Base Converter
CalculatorsConvert numbers between decimal, hexadecimal, octal, and binary bases with auto-detect.
How to Use
1
Enter a value
Type any number — e.g. 255, 0xFF, 0b11111111, 0o377 — and the tool auto-detects its base.
2
Select base (optional)
Override auto-detect by picking Decimal, Hexadecimal, Octal, or Binary manually.
3
Read the results
See the number converted across all four bases at once.