Enter the total volume of flow (ft^3) and the total time (min) into the CFH Calculator. The calculator will evaluate the CFH. 

CFH Formula

The following two example problems outline the steps and information needed to calculate the CFH.

CFH = V/T * 60


  • CFH is the CFH (ft^3/hr)
  • V is the total volume of flow (ft^3) 
  • T is the total time (min) 

To calculate the CFH, divide the total volume of flow by the total time.

How to Calculate CFH?

The following steps outline how to calculate the CFH.

  1. First, determine the total volume of flow (ft^3). 
  2. Next, determine the total time (min). 
  3. Next, gather the formula from above = CFH = V/T * 60.
  4. Finally, calculate the CFH.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

total volume of flow (ft^3) = 125

total time (min) = 55

CFH = V/T * 60 = ?