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Number Base Converter

Binary, octal, decimal, hex and any base up to 36, any size.

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Runs locally in your browser. Your files are never uploaded.

About this tool

Convert integers of any size between binary, octal, decimal, hexadecimal and custom bases. It also shows two's-complement forms for 8, 16, 32 and 64 bits.

How to use it

  1. Type a number in any field.
  2. All other bases update instantly.
  3. Copy the result.