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Number Base Converter

Convert between binary, octal, decimal, and hexadecimal numbers

Binary (Base 2)
Octal (Base 8)
Decimal (Base 10)
Hexadecimal (Base 16)
About Number Bases
Binary (Base 2)

Foundation of computers. Uses only 0 and 1

e.g., 1010 = 10
Octal (Base 8)

Uses digits 0-7

e.g., 12 = 10
Decimal (Base 10)

Everyday numbers using digits 0-9

e.g., 10 = 10
Hexadecimal (Base 16)

Uses 0-9 and A-F. Common for color codes

e.g., A = 10

Enter a number in any field to automatically convert it to other number systems. Useful for programming, computer science, and digital circuit design.