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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

Panasonic FV-0511VQC1 WhisperSense DC Ventilation Fan, 50-80-110 CFM , White
  • Installation: Features a 4 or 6-inch duct adaptor ideal for renovations, assisted living and dorms
  • Precision Spot Ventilation: Quiet and powerful ventilation while removing moisture and pollution
  • Dual Sensor Technology: Provides built-in redundancy for automatic moisture and odor control
  • Flexible Installation: Comes with Flex-Z Fast bracket for easy, fast and trouble-free installation

Last update on 2024-03-27 / Affiliate links / Images from Amazon Product Advertising API