Ceiling Fan Size Calculator
Find the recommended ceiling fan blade diameter and CFM rating for a room based on floor area.
How to Use the Ceiling Fan Size Calculator
- Enter the room floor area in m².
- Click Calculate to see the recommended fan diameter and CFM rating.
Casi d'Uso
- •Selecting a ceiling fan for a bedroom.
- •Living room ventilation planning.
- •Energy-efficient cooling without AC.
- •Replacing an undersized ceiling fan.
Formula
Fan size by area: <10 m²→90 cm, <20 m²→107 cm, <35 m²→132 cm, ≥35 m²→152 cm.
Domande Frequenti
What is CFM?
Cubic Feet per Minute — the airflow volume a fan moves per minute. Higher CFM means more air movement.
Can I use a larger fan in a small room?
A slightly larger fan running at lower speed is often quieter and more efficient.
What ceiling height is needed?
A minimum of 2.1 m from floor to blade for safety. Use a flush-mount fan for low ceilings.