📏 Percentage Error Calculator
In engineering and laboratory work, accuracy matters. The Percentage Error Calculator helps you quickly determine how far a measured value deviates from the true or theoretical value — essential for quality control, calibration, and testing tasks.
Calculate Measurement Accuracy Instantly
Enter the True (Theoretical) and Measured values.
Click Calculate.
The calculator instantly shows the percentage error in your measurement.
📘 How to Use
FAQ
Q1. What is percentage error in measurement?
A. It’s the difference between the true and measured values expressed as a percentage — showing how accurate a measurement is.
Q2. Where is percentage error used?
A. Common in calibration, testing, quality control, and laboratory analysis.
Q3. Can this calculator be used for experiments?
A. Yes, it’s designed for quick use in lab reports and engineering experiment documentation.