What bases are supported?

Binary (base-2), octal (base-8), decimal (base-10), and hexadecimal (base-16).

Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal bases. Free online base converter for programmers and computer science students.

✓ Free • No Signup • Client-Side Only

Convert numbers between binary, octal, decimal, and hexadecimal instantly. Enter a number and see the conversion in all bases simultaneously.

Enter a number: Source base:

Results:

Binary output

Octal output

Decimal output

Hexadecimal output