Calculate percentages easily for discounts, taxes, growth rates, and more. Solve common percentage problems with this free online tool.

A precise online stopwatch with lap time recording. Track time with millisecond accuracy, record splits, and analyze your timing data.

A comprehensive list of currencies used across countries and regions worldwide, including symbols, units, and exchange rates.

Compare two texts side by side, detect differences at the character level, and sync scrolling for easy review.

Convert between numeric RMB amounts and their formal Chinese written equivalents. Essential for financial documents, invoices and checks.

Add rounded corners or make your images circular with this free online tool. Perfect for profile pictures, thumbnails, and social media posts.

Adjustable brush colors & sizes, smooth drawing & eraser, download as PNG/JPEG. Perfect for quick sketches, doodles, and digital art!

Instantly convert table data between CSV and JSON formats in your browser. Supports custom delimiters, headers, and table formatting.