Number Base Converter

How to Use

1. Enter a number and select its current base (binary, octal, decimal, or hexadecimal).
2. The same value is shown converted into all four bases at once.
3. Copy any of the converted values with one click.

About Number Bases

A number base (radix) determines how many unique digits are used to represent values. Binary (base 2) uses only 0 and 1 and is the native format computers use internally. Octal (base 8) and hexadecimal (base 16, using 0-9 and A-F) are compact ways to represent binary data — each hex digit corresponds to exactly 4 binary bits. Decimal (base 10) is the everyday number system.

Common Uses

• Converting a hex color code or memory address to decimal for calculations.
• Understanding binary representations when learning programming or computer science.
• Converting file permission values (octal) used in Unix/Linux systems.