Number Base Converter — Binary, Octal, Decimal & Hex

Type a number in any base and see binary, octal, decimal, and hex update live. Supports large integers via BigInt. Runs in your browser — no signup needed.

Keywords: number base converter, binary to decimal, hex to decimal, decimal to binary, octal converter, base conversion

Frequently Asked Questions

Which number bases are supported?

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

Does it handle negative numbers?

The converter works with non-negative integers. Negative number support depends on the base representation used.

Is there a size limit on the number?

Very large numbers are supported using JavaScript's BigInt where needed.