Percent Error Calculator
Calculate percent error between observed and true values with detailed steps
Calculate the percent error between observed and true values.
About Percent Error
Formula
Percent Error = ((Observed - True) / True) x 100
Interpretation
- Positive: Observed is greater than True
- Negative: Observed is less than True
- Zero: Perfect accuracy
Acceptable Error
- Under 1%: Excellent accuracy
- 1-5%: Good accuracy
- 5-10%: Acceptable
- Over 10%: Poor accuracy
Applications
- Scientific experiments
- Quality control
- Manufacturing tolerances
- Lab measurements