Percent Error Calculator
How to Calculate Percentage Error
Percentage error is a way to compare the difference between a **measured value** and the **actual (true) value**. It helps to determine how accurate your measurements are.
Formula for Percentage Error:
Percentage Error = [(|Measured Value – Actual Value|) / Actual Value] × 100%
Steps to Calculate Percentage Error:
- Find the difference between the measured value and the actual value.
- Take the absolute value of the difference (ignore negative signs).
- Divide the result by the actual value.
- Multiply by 100 to get the percentage error.
Example Calculation:
Measured Value: 95
Actual Value: 100
Step 1: |95 – 100| = 5
Step 2: 5 / 100 = 0.05
Step 3: 0.05 × 100 = 5%
Final Answer: 5% Error
This method is widely used in science, engineering, and data analysis to check measurement accuracy.