Ceiling Fan Size Calculator
Picking the wrong size ceiling fan is one of the most common home improvement mistakes. A fan that is too small will barely move air, and one that is too large can overwhelm a small room. Enter your room dimensions and ceiling height to get the right size, airflow rating, and mounting style.
Fan size guidelines by room area:
- Up to 75 sq ft (small bedroom, bathroom): 29-36" fan
- 76-144 sq ft (bedroom, office): 36-42" fan
- 144-225 sq ft (master bedroom, dining room): 44-50" fan
- 225-400 sq ft (living room, large bedroom): 50-54" fan
- Over 400 sq ft (great room, open plan): 54-72" fan or multiple fans
What is CFM? CFM stands for cubic feet per minute and measures airflow. For comfortable air circulation, look for at least 3 CFM per square foot. A good fan for a 200 sq ft bedroom should move at least 600 CFM.
Mounting tips:
- Fan blades should hang 8-9 feet above the floor for best airflow
- Use flush/hugger mounts for ceilings under 8 feet
- Use downrod mounts to lower the fan from tall or vaulted ceilings
- Keep blade tips at least 18 inches from any wall