Enter the height (cm) into the Calculator. The calculator will evaluate the Peak Flow.
Peak Flow Formula
PF = (H * 5.3) - 433
Variables:
- PF is the Peak Flow (L/min)
- H is the height (cm)
To calculate Peak Flow, multiply the person’s height by 5.3, then subtract 433.
How to Calculate Peak Flow?
The following steps outline how to calculate the Peak Flow.
- First, determine the height (cm).
- Next, gather the formula from above = PF = (H * 5.3) – 433.
- Finally, calculate the Peak Flow.
- After inserting the variables and calculating the result, check your answer with the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
height (cm) = 146
FAQs
What is Peak Flow and why is it important?
Peak Flow is a measure of the maximum speed at which air can be blown out of the lungs. It is important for diagnosing and monitoring lung conditions such as asthma.
How often should Peak Flow be measured?
Peak Flow measurements can vary depending on the individual’s health condition. It is often recommended to measure it daily for those managing conditions like asthma.
Can Peak Flow vary throughout the day?
Yes, Peak Flow can vary throughout the day, often being lower in the morning and higher in the afternoon or evening.
Are there any factors that can affect Peak Flow readings?
Several factors can affect Peak Flow readings, including the individual’s posture, effort during the test, and any respiratory conditions they may have.
