Number Base Converter

Convert between binary, decimal, hexadecimal, and octal number systems.

Number Systems Explained

SystemBaseDigits UsedUsed For
Binary20, 1Computers, digital electronics
Octal80-7Unix permissions, legacy systems
Decimal100-9Everyday counting
Hexadecimal160-9, A-FColors, memory addresses, programming

Common Conversions

DecimalBinaryOctalHex
0000
1111
81000108
10101012A
15111117F
16100002010
25511111111377FF
256100000000400100

Hex Color Codes

Hexadecimal is commonly used for colors in web design:

📱 Get Our Free App

Google Play