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Number base converter
Convert integers between binary, decimal, octal, and hex.
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How to use number base converter
Enter an integer, choose its source and destination bases, and convert.
Things worth knowing
Uses BigInt for exact integer conversion. Fractions are not supported. Enter digits without prefixes such as 0x.
Is my input saved or uploaded?
Your input is processed locally and is not saved by this site. Reloading or leaving the page clears your work. Copy or download anything you want to keep. Only saved and recent tool IDs are stored on this device.