CFM Calculator

Calculate CFM Requirements

Room Length (ft)

Room Width (ft)

Room Height (ft)

Air Changes per Hour

Room Type

Occupancy

About CFM Calculations

CFM (Cubic Feet per Minute) calculations determine the airflow requirements for proper ventilation.

CFM Formula:

CFM = (Room Volume × Air Changes per Hour) ÷ 60

Air Changes per Hour:

Residential: 4-6 ACH
Office: 6-8 ACH
Commercial: 8-12 ACH
Industrial: 12-20 ACH

Applications:

• HVAC system sizing
• Ventilation design
• Air quality control
• Equipment selection
• Energy efficiency