Number Base Converter
Number to Convert
Input Base
Binary (Base 2)
Octal (Base 8)
Decimal (Base 10)
Hexadecimal (Base 16)
Actions
Convert
Converted Values
Binary (Base 2)
Uses digits: 0-1
N/A
Octal (Base 8)
Uses digits: 0-7
N/A
Decimal (Base 10)
Uses digits: 0-9
N/A
Base Calculator
+
-
×
÷
Base 2
Base 8
Base 10
Base 16
Calculate
Add Custom Base
Sample Numbers
Decimal 255
Hexadecimal FF
Binary 11111111
Octal 377
Base Information
Binary (Base 2):
Uses digits 0-1
Octal (Base 8):
Uses digits 0-7
Decimal (Base 10):
Uses digits 0-9
Hexadecimal (Base 16):
Uses digits 0-9, A-F
You can add custom bases from 2 to 36. Bases higher than 10 use letters A-Z for digits 10-35.