Hex to Decimal Converter
Convert a hexadecimal number into its decimal value.
How to use Hex to Decimal Converter
1. Enter Hexadecimal Value. 2. Hex digits are case-insensitive with an optional 0x prefix and sign. Exact integer arithmetic is used; no fixed-width signed-machine interpretation is assumed. 3. Select Convert or press Enter. 4. Select Copy result to copy the answer, or Reset to clear the form and result.
Why use this tool?
Hex digits are case-insensitive with an optional 0x prefix and sign. Exact integer arithmetic is used; no fixed-width signed-machine interpretation is assumed.
How the calculation works
Interpret a signed hexadecimal whole numeral and output base 10. Hex digits are case-insensitive with an optional 0x prefix and sign. Exact integer arithmetic is used; no fixed-width signed-machine interpretation is assumed. Counts and dimensions use the declared rounding convention; other numbers display up to three decimal places where applicable. Nonzero subsecond durations are labelled. Durations round to the nearest second; nonzero subsecond durations are labelled. File-size output units are decimal. Changing an input label does not convert filled values.
Example
Worked example: Hexadecimal Value = "FF". Result: 255.
Practical tip
Check the input labels and assumptions against the hex to decimal task before reusing the number.
Frequently asked questions
What exactly does Hex to Decimal Converter calculate?
Interpret a signed hexadecimal whole numeral and output base 10.
Which units or counting rules apply?
Hex digits are case-insensitive with an optional 0x prefix and sign. Exact integer arithmetic is used; no fixed-width signed-machine interpretation is assumed.
Does this inspect, change or upload my files?
This page calculates the entered values or text in the browser. Numeric image/media tools do not transform files. Check the worked example and stated counting basis; the result does not certify device, search-engine or accessibility outcomes.