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% Percent Error Calculator
Measured/Experimental Value
Actual/Theoretical Value
Precision (decimal places)
Calculate Percent Error
Result
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Absolute Error:
--
Relative Error:
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Quick Examples:
Measured=25.5, Actual=25
Measured=9.8, Actual=10
Measured=150, Actual=145
Measured=0.52, Actual=0.5
Notes:
Percent Error Formula: % Error = |(Measured - Actual) / Actual| × 100%
Absolute Error: |Measured - Actual|
Relative Error: |(Measured - Actual) / Actual|
Percent error is always positive (absolute value)
Actual value cannot be zero (would result in division by zero)