Enter the volumetric air flow (CFM) and the total time (minutes) into the Air Volume Calculator. The calculator will evaluate and display the Air Volume. 

Air Volume Formula

The following formula is used to calculate the Air Volume. 

AV = AF * T

  • Where AV is the Air Volume (ft^3)
  • AF is the volumetric air flow (CFM) 
  • T is the total time (minutes) 

How to Calculate Air Volume?

The following example problems outline how to calculate Air Volume.

Example Problem #1:

  1. First, determine the volumetric air flow (CFM). 
    1. The volumetric air flow (CFM) is given as: 30.
  2. Next, determine the total time (minutes). 
    1. The total time (minutes) is provided as: 5.
  3. Finally, calculate the Air Volume using the equation above: 

AV = AF * T

The values given above are inserted into the equation below:

AV = 30 * 5 = 150 (ft^3)


Example Problem #2: 

The variables needed for this problem are provided below:

volumetric air flow (CFM) = 6

total time (minutes) = 8

Entering these values and solving gives:

AV = 6 * 8 = 48 (ft^3)