Percent Error Calculator
Accurately calculate the percentage error between theoretical and experimental values
Calculate Percent Error
Calculation Result:
0.00%
| (Theoretical - Experimental) / Theoretical | × 100%
The percent error quantifies the difference between an experimental value and a theoretical value as a percentage of the theoretical value.
About Percent Error
Percent error measures the accuracy of a measurement by comparing a measured (experimental) value to a known or theoretical value.
Percent Error = |(Theoretical - Experimental)| / |Theoretical| × 100%
This calculation is essential in scientific experiments, quality control, and data analysis to determine how close a measured value is to a true value.
Examples:
Physics Experiment: If the theoretical acceleration due to gravity is 9.8 m/s² and your measurement is 9.5 m/s², the percent error is 3.06%.
Chemistry Measurement: When weighing a sample with a theoretical mass of 50g, if your scale shows 49.5g, the percent error is 1.0%.
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