How to use this percent error calculator
Enter the values requested above and select Calculate. Change any input to compare another scenario. The calculation runs locally in your browser and does not require an account.
Formula and method
Example
If a measured value is 9.8 and the accepted value is 10, percent error is 2%.
Tips for a useful result
Percent error uses the accepted value as the reference denominator.
What this calculator is useful for
Calculate percent error between an experimental or measured value and an accepted value. The result is intended for quick estimates, checking arithmetic and comparing scenarios. When a result affects a contract, tax filing, medical decision, building-code requirement or other high-stakes situation, verify the result with the appropriate professional or authoritative source.
Frequently asked questions
What does the Percent Error Calculator calculate?
Calculate percent error between an experimental or measured value and an accepted value.
How does the Percent Error Calculator work?
Percent error = |experimental − accepted| ÷ |accepted| × 100%.
Is the Percent Error Calculator free to use?
Yes. ERICH Calculators is free to use and does not require an account.