Base-N Number Converter

Convert numbers between any bases (binary, octal, decimal, hex). Free online base converter.

The Base-N Number Converter transforms numbers between any numerical bases from 2 to 36. Convert between binary (base 2), octal (base 8), decimal (base 10), hexadecimal (base 16), or any other base. Essential for computer science, digital electronics, and understanding number representation systems.

Common use cases

  • Programming and debugging
  • Digital electronics design
  • Computer science education
  • Hexadecimal color codes
  • IP address manipulation

How to use

  1. Enter the number to convert
  2. Select the source base (2-36)
  3. Select the target base (2-36)
  4. Click convert for the result
  5. See conversions to common bases

FAQ

What are common number bases?

Binary (2): computers. Octal (8): Unix permissions. Decimal (10): everyday. Hexadecimal (16): colors, memory addresses.

How do bases above 10 work?

Letters represent values: A=10, B=11, ..., Z=35. So base 16 uses 0-9 and A-F.

How do I convert decimal to binary?

Repeatedly divide by 2 and record remainders. Read remainders backward. 13 = 1101 in binary.

Why is hexadecimal used in computing?

Each hex digit represents exactly 4 binary digits, making it a compact way to write binary values.