Free Online Tools for Everyday Tasks
Converters, calculators, text and developer utilities — fast, free and private. Everything runs in your browser, so your data never leaves your device.
Popular tools
Word Counter
Word Counter tallies words, characters (with and without spaces), sentences, paragraphs and estimated reading time as you type…
Case Converter
Case Converter switches any text between the letter cases writers and programmers actually use: UPPER and lower case, Title…
BMI Calculator
Body Mass Index (BMI) estimates body fat using your weight relative to your height.
Percentage Calculator
Three percentage questions cover almost any everyday need: “What is 15% of 80?”, “46 is what percent of 250?” and “What is the…
Age Calculator
This age calculator converts a date of birth into an exact age — not just whole years, but the precise years, months and days…
Kg to Lbs
This converter turns kilograms into pounds and back again — the everyday bridge between the metric and imperial weight systems.
Cm to Inches
This converter maps centimeters to inches and back — the conversion you need for screen sizes, waist measurements, furniture…
Celsius to Fahrenheit
This converter translates temperatures between Celsius and Fahrenheit — the daily math of weather forecasts, oven settings,…
JSON Formatter
Paste JSON and this tool tells you instantly whether it is valid — and if not, exactly where it breaks, with the error position.
Password Generator
This generator creates passwords from cryptographically secure randomness — the browser's crypto.getRandomValues, the same…
QR Code Generator
Type or paste any text or URL and this tool renders a scannable QR code instantly, downloadable as a crisp PNG.
Meter to Foot
This converter turns Meters (m) into Foots (ft) and back again — built for screen and paper sizes, furniture dimensions, body…
✍️ Text Tools
View all (5) →Word Counter
Word Counter tallies words, characters (with and without spaces), sentences, paragraphs and estimated reading time as you type…
Case Converter
Case Converter switches any text between the letter cases writers and programmers actually use: UPPER and lower case, Title…
Lorem Ipsum Generator
This generator produces Lorem Ipsum, the standard dummy text of the printing and typesetting industry since the 1500s.
Slug Generator
A slug is the human-readable part of a URL that identifies a page — for example /blog/how-to-brew-coffee.
Text Difference Checker
Paste two versions of a text and this tool highlights exactly what changed: lines only in the first text, lines only in the…
🧮 Calculators
View all (5) →BMI Calculator
Body Mass Index (BMI) estimates body fat using your weight relative to your height.
Percentage Calculator
Three percentage questions cover almost any everyday need: “What is 15% of 80?”, “46 is what percent of 250?” and “What is the…
Age Calculator
This age calculator converts a date of birth into an exact age — not just whole years, but the precise years, months and days…
Loan Calculator
This calculator works out the fixed monthly payment for an amortizing loan — a mortgage, car loan or personal loan where each…
Date Difference Calculator
This calculator measures the exact span between two calendar dates.
📐 Unit Converters
View all (4) →Kg to Lbs
This converter turns kilograms into pounds and back again — the everyday bridge between the metric and imperial weight systems.
Cm to Inches
This converter maps centimeters to inches and back — the conversion you need for screen sizes, waist measurements, furniture…
Celsius to Fahrenheit
This converter translates temperatures between Celsius and Fahrenheit — the daily math of weather forecasts, oven settings,…
Meter to Foot
This converter turns Meters (m) into Foots (ft) and back again — built for screen and paper sizes, furniture dimensions, body…
⌨️ Developer Tools
View all (4) →JSON Formatter
Paste JSON and this tool tells you instantly whether it is valid — and if not, exactly where it breaks, with the error position.
Base64 Encoder / Decoder
Base64 represents binary data using 64 safe ASCII characters, which is how emails attach files, JSON carries binary blobs and…
URL Encoder / Decoder
URLs may only contain a limited set of ASCII characters, so spaces, accents and symbols are written as %XX percent-escapes.
Hash Generator
A hash function turns any input into a fixed-length fingerprint that is easy to compute and practically impossible to reverse.
🎲 Generators
View all (2) →Why AllKit?
Most online tool sites upload your files to their servers, cap how often you can use them, or bury the tool behind sign-up walls and ads. AllKit takes the opposite approach: every tool here runs entirely inside your own browser using plain JavaScript and the Web Crypto API. Your text, numbers and files are processed on your device and transmitted nowhere.
That makes AllKit faster (there is no upload round-trip), safer for confidential content, and free to use without limits — no account, no watermark, no daily quota. Bookmark the tools you use most; once a page is loaded it keeps working even if your connection drops.