Percent Error Calculator | Accurate Measurement Analysis Tool

PERCENT ERROR CALCULATOR

Measure accuracy with precision. Calculate the percent error between theoretical and experimental values instantly.

Theoretical Value

Experimental Value

Enter Values

Input the theoretical (accepted) value and your experimental (measured) value.

Calculate

Click the calculate button to compute the percent error instantly.

Analyze Results

Review the percent error and detailed calculation to understand your measurement accuracy.

PERCENT ERROR

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Theoretical Value: —

Experimental Value: —

Absolute Difference: —

PERCENT ERROR FORMULA

% Error = |(Theoretical – Experimental)| / |Theoretical| × 100%

Percent error quantifies the accuracy of a measurement by comparing it to a theoretical or accepted value. It’s calculated as the absolute value of the difference between experimental and theoretical values divided by the absolute value of the theoretical value, multiplied by 100. This calculator helps students, researchers, and quality control professionals evaluate measurement precision.