Percent Error Calculator
Calculate percent error between experimental and theoretical (accepted) values.
About Percent Error
Percent error measures how far an experimental (measured) value is from a theoretical (accepted/true) value, expressed as a percentage. Formula: % Error = |Experimental − Theoretical| / |Theoretical| × 100. A lower % error means greater accuracy.
Values
Experimental (Measured) Value
Theoretical (Accepted) Value
Result
Absolute Error
0.2
Percent Error
2.04%
Relative Error
0.0204
Accuracy
97.96%
% Error = |9.6 − 9.8| / |9.8| × 100 = 2.04%