CFM – Cubic Feet per Minute Calculator
By inputting the airflow velocity (in feet per minute, FPM) and the area in square feet, you can calculate the required volume of air (in cubic feet per minute, CFM) for a specific space. Conversely, there is an option to calculate the necessary area or FPM based on the other two parameters.
Airflow Volume (CFM, FPM, Area) Calculator
Airflow Volume Calculation Formula
Where:
- CFM is Cubic Feet per Minute
- FPM is Feet per Minute (air velocity)
- Area is cross-sectional area in square feet
You can rearrange the formula to solve for any of the variables:-
$$\text{FPM} = \frac{\text{CFM}}{\text{Area}}$$
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$$\text{Area} = \frac{\text{CFM}}{\text{FPM}}$$
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This calculator is essential for HVAC engineers, ventilation system designers, and building contractors. It helps determine the required airflow (CFM) for a given area and velocity or lets you calculate airspeed or duct area based on known parameters. Whether designing a residential ventilation system or industrial airflow network, this tool ensures accurate air volume estimations for comfort and efficiency.