Number Base Converter
Binary (Base 2)
11111111
Octal (Base 8)
377
Decimal (Base 10)
255
Hexadecimal (Base 16)
FF
How to Convert Number Bases
Number base conversion is fundamental in computer science and programming. The four most common bases are binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16).
Why Different Bases?
Computers work in binary (0s and 1s). Hexadecimal is a compact way to represent binary data, used in color codes (#FF0000), memory addresses, and more. Octal was historically used in Unix file permissions.
Frequently Asked Questions
What is hexadecimal?
Hexadecimal is a base-16 number system using digits 0-9 and letters A-F. It is commonly used in computing for colors, memory addresses, and data representation.
How do I read binary?
Each binary digit represents a power of 2 from right to left: 1, 2, 4, 8, 16... So binary 1010 = 8+0+2+0 = 10 in decimal.