Number Base Converter
Convert integer values between bases using browser BigInt for large numbers.
Result
255
All conversion happens locally in your browser. The value you enter is not sent to a server, logged, stored, or transmitted.
How to use this tool
Enter the required values in the labeled fields. Results update in your browser and are announced for assistive technologies. Use realistic measurements and verify important outcomes before acting on them.
Formula or logic
Input is validated against the source base, parsed as an integer, then rendered in the target base. Floating-point numbers are not supported for base conversion.
Example calculation
Example: FF in base 16 equals 255 in base 10.
Frequently asked questions
Does it support very large numbers?
Yes, integer conversion uses BigInt where possible.
Are decimals supported?
No. The browser-only version supports integers only.
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