Developer

Number Base Converter

Convert between binary, octal, decimal, and hex.

100% free · runs in your browser · nothing is uploaded.

Why use this tool

  • 100% free, forever
  • No sign-up or login
  • Runs entirely in your browser
  • Your files never leave your device
  • Unlimited use, no watermarks
  • Works on desktop and mobile

How to use Number Base Converter

  1. 1

    Open Number Base Converter — it loads instantly in your browser.

  2. 2

    Enter or upload your input and adjust any available options.

  3. 3

    Copy or download your result. Nothing is uploaded.

Enter a number in any base and see it in binary, octal, decimal, and hexadecimal — with arbitrary-precision support.

Frequently asked questions

Yes — Number Base Converter is completely free, with no sign-up, no usage limits, and no watermarks.

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