Number Base Converter

Binary (base 2), Octal (base 8), Decimal (base 10), and Hexadecimal (base 16). Edit any field and the others update automatically.

Yes — the converter uses BigInt internally, so it handles arbitrarily large integers without losing precision.

If you enter characters that are not valid for the selected base (e.g. '9' in binary), the other fields will show an error indicator instead of crashing.

Currently this tool handles non-negative integers. For signed representations like two's complement, enter the unsigned bit pattern directly.

Yes — all conversions happen in your browser with zero network requests.