Number System Converter

Convert numbers between decimal, binary, octal and hexadecimal.

Convert any integer between bases 2, 8, 10 and 16 (and up to base 36) with arbitrary precision using BigInt.

Related tools

Bytes/Bits ConverterConvert between bytes, kilobytes, megabits and other units.Case ConverterConvert text between lowercase, UPPERCASE, Title Case and more.

Frequently asked questions

What is hexadecimal?

Base 16, using digits 0-9 and A-F. Each hex digit represents four binary bits.