Number Base Converter
Convert between binary, octal, decimal, and hex
Binary (Base 2)
11111111
Octal (Base 8)
377
Decimal (Base 10)
255
Hexadecimal (Base 16)
FF
Binary Visualization (8-bit groups)
Number Bases
Binary (Base 2): Uses 0 and 1. Fundamental for computers.
Octal (Base 8): Uses 0-7. Sometimes used in computing.
Decimal (Base 10): Uses 0-9. Standard human number system.
Hexadecimal (Base 16): Uses 0-9 and A-F. Common in programming.
Common Values
255 decimal = FF hex = 11111111 binary (max 8-bit value)
256 decimal = 100 hex = 100000000 binary
65535 decimal = FFFF hex (max 16-bit value)