FindWebTools

Number Base Converter

Convert numbers between binary, octal, decimal, hexadecimal and any base to 36.

Runs in your browser using BigInt — nothing is uploaded

How to use it

  1. Type a value in whichever base you have.
  2. Every other base updates as you type.

Questions

Can it handle very large numbers?
Yes. Conversion uses BigInt, so values far beyond the usual 64-bit limit stay exact rather than losing precision.
Does it support negative numbers or fractions?
Negative whole numbers, yes. Fractional values are not supported — base conversion of fractions is rarely exact and the rounding tends to mislead.

Related tools

JSON Formatter & Validator Format, minify and validate JSON, with the exact position of any error. JWT Decoder Decode a JSON Web Token to read its header and payload, and check expiry. Unix Timestamp Converter Convert Unix timestamps to readable dates and back, in local time or UTC. User Agent Parser Paste a User-Agent string to see the browser, engine, operating system and device type.