Number Base Converter

Convert integers between binary, octal, decimal, and hex

Convert numbers between binary, octal, decimal, and hexadecimal — big integers supported, all in your browser.

Also known as: binary converter · hex converter · decimal to binary · octal converter

100% In-Browser & Private — your data never leaves this device
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How to use the Number Base Converter

  1. Enter a value in any supported base (prefix 0x for hex, 0b for binary).
  2. Review equivalent forms in binary, octal, decimal, and hexadecimal.
  3. Copy any representation.

FAQ

Are negative numbers supported?
Yes — two's complement representation is shown for signed interpretations.
Is my input sent anywhere?
No. Conversion runs entirely in your browser.
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