Peak Expiratory Flow Calculator
Result
Peak Expiratory Flow Calculator Calculate predicted peak expiratory flow (PEF) based on age, height, and sex. Used in asthma management. — free online calculator.
Formula
- Peak Expiratory Flow Calculator calculates its result from Actual, Predicted. It uses the formula Wright/Nunn-Gregg equations for predicted PEF by age, height, sex. Zone = actual/predicted × 100%. Change any input to recalculate the result instantly. This is an informational calculation and is not medical advice.
- The main inputs are Actual, Predicted. Enter them in the units and format shown in the calculator.
- Use the measurement units shown beside each field. The result is an estimate and should be interpreted in context.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Peak Expiratory Flow
- Actual: 2
- Predicted: 3
Using Actual = 2, Predicted = 3, the calculated result is 0.6666666667.
Sample result: Calculating…
Frequently asked questions
What does the Peak Expiratory Flow calculate?
Peak Expiratory Flow Calculator Calculate predicted peak expiratory flow (PEF) based on age, height, and sex. Used in asthma management. — free online calculator.
Which values should I enter?
Enter Actual, Predicted using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: Wright/Nunn-Gregg equations for predicted PEF by age, height, sex. Zone = actual/predicted × 100%.
Why might my result differ from another source?
Results can differ because measurement methods, rounding and assumptions vary. This calculator is an estimate and is not a medical diagnosis.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.