Percent Error Calculator

Results:
Percent Error:
Absolute Error:
Relative Error:
Quick Guide
  • Percent Error: The difference between measured and actual values as a percentage of the actual value.
  • Absolute Error: The absolute difference between measured and actual values.
  • Relative Error: The ratio of absolute error to the actual value.
  • Formula: Percent Error = |Measured - Actual| / |Actual| × 100%
  • A smaller percent error indicates more accurate measurements.
Common Error Ranges
  • Excellent: < 1%
  • Very Good: 1-2%
  • Good: 2-5%
  • Fair: 5-10%
  • Poor: > 10%