Base Converter
Convert numbers between any bases.
Enter your values
ⓘ Live results
Results
- Base 16
- FF
- Decimal
- 255
- Binary
- 11111111
- Octal
- 377
- Hexadecimal
- FF
Quick answer
Changing base rewrites the same quantity using a different set of digits; the value is unchanged.
How to use the Base Converter
- 1Type the number using digits valid for its base.
- 2Select the base it is currently written in.
- 3Enter the target base (2–36).
Worked example
Using the values the calculator loads with:
Inputs
- Number255
- From baseDecimal (10)
- To base16
Results
- Base 16FF
- Decimal255
- Binary11111111
- Octal377
- HexadecimalFF
Frequently asked questions
Why is hex used in computing?
One hex digit maps exactly to four bits, making binary compact and readable.
Can it handle decimals?
This tool converts whole numbers only.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.