Binary Converter
Convert between binary, decimal, hexadecimal, and octal number systems instantly.
What is Binary?
Binary is a base-2 number system that uses only two digits: 0 and 1. It's the fundamental language of computers, where each digit (bit) represents an on/off state. Decimal (base-10) is the standard number system we use daily. Hexadecimal (base-16) uses digits 0-9 and letters A-F, commonly used in programming for colors and memory addresses. Octal (base-8) uses digits 0-7 and was historically used in computing. This tool converts between all four bases instantly in your browser.