Converters
Number Base Converter
Convert numbers between decimal, binary, hexadecimal, and octal. Also supports custom bases from 2 to 36.
Conversions
Binary
0b11111111Octal
0o377Decimal
255Hexadecimal
0xFFHow to use Number Base Converter
1
Enter a number
Type a number in the input field.
2
Select its base
Choose the base of the number you entered (Binary, Octal, Decimal, or Hexadecimal).
3
See instant conversions
All base conversions are shown simultaneously. Use the copy button to copy any result.
Frequently Asked Questions
What bases are supported?
Binary (base 2), Octal (base 8), Decimal (base 10), and Hexadecimal (base 16).
Are negative numbers supported?
This tool handles positive integers. For signed integers, use two's complement representation.