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Number Base Converter

Convert any non-negative integer between binary, octal, decimal, hexadecimal and Base64 representations. Powered by BigInt, so you can paste enormous values without losing precision.

n = 255·bits = 8·sign = positive
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How to use

  1. 01Type into any field — every other field updates instantly.
  2. 02Common prefixes (0x, 0b, 0o) and separators (_ , space) are accepted on input.
02

FAQ

Are negative numbers supported?
No, this tool focuses on non-negative integers (which is what most encoding contexts need). Two's-complement support may come later.
03

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