Number Base Converter
Convert numbers between binary, octal, decimal, hex, and arbitrary bases 2–36.
Base
🔒 Runs entirely in your browser.
About this tool
Uses BigInt under the hood so it handles values well beyond Number.MAX_SAFE_INTEGER. Negative numbers are supported. The arbitrary-base field accepts radixes from 2 to 36; digits above 9 use letters a–z.
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