How it works
Multiply each digit by 16 raised to its position power and sum, starting from the right at 16⁰.
How to use Hex to Decimal Converter
- Type hex digits; include 0x if you like.
- Read decimal result.
- Cross-check with decimal-to-hex.
Worked examples
Concrete numbers and cases you can check against the tool above.
0xFF
15×16 + 15 = 255 — max unsigned byte.
When to use Hex to Decimal Converter
Log files and color pickers show hex; budgets and spreadsheets often need decimal. Quick conversion avoids manual 16^n arithmetic.
Common use cases
- Interpret 0x2A as decimal 42 in protocol docs.
- Sum color channel hex values for accessibility checks in decimal tools.
Inputs and outputs
- Hex integers with digits 0–9 and A–F
Privacy
This tool runs entirely in your browser. Your data never leaves your device — nothing is uploaded to our servers.
Frequently asked questions
- Invalid letters?
- G–Z are invalid in hex and should trigger an error.
- Fractional hex?
- Standard integer parser stops at the radix point.
- Big addresses?
- Very long hex may exceed safe integer range in the browser.