Extract text from images, screenshots, and scans entirely in your brow

Number Plate Decoder

Travel · Decode any Sri Lankan number plate into its province, vehicle class (c

Passport Fee

Finance · Add up the exact rupee cost for a Sri Lankan passport — Normal or One-

Sri Lanka EPF Calculator

Finance · Project your EPF and ETF balance at retirement using statutory contrib

Visa-Free Finder

Travel · Look up every country a Sri Lankan ordinary passport holder can enter

A/L & O/L Grade Calculator

Education · Convert G.C.E. Advanced Level or Ordinary Level subject marks (0–100)

A/L Repeat Eligibility Check

Education · Re-sitting the GCE A/L? Answer a few questions and get a clear eligibl

A/L Stream Eligibility Check

Education · Enter your O/L grades to check if you qualify to sit GCE A/L and which

A1C Calculator

Health · Convert HbA1c to estimated average blood glucose in mg/dL and mmol/L (

AC Size (BTU) Calculator

Utility · Find the right air conditioner size in BTU and tons for any room in Sr

ACCA & CIMA Cost Calculator

Education · Add up the total official ACCA or CIMA body fees to qualify in Sri Lan

Accountancy Cost Calculator

Education · Add up the total official body fees to qualify as an accountant in Sri

Activation Function Calc

AI · Compute the common neural-network activation functions — ReLU, Leaky R

Adam Optimizer Calculator

Education · Compute one or more steps of the Adam optimizer from a gradient and th

Adjusted Rand Index Calc

AI · Compares two clusterings (or a clustering against ground-truth labels)

Admission Marks

Education · Estimate the marks your Grade 1 government school application will sco

Agrahara Insurance Calc

Finance · Work out exactly what the Agrahara scheme (NITF) reimburses for a hosp

Agrahara Registration Guide

Finance · Step-by-step guide to register for Agrahara insurance online at nitf.l

AI Agent Cost Calculator

AI · Estimate the real per-run, daily, and monthly cost of a multi-step LLM

AI Agent Framework Compare

AI · Compare the major LLM agent-building frameworks — LangGraph, LlamaInde

AI Agent Rules Generator

Developer · Generate a clean coding-agent instructions file from one short form —

AI Alt-Text Generator

AI · Drop an image and get a concise, WCAG-friendly alt-text string plus tw

AI API Cost Calculator

AI · Estimate the monthly and per-request USD and LKR bill for any major LL

AI API Error Code Lookup

Developer · Decode any OpenAI, Anthropic (Claude), or Google Gemini API error code

AI API Request Builder

AI · Build a ready-to-run curl, Python and Node.js request for the OpenAI,

AI API Usage Tier Lookup

AI · Look up the OpenAI and Anthropic paid usage-tier ladders — the cumulat

AI Audio Token Cost Calc

AI · Convert an audio clip's duration (or a measured audio_tokens count) in

AI Availability by Country

AI · Pick a country and instantly see which major AI chatbots — ChatGPT, Ge

AI Avatar Video Compare

AI · Compare AI talking-avatar / spokesperson video generators — HeyGen, Sy

AI Avatar Video Cost

AI · Compare the cost of AI avatar / talking-head videos across Synthesia,

AI Bot Blocker (robots.txt)

AI · Generate ready-to-paste robots.txt rules to block AI crawlers — GPTBot

AI Browser Compare

AI · Filterable comparison of agentic AI browsers — ChatGPT Atlas, Perplexi

AI Budget Calculator

AI · Enter a dollar budget, pick a model, and describe an average request —

AI Carbon Calculator

AI · Estimate the electricity, CO₂e, and water footprint of your ChatGPT, G

AI Chat Cost Calculator

AI · Estimate the real API cost of a multi-turn LLM chat. Because the whole

AI Chat Template Generator

AI · Wrap a system prompt and a multi-turn conversation in the exact specia

AI Chatbot Age Checker

Utility · Enter an age and country to see which AI chatbots — ChatGPT, Claude, G

AI Chatbot Cost Calculator

AI · Estimate the monthly API cost of a multi-turn AI chatbot across Claude

AI Chatbots in Sri Lanka

Utility · Check whether ChatGPT, Claude, Gemini, Copilot, Perplexity, Meta AI, D

AI Citation Generator

AI · Generate correctly formatted references and in-text citations for Chat

AI Code Execution Cost

AI · Compare the server-side code execution (code interpreter / sandbox con

AI Coding Assistant Compare

AI · Side-by-side comparison of the major AI coding assistants — Cursor, Gi

AI Coding Assistant Cost

AI · Compare the real monthly and annual cost of GitHub Copilot, Cursor, Cl

AI Content Rights Checker

AI · Find out who owns what you generate with AI — and whether you can use

AI Context Windows

AI · Compare the input context window of every current LLM — GPT-5, Claude,

AI Copyright Indemnity Check

AI · Find out whether your AI provider will legally defend you and pay the

AI Cost Per User

AI · Turn model token prices into LLM cost per active user, break-even subs

AI Cost Per Word

AI · Convert AI token pricing into cost per word, per page, and per article

AI Cover Letter Generator

Freelance · Generate a tailored, one-page professional cover letter for Sri Lankan

AI Credits Calculator

AI · Turn Midjourney, Runway, Suno, ElevenLabs and HeyGen credits into real

AI Data Privacy Compare

AI · Does ChatGPT, Claude, Gemini, Copilot, Meta AI, Grok, DeepSeek or Mist

AI Deep Research Compare

AI · Compare the five agentic AI deep-research modes — ChatGPT Deep Researc

AI Detector Comparison

AI · Compare GPTZero, Turnitin, Originality.ai, Copyleaks, Winston AI, Quil

AI Diagram Generator

AI · Describe your system, database or process in plain English and an AI a

AI Embedding Compare

AI · Compare popular text-embedding models (OpenAI, Cohere, Voyage, Google,

AI Embedding Generator

AI · Turn any text into its 384-dimension embedding vector with all-MiniLM-

AI Entity Recognizer

AI · Extract people, organisations, locations, and proper nouns from any En

AI Face Blur

AI · Detect and blur, pixelate, or black out every face in a photo — entire

AI Feature Support Matrix

AI · A caniuse-style capability matrix for LLM APIs: filter which productio

AI File Upload Limits

AI · Compare the exact file-upload limits of every major AI assistant — max

AI Flashcard Generator

AI · Turn pasted notes or any passage into study flashcards (Q&A, term–defi

AI Free Tier Compare

AI · Compare the free tier of every major LLM API — Gemini, Groq, Mistral,

AI GPU Comparison

AI · Compare the NVIDIA GPUs people use to run and fine-tune LLMs (RTX 3060

AI Grammar Checker

AI · Paste any English paragraph and get a corrected version side-by-side w

AI Hallucination Rates

AI · Compare how often leading LLMs hallucinate using the published Vectara

AI Hashtag Generator

AI · Generate ranked, copy-ready, platform-aware hashtags from any caption

AI Headshot Generators

AI · Compare the major AI headshot generators (Aragon AI, HeadshotPro, Bett

AI Image Cost Calculator

AI · Compare monthly cost of generating AI images across DALL-E 3, Imagen 3

AI Image Detector

AI · Check whether an image is AI-generated by reading its provenance metad

AI Image Edit Cost Calc

AI · Estimate the API cost of editing images with Gemini 2.5 Flash Image (N

AI Image Generator Compare

AI · Side-by-side comparison of the major AI image generators — Midjourney,

AI Image Prompt Gen

AI · Build copy-ready image-generation prompts for Midjourney, Stable Diffu

AI Image Size Calculator

AI · Find the exact, model-valid output dimensions for any AI image model —

AI Image to Prompt

AI · Upload any image and get copy-ready text-to-image prompts for Midjourn

AI Image Upscaler Compare

AI · Compare the main AI image upscalers — Topaz Gigapixel, Upscayl, Magnif

AI Inference Providers

AI · Compare the serverless open-model LLM API hosts — Together AI, Firewor

AI Inference Speed Calculator

AI · Estimate how fast an LLM will run on a given GPU — decode tokens/secon