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Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal instantly in your browser.

Result

11111111

How to use

  1. 1

    Enter a value

    Type digits valid for the source base (0–9, A–F for hex).

  2. 2

    Select bases

    Choose source and target bases: binary, octal, decimal, or hexadecimal.

  3. 3

    Copy result

    The converted value appears instantly.

Frequently Asked Questions

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

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