CALCULATOR
Percent Error Calculator
percent error. Example: Positive expected value: 100 units, Measured value: 95 units gives 5 %. Expected reference strictly positive; result may exceed 100%. Not measurement uncertainty or a confidence interval. Elementary arithmetic over the accepted finite domain. No statistical population inference, supplied-data validity claim or specialist recommendation.
Expected reference strictly positive; result may exceed 100%. Not measurement uncertainty or a confidence interval. Elementary arithmetic over the accepted finite domain. No statistical population inference, supplied-data validity claim or specialist recommendation. Derivation: Absolute discrepancy normalized by positive reference.
Accepted inputs: Positive expected value: 0.001 to 1,000,000 units; Measured value: 0 to 1,000,000 units.
How the calculation works
error =100|measured−expected|/expected
Worked example
With positive expected value 100 units, measured value 95 units, percent error is 5 %.
Assumptions and limits
Expected reference strictly positive; result may exceed 100%. Not measurement uncertainty or a confidence interval. Elementary arithmetic over the accepted finite domain. No statistical population inference, supplied-data validity claim or specialist recommendation. Derivation: Absolute discrepancy normalized by positive reference.