Percent Error Calculator

Calculate Error

Results

Enter values and click calculate to see results

Understanding Error Calculations

Absolute Error

  • The magnitude of difference between values
  • |Experimental - Theoretical|
  • Always positive
  • Units same as original values

Percent Error

  • Error expressed as percentage
  • (Absolute Error ÷ |Theoretical|) × 100
  • Always positive
  • Useful for comparing different measurements

Relative Error

  • Signed error ratio
  • (Experimental - Theoretical) ÷ Theoretical
  • Can be positive or negative
  • Shows direction of error