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Dev Utilities

Number Base Converter

Enter a number in any base - binary, octal, decimal, or hexadecimal - and instantly see it converted into all four bases at once. Useful for programming, debugging, or learning how number systems relate to each other.

  • Files never leave your device
  • Runs entirely in your browser
  • Free, no account needed
Use Number Base Converter - free

Frequently asked questions

Which bases are supported?

Binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16).

What happens with invalid digits for a base?

The tool shows a clear error, for example if you enter 9 while the input base is set to binary.

Are negative numbers supported?

No, this version supports non-negative whole numbers only.

Convert number bases instantly - free.

Open Number Base Converter
  • Files never leave your device
  • No upload required
  • No account needed
  • Unlimited use, always free

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