Quickly estimate your Peak Expiratory Flow (PEF) using our free Peak Flow Calculator. Input your age, height, and gender to get an estimated normal peak flow value, helping you monitor your lung health and respiratory function, especially useful for asthma management.
Formula:
The estimated Peak Expiratory Flow (PEF) is typically calculated using regression equations that consider a patient's age, height, and gender. While specific formulas can vary by population and source (e.g., ERS, ATS), they generally follow the form:
Estimated PEF = f(Age, Height, Gender)
Where:
- Age: Patient's age in years.
- Height: Patient's height in centimeters.
- Gender: Male or Female, which applies different coefficients in the equation.
This calculator provides an estimate based on commonly referenced predictive equations to give you an indication of expected peak flow values.