Base Converter

Enter any number and its base to instantly convert it to binary, octal, decimal, hex, and any custom base between 2 and 36. Free, no signup required.

Number base conversion is fundamental in programming and computer science. Binary (base 2) is used internally by all computers, hex (base 16) is common in memory addresses and color codes, and octal (base 8) appears in Unix file permissions. This free converter handles any base from 2 to 36.