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

A/L Combination Validator

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

Case Converter

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

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

Random Name Generator

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

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

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

.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

A/B Test Significance

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

A1C Calculator

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

Accountancy Cost Calculator

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

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

Age Calculator

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

Agrahara Insurance Calc

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

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 Audio Token Cost Calc

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

AI Audio Transcriber

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

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 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 Template Generator

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

AI Chatbot Cost Calculator

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

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 Context Windows

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

AI Cost Per Word

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

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 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 Entity Recognizer

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

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 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 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 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

AI JSON Repair

AI · Paste the malformed JSON an LLM returned — Markdown fences, trailing c

AI Keyword Extractor

AI · Extract the most important keywords and key phrases from any text. Run

AI Knowledge Cutoff

AI · Look up any major LLM's training-data knowledge cutoff and release dat

AI LLM License Checker

AI · Check in plain English whether Llama, Mistral, Gemma, Qwen, DeepSeek,

AI Max Output Tokens

AI · Look up the maximum output (completion) tokens for every current LLM —

AI Message Limit Calculator

AI · Work out how many messages you can send on ChatGPT, Claude, Gemini, Gr

AI Model Card Generator

AI · Generate a complete, Hub-valid Hugging Face model card (README.md) fro

AI Model Compare

AI · Compare the latest LLMs side by side — GPT-5, Claude 4.5, Gemini 2.5,

AI Model Deprecation Tracker

AI · Check whether the OpenAI, Anthropic, Google, or Azure model you call i

AI Model ID Cheat Sheet

AI · The exact API model identifier strings for OpenAI, Anthropic, Google G

AI Model Size Calculator

AI · Calculate the exact on-disk file size of any LLM at FP32, FP16, 8-bit,

AI Multimodal Compare

AI · See which AI models support vision, audio, video and PDF input through

AI Music Cost Calculator

AI · Compare what it costs to generate AI music each month across Suno, Udi

AI Music Generator Compare

AI · Side-by-side comparison of the major AI music generators — Suno, Udio,

AI Note-Taker Comparison

AI · Compare the major AI meeting note-takers (Otter, Fireflies, Fathom, Gr

AI Object Detector

AI · Detect objects in any image with labelled bounding boxes — class names

AI OCR Cost Calculator

AI · Compare the monthly cost of document OCR across AWS Textract, Google D

AI Parameter Count Calc

AI · Compute the exact parameter count of a decoder-only (GPT-style) transf

AI PII Redactor

AI · Detect and redact PII — Sri Lanka NIC numbers, phones, emails, credit

AI Plan Comparison

AI · Compare the paid consumer plans of ChatGPT, Claude, Gemini, Grok and P

AI Presentation Maker

AI · Describe your topic and get a designed, editable presentation: AI plan

AI Prompt Library

AI · 48 structured, source-cited prompt templates for ChatGPT, Claude, Gemi

AI Question Answering

AI · Paste any English passage and ask a question — the tool returns the ex

AI Rate Limit Calculator

AI · Computes whether an LLM workload will hit OpenAI, Anthropic, or Gemini

AI Reasoning Model Compare

AI · Side-by-side comparison of the major AI reasoning models — OpenAI o3 &

AI Resume ATS Checker

AI · Paste a resume and a job description to see an ATS score, missing keyw

AI robots.txt Generator

AI · Generate a ready-to-paste robots.txt block that allows or blocks speci

AI Search Compare

AI · Compare the major consumer AI answer engines — Perplexity, ChatGPT Sea

AI Similarity Checker

AI · Compare two texts and get a 0–100% semantic similarity score from sent

AI Subscription Cost

AI · Add up what you pay for ChatGPT, Claude, Gemini, Perplexity, Copilot,

AI Subscription Price (LKR)

AI · Find the real Sri Lankan rupee price of ChatGPT Plus, Claude Pro, Gemi

AI Temperature Calc

AI · Interactive visualizer for LLM temperature, top-p (nucleus), and top-k

AI Text Chunker

AI · Split long text into token-sized, optionally overlapping chunks for RA

AI Token Counter

AI · Count tokens for any text against GPT-5, GPT-4o, Claude 4.x, Gemini 3,

AI Tokenizer Visualizer

AI · Paste any text and watch it split into the exact tokens GPT-4o, GPT-5

AI Tool Schema Generator

Developer · Turn a named function and its typed parameters into a ready-to-paste t

AI Translation Cost Calc

AI · Estimate and compare the USD and LKR cost of machine-translating text

AI Translator

AI · Translate English ↔ Sinhala, English ↔ Tamil, and 50+ other language p

AI TTS Cost Calculator

AI · Compare AI text-to-speech costs in USD and LKR across OpenAI TTS, Elev

AI Video Cost Calculator

AI · Compare the cost of generating AI video across Sora 2, Veo 3, Runway G

AI Video Generator Compare

AI · Compare Sora 2, Veo 3, Runway, Kling, Pika, Luma, Hailuo, Firefly and

AI Video Token Cost Calc

AI · Estimate how many input tokens a video costs when you send it into a m

AI Vision Token Calculator

AI · Calculate how many tokens an image costs on GPT-4o, GPT-4o mini, Claud

AI Voice Agent Cost

AI · Estimate the real per-minute and monthly cost of a cascaded AI voice a

AI Web Search Cost

AI · Estimate the true monthly cost of LLM web search — the per-search/grou