Feet Per Minute to Cubic Feet Per Minute Converter

Convert FPM to CFM

Input Fields

Velocity

ft/min

Enter the air velocity in feet per minute (FPM)

Area

ft²in²m²cm²mm²

Enter the cross-sectional area

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Calculate automaticallyIf enabled, the result will update automatically when you change any value.

Your Results

Cubic Feet per Minute (CFM)

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Feet Per Minute to CFM Conversion Formula

$$\text{CFM} = \text{FPM} \times \left( \frac{\text{Area}}{144} \right)$$

Explanation: CFM (cubic feet per minute) is calculated by multiplying the airflow velocity in feet per minute (FPM) by the area in square inches divided by 144 to convert to square feet. This formula assumes consistent units and automatically handles unit conversions for various area measurements.

This converter is commonly used in HVAC systems, ventilation design, and industrial airflow calculations. It simplifies converting linear airflow speed (FPM) into volumetric flow rate (CFM), taking into account the cross-sectional area. The tool supports various units for area, including square millimeters, meters, feet, inches, and even acres — making it ideal for professionals and students alike.