How to Calculate CFM from BTU

To calculate the CFM from BTU, you need to know the BTU and the temperature difference (ΔT) in degrees Fahrenheit between the entering air and leaving air. The formula is:

CFM = \(\frac{\text{BTU}}{\Delta T \times 1.08}\)

Definitions:

• CFM: Cubic Feet per Minute.
• BTU: British Thermal Units.
• ΔT: Temperature difference in degrees Fahrenheit between the entering air and leaving air.

Use the form above to input the values, and the calculator will provide the required CFM.