Percentage Error Calculator
Find absolute and percent error from an actual vs theoretical value. Free percent error formula tool.
Parameters
Enter the required details below
Ready to Calculate
Enter your parameters and click calculate to see the results here.
How to Use
- Enter Actual Value.
- Enter Theoretical Value.
- Click Calculate to see Error and Percentage Error.
- Check the result. Use Reset if you want to try different numbers.
About This Calculator
Percent error measures how far an experimental or measured value sits from a known theoretical value: |actual − theoretical| / |theoretical| × 100.
Percent error
% error = |actual − theoretical| / |theoretical| × 100
Measured 9.8 against 10 → 2% error.
Frequently asked questions
What is the percentage error formula?+
Divide the absolute difference by the absolute theoretical value, then multiply by 100. Theoretical (accepted) value must not be zero.
Is Percentage Error Calculator free to use?+
Yes. Percentage Error Calculator is free and does not require an account. The calculation runs in your browser.
Related Calculators
Related Topics
percentage errorpercent error calculatorerrormathstatistics