Calculate percent error between an experimental or measured value and an accepted value.
Percentage change, discounts, tax, tips and everyday percent-of-number questions.
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.
If a measured value is 9.8 and the accepted value is 10, percent error is 2%.
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.
If the measured value is 9.8 and the accepted value is 10, absolute error is |9.8 − 10| = 0.2. Percent error is 0.2 ÷ 10 × 100 = 2%.
When to use it: percent error needs an accepted or theoretical reference value, and that reference cannot be zero. If neither value is the accepted reference, a percent difference calculator is usually the better choice.
Calculate percent error between an experimental or measured value and an accepted value.
Percent error = |experimental − accepted| ÷ |accepted| × 100%.
Yes. ERICH Calculators is free to use and does not require an account.
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