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