Bathroom Fan CFM Calculator

So, it’s time for a new bathroom fan. You are wondering how much airflow (CFM) you need?

I have created this helpful calculator that will tell you exactly how much CFM you need.

Just use the sliders to enter the size of your bathroom and you are ready to go!

CFM – Cubic feet per minute

If the calculator is not working try refreshing the page.

If you need additional help choosing your new bathroom fan, check out my guide with 6 easy steps to finding the right bathroom fan.

My recommendations for 50 CFM bathroom exhaust fans

My recommendations for 100-110 CFM bathroom fans

bathroom exhaust fan CFM airflow chart
Bathroom exhaust fan CFM guide