Binary Converter is a free, fast, no-signup tool for converting between text, binary, decimal, hexadecimal, and octal — in any direction. Type or paste into one box and the converted result appears instantly in the other.

WHAT YOU CAN DO

• Convert text to binary and binary to text (ASCII), UTF-8 safe

• Convert binary to decimal, decimal to binary, hex, and octal — any base to any base

• Use the base converter: enter a number once and see it in all four bases at the same time

• Use the binary calculator to add, subtract, multiply, or divide binary numbers, with results shown in both binary and decimal

PRIVATE AND OFFLINE

Everything runs locally in your browser. Nothing you type is uploaded, stored, or shared. There are no servers, no accounts, no tracking, and no limits on length.

WHO IT'S FOR

Students checking homework, developers reading bit patterns, and anyone decoding a binary message. It's simple enough for beginners and quick enough for daily use.

Also available as a browser extension for Chrome, Edge, and Firefox. Learn more and use the full toolkit at