Number Base Converter

Convert between Binary, Octal, Decimal, and Hexadecimal instantly.

Input Number

Binary (2)0b

Octal (8)0o

Decimal (10)

Hexadecimal (16)0x

About Number Bases

Binary (Base 2): Uses digits 0-1. Fundamental for computer systems.

Octal (Base 8): Uses digits 0-7. Common in Unix file permissions.

Decimal (Base 10): Uses digits 0-9. Standard number system for everyday use.

Hexadecimal (Base 16): Uses digits 0-9 and letters A-F. Widely used in programming and color codes.