Number Base Converter

Convert numbers between binary, decimal, octal, and hexadecimal

Convert numbers between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16) instantly. Perfect for programmers, computer science students, or anyone working with different number systems. See all conversions at once with live updates as you type.

Enter Number in Any Base

Quick Reference (0-16)

Dec Bin Oct Hex

How to Use

  1. 1 Enter a number in any base (binary, octal, decimal, or hex)
  2. 2 Select the input base you're converting from
  3. 3 See instant conversions to all other bases
  4. 4 Copy any result for use in code, calculations, or learning
  5. 5 Use for programming, digital electronics, or computer science education