Exhaust Fan CFM Calculator
Exhaust Fan CFM
Calculate the required exhaust fan airflow in CFM for bathrooms, kitchens, and utility spaces based on room size, use type, and ventilation code requirements.
Formula
CFM by Volume = (Length x Width x Height x Air Changes/hr) / 60; CFM by Area = Square Footage x CFM Per Sq Ft; Required CFM = Maximum of Volume, Area, and Code Minimum; Air Changes: Bathroom=8, Kitchen=15, Laundry=6, Garage=10
Frequently Asked Questions
undefined
undefined
undefined
undefined
undefined
undefined
You may also need
~
Duct Sizing Calculator
Calculate the correct HVAC duct dimensions based on airflow requirements, friction rate, and duct shape for efficient air distribution in heating and cooling systems.
Everyday~
BTU Heating Calculator
Free BTU calculator. Calculate the BTU heating capacity needed for your room or home based on size, insulation, climate, and other factors.
Everyday