Free online tools
Simple, fast utilities that run entirely in your browser. No sign-up, and your data is never uploaded.
Word Counter
Count words, characters, sentences and reading time instantly.
Percentage Calculator
Work out percentages, percentage change and "what percent of" in one place.
JSON Formatter & Validator
Validate JSON, pretty-print it with indentation, or minify it. Errors show the position.
Text Case Converter
Convert text to UPPER, lower, Title, Sentence, camelCase, snake_case or kebab-case.
Loan & EMI Calculator
Estimate your monthly loan payment, total interest and total cost from amount, rate and term.
Password Generator
Generate strong random passwords in your browser using a cryptographically secure source.
Age Calculator
Find your exact age in years, months and days, and the days until your next birthday.
Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 back to text, with full Unicode support.
Unit Converter
Convert length, weight and temperature between metric and imperial units.
BMI Calculator
Calculate body mass index from height and weight in metric or imperial units.
Tip & Bill Split Calculator
Work out the tip, the total bill and each person's share when splitting a bill.
URL Encoder & Decoder
Percent-encode text for safe use in URLs, or decode percent-encoded text back to readable form.
Unix Timestamp Converter
Convert Unix timestamps to readable dates and dates back to timestamps.
Guides
How Percentage Change Works (With Examples)
A plain-English guide to percentage change, percentage points and the common mistakes people make.
How to Make a Strong Password You Can Actually Use
Practical advice on password length, passphrases, password managers and two-factor authentication.
What BMI Does (and Does Not) Tell You
How body mass index is calculated, what the ranges mean, and why it is only a rough screening number.