Percent Error Calculator

Enter value and click on calculate. Result will be displayed.

Approximated/measured value :
Exact/actual value :

Result :

Percent error :
Percent error non absolute :
Absolute error :
What is the percentage error? Percentage error is a way to express the discrepancy between an observed value and the true or expected value. It is often used to evaluate the precision of a measurement or the correctness of a calculation. Percentage error can be positive or negative, depending on whether the observed value is greater or smaller than the expected value.
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