Free Number System Converter

Convert between binary (base-2), octal (base-8), decimal (base-10) and hexadecimal (base-16) number systems instantly.

🔄 Number System Converter

Input Number

Select 'Binary (Base 2)', enter your binary number (e.g. 1010), and the decimal result appears automatically. 1010 in binary = 10 in decimal.

Hexadecimal (base-16) is used in computing for memory addresses, colour codes (#FF0000), HTML/CSS values, and assembly language programming.

Currently the tool converts positive integers only. Negative binary (two's complement) conversion is on our roadmap.

Convert any unit

HEX RGB HSL

Format JSON data