How to Calculate Cubic Feet Per Minute - Definition, Formula, Example

Definition:
Cubic Feet Per Minute (CFM) is a measurement for finding the air volume velocity and it is commonly used for measuring the air flow in heating or cooling diffuses. CFM is also used as a rating and it depends on your room size to ensure adequate ventilation.
Formula: CFM = (fpm * area) Where, 'fpm' denotes feet per minute. 'ft' denotes area in square feet. 
Example :
Given,
Feet per Minute = 20 fpm, Area in square feet = 55 ft2.
To Find,
Cubic Feet Per Minute
Solution :
Substitute the value of FPM=20 and Area=55 ft2 in the formula, CFM= (fpm * area) = 20 * 55 = 1100.
Category:QandA