Free web tools
Converters, calculators, and text, security and image utilities. Everything runs in your browser — nothing you type or upload leaves your device.
Calculators 5 tools
Percentage Calculator
Percent of a number, percent change, discount price, and tip splitting - five common questions in one tool.
Compound Interest Calculator
See how savings grow over time with regular contributions and compound interest.
Loan Calculator
Estimate the monthly payment, total cost and total interest on a fixed-rate loan.
Age Calculator
Work out an exact age in years, months and days, plus the countdown to the next birthday.
BMI Calculator
Calculate Body Mass Index from height and weight, with the WHO category and a healthy-weight range.
Converters 3 tools
Unit Converter
Convert length, weight, temperature, area, volume, speed, time, pressure, energy and data - instantly, in your browser.
Unix Timestamp Converter
Convert Unix time (epoch seconds or milliseconds) to a readable date, or a date to a timestamp, instantly in your browser.
Currency Converter
Convert between 150+ currencies using up-to-date reference exchange rates.
Text & data 5 tools
Word & Character Counter
Live word, character, sentence and reading-time counts as you type.
Base64 Encoder / Decoder
Convert text to Base64 and back, with full Unicode support, in your browser.
Text Case Converter
Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and more.
JSON Formatter & Validator
Pretty-print, minify and check JSON for errors - locally, nothing uploaded.
URL Encoder / Decoder
Percent-encode text for safe use in URLs, or decode an encoded URL back to readable text.
Generators 10 tools
Lorem Ipsum Generator
Generate paragraphs, sentences or words of classic Lorem Ipsum filler text.
Random Number Generator
Pick fair random numbers in any range, with an option for no repeats.
UUID Generator
Generate random version-4 UUIDs (GUIDs), one or in bulk, instantly in your browser.
QR Code Generator
Turn any text or URL into a scannable QR code and download it as a PNG - instantly in your browser.
CPF Generator
Generate valid random CPF numbers with correct check digits, for testing forms and validation logic.
CNPJ Generator
Generate valid random CNPJ numbers with correct check digits, for testing forms and validation logic.
Test Credit Card Number Generator
Generate Luhn-valid fake card numbers, expiry dates and CVVs for testing payment forms.
Fake Person Generator (Brazil)
Generate a complete fake Brazilian profile: name, CPF, RG, address, phone and email, for testing.
LinkedIn Search URL Builder
Turn a target profile into a ready-to-open LinkedIn people-search link with the filters already applied.
GitHub Repository Finder
Find the top open-source projects for any topic and language, ranked by stars, forks or recent activity.
Security 2 tools
Media 8 tools
Image Resizer & Compressor
Shrink one photo or a whole batch to a target width and quality without uploading them anywhere.
Color Converter
Paste a colour in any common format and get HEX, RGB and HSL, with a live swatch.
Android Launcher Icon Generator
Turn text, an emoji or an image into a full set of Android launcher icons, ready to drop into your project.
Icon Library and Downloader
Search hundreds of thousands of open-source icons, recolour them and download SVG or PNG.
Background Remover
Cut out a plain or evenly-lit background and download a transparent PNG - no upload, no sign-up.
Photo Enhancer
Fix exposure and colour, sharpen, or one-click auto-enhance a photo - all in your browser.
Photo Collage Maker
Drop a few photos into a grid, set the spacing and shape, and download the collage as a PNG.
AI Image Generator
Describe a picture and get an AI-generated image you can download, using a free public service.