Percentage Error Calculator
Absolute percentage error = |measured − accepted| ÷ |accepted| × 100.
Inputs and units
- Measured value: Enter your value in the format and unit shown.
- Accepted value: Enter your value in the format and unit shown.
Calculation method
Absolute percentage error = |measured − accepted| ÷ |accepted| × 100.
Worked example
The example values are: Measured value = 98; Accepted value = 100
- Absolute percentage error: 2
- Signed relative error (%): -2
Assumptions and limitations
Check that the inputs and units describe your situation.
Using your result
Select Calculate after changing inputs. Copy result copies the displayed output; Download result saves a text file. Reset returns the form to its example inputs. Calculations run in your browser.
Percentage Error Calculator FAQs
What method does this calculator use?
Absolute percentage error = |measured − accepted| ÷ |accepted| × 100.
What should I check before using the result?
Check that the inputs and units describe your situation.