Explore our complete collection of 202 free online tools. No signup, no installation — all tools work in your browser.
Format and validate XML documents
Format and validate YAML files
Convert Markdown text to clean HTML code
Convert CSV data to JSON format
Convert JSON data to CSV format
Convert SQL CREATE TABLE statements or queries to JSON
Send HTTP requests and test API endpoints
Decode and inspect JWT tokens
Build and validate cron expressions for scheduled tasks
Decode HTML entities and special characters back to readable text
Convert colors between HEX, RGB, HSL, and other formats
Calculate tips and split bills quickly
Calculate Equated Monthly Installments for loans
Calculate compound interest on investments and savings
Calculate returns on Systematic Investment Plans
Add, subtract, and convert time values
Calculate the difference between dates or add days to a date
Test how strong your passwords are
Calculate the heat index from temperature and humidity
Trim and cut audio files to any length
Combine multiple audio files into one track
Convert audio files between different formats
Change the playback speed of audio files
Increase or decrease audio volume levels