How it works
The input is parsed as a non-negative integer in the selected source base. Large values beyond JavaScript safe integer precision should be checked separately.
parseInt(input, fromBase).toString(toBase).
Common questions
Are fractional numbers supported?
No. This tool is for integer base conversion.
Can it handle very large integers?
JavaScript safe integer limits apply; verify large identifiers with a BigInt-aware tool.
Independent developer utility. Review output before using it in production.