Number Base Converter
Type a number in any base, binary, octal, decimal, or hexadecimal, and see it instantly converted to the other three.
Supports arbitrarily large integers via BigInt. Negative numbers and decimals aren't supported.
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Frequently asked questions
Does it support negative numbers or decimals?+
No, only non-negative whole numbers are supported across all four bases.
How large a number can it handle?+
Arbitrarily large, since conversion uses JavaScript's BigInt rather than standard fixed-precision numbers.
Can I type a number with a 0x or 0b prefix?+
No, just type the digits for that base; the field labels already tell you which base each box expects.