Number Base Converter

Convert numbers between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16). Type in any field to convert instantly.

Common Values (click to load)

DecimalBinaryOctalHex
0000
10101012A
42101010522A
12711111111777F
25511111111377FF
1024100000000002000400
655351111111111111111177777FFFF

How to Use

  1. Type a number in any field (decimal, binary, octal, or hex).
  2. All other bases update instantly.
  3. Click bits in the binary visualization to toggle them on/off.
  4. Click example values in the table to load them.