🎯 Percent Error Calculator

What is Percent Error?

Percent error measures the accuracy of a measurement compared to the accepted (theoretical) value. The formula is: |experimental - theoretical| / |theoretical| × 100%. A lower percent error indicates a more accurate measurement.

When to Use Percent Error

Percent error is commonly used in science labs, engineering, quality control, and any field where comparing measured results to expected values is important. It helps quantify how far off a measurement is from the true value.