About This Calculator
This calculator computes the percentage error between a measured value and a true value, which is a common measure of accuracy in scientific experiments and quality control processes.
How It Works
The percentage error is calculated using the formula:
Percent Error = |Measured - True|True × 100%
Where:
- Measured is the value obtained from measurement
- True is the actual or accepted value
Frequently Asked Questions
What is percentage error?
Percentage error is a measure of how inaccurate a measurement is, compared to the true value, expressed as a percentage of the true value.
Can percentage error be negative?
No, percentage error is always a non-negative value because it is the absolute value of the difference between the measured and true values, divided by the true value.
What does a percentage error of 0% mean?
A percentage error of 0% means that the measured value is exactly equal to the true value, indicating perfect accuracy.