How to Calculate Percentage Error
Introduction & Importance
Percentage error is a crucial concept in measurement and data analysis. It helps assess the accuracy of an estimate or measurement…
How to Use This Calculator
- Enter the value you’re measuring.
- Enter your estimate of that value.
- Click ‘Calculate’.
Formula & Methodology
The formula for percentage error is:
Percentage Error = |(Estimate - Value) / Value| * 100%
Real-World Examples
Data & Statistics
| Value | Estimate | Percentage Error |
|---|---|---|
| 100 | 105 | 5% |
Expert Tips
- Always round your estimate to the nearest reasonable value.
- Percentage error is sensitive to small changes in large values.
Interactive FAQ
What is a good percentage error?
It depends on the context, but generally, lower is better.