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Percent Error Calculator

Calculate percent error between an experimental and theoretical value.

How this is calculated
Percent error = |experimental − theoretical| ÷ |theoretical| × 100

Assumptions used in this calculation

  • Absolute value: The result uses the absolute difference, so it does not indicate whether the experimental value was above or below the theoretical value.

About this calculator

The percent error calculator finds the percent error between a measured (experimental) value and an accepted (theoretical) value.

Worked example

Experimental 48, theoretical 50

Result: Percent error = 4%

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