Free Online Tools

Fast, free tools — no sign up, no limits.

Developer Tools

Format, validate and beautify JSON data online. Free JSON formatter and validator tool.

Encode and decode Base64 strings online. Fast, free Base64 converter tool.

Encode or decode URLs and query strings. Free online URL encoder decoder tool.

Convert HEX color codes to RGB values instantly. Free online HEX to RGB converter — also converts RGB back to HEX with live color preview.

Generate strong, secure random passwords instantly. Free online password generator tool.

Create QR codes for URLs, text, or contact info. Free online QR code generator.

Count words, characters, sentences and paragraphs instantly. Free online word counter and text analyzer tool.

Calculate monthly loan payments, total interest, and amortization schedule online. Free loan payment calculator.

Calculate your Body Mass Index (BMI) instantly. Supports metric and imperial units with healthy weight range guidance.

Calculate compound interest with monthly contributions. See future value, total interest earned, and year-by-year growth.

Calculate your daily calorie needs using the Mifflin-St Jeor formula. Get BMR, TDEE, and macros for weight loss or gain.

Calculate your exact age in years, months, and days. Find total days, weeks, months lived and days until next birthday.

Convert Celsius to Fahrenheit or Fahrenheit to Celsius instantly. Free online temperature converter with common reference points.

Calculate how your savings grow over time with interest. Set a goal, enter monthly contributions, and see year-by-year balance projections.

Generate random person names, fantasy names, and usernames instantly. Free online name generator for characters, games, and creative projects.