Air flow is calculated in either Cubic Feet per Minute (CFM) or Feet per Minute (FPM). FPM (Feet per Minute) is a speed conversion unit used commonly in both the British (Imperial) and U.S. System. Cubic feet per minute (CFM) is a unit to measure the velocity of the flow of air. It can be expressed as ft3/min. Enter the FPM value and the area in measurements of your choice such as mm2, acre, m2 and so on, in this Feet per minute to cubic feet per minute calculator to convert FPM to CFM (ft/min to ft3/min).
Calculate CFM for the area of 7 mm2 and FPM of 12.
Cubic Feet per Minute = Feet per Minute x Area
= 12 x (7/92903.04)