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Number Base Converter

Convert numbers between binary, octal, decimal, hex, base-32, and base-64.

Accepts 0x, 0b, and 0o prefixes and ignores whitespace. Uses BigInt arithmetic, so any size is exact. Signed and byte views apply to 32-bit values only; bitwise operations always run on unsigned 32-bit semantics (SHR is a logical shift).

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Convert numbers between binary, octal, decimal, hexadecimal, base-32, and base-64. See 32-bit byte breakdowns and signed integer interpretations.

>[x]Features
  • -Convert between bases 2, 8, 10, 16, 32, and 64
  • -Accepts 0x, 0b, and 0o prefixes and whitespace
  • -32-bit byte view for hexadecimal values
  • -Signed int32 interpretation for decimal
  • -One-click copy for every result
  • -Runs entirely in your browser
>>Use Cases
  • >Reading hex color codes and bit flags in decimal
  • >Converting memory addresses and offsets
  • >Decoding binary protocol fields
  • >Preparing literals for different programming languages

Frequently Asked Questions

>What bases are supported??
Binary (2), octal (8), decimal (10), hexadecimal (16), base-32, and base-64. You can convert between any of them.
>How large can the numbers be??
JavaScript integers are exact up to 2^53. Above that, conversions may lose precision: decimal arithmetic libraries are not bundled.