Number Base Converter

Type in any field and all other bases update instantly. Supports arbitrarily large numbers.

Binary (Base 2)

Octal (Base 8)

Decimal (Base 10)

Hexadecimal (Base 16)

Quick Examples

About Number Base Converter

Number Base Converter translates numbers between the four most common numeral systems: binary (base-2), octal (base-8), decimal (base-10), and hexadecimal (base-16). Enter a number in any base and instantly see the equivalent in all others.

Different number bases are used throughout computing: hexadecimal for memory addresses and color codes, binary for bit manipulation, octal for Unix permissions. Understanding base conversion is foundational in computer science.

Also shows the calculation steps so you can understand how the conversion works.

Features

✓Convert between binary, octal, decimal, and hexadecimal
✓Enter in any base, see all equivalents
✓Supports large numbers
✓Shows conversion steps

Common Use Cases

→Converting hex color codes to decimal RGB values
→Understanding binary representation of numbers
→Working with Unix octal permission values
→Learning number base systems for computer science