Percent Error Calculator
error
Compare experimental vs. theoretical values to find percent error.
|observed - true| / |true| × 100%
Percent Error = |Experimental - Theoretical| / |Theoretical| × 100%
Enter values
measured or experimental value
accepted or theoretical value
Percent Error
15
%
Formula:
|85 - 100| / |100| × 100% = 15%
Difference:
15 (absolute difference)
Interpretation:
Observed is 15% lower than true