Ceiling Fan Size Calculator
Find the right ceiling fan diameter for your room.
Enter room dimensions to get a fan size recommendation for optimal airflow.
Recommended Fan Size
Ceiling fan sizing is based on room area. The fan diameter should match the room size for effective air circulation.
Unit conversions:
Imperial: Room dimensions in feet, fan size in inchesMetric: Room dimensions in meters, fan size in centimeters
Sizing guide (imperial):
| Room Area (sq ft) | Fan Diameter |
|---|---|
| Up to 75 | 29–36 in |
| 76–144 | 36–42 in |
| 144–225 | 44–50 in |
| 225–400 | 50–54 in |
| Over 400 | 56–72 in or two fans |
Sizing guide (metric):
| Room Area (m²) | Fan Diameter |
|---|---|
| Up to 7 | 75–90 cm |
| 7–13 | 90–107 cm |
| 13–21 | 112–127 cm |
| 21–37 | 127–137 cm |
| Over 37 | 142–183 cm or two fans |
Mounting height tips:
- Fan blades should be 7–9 feet (2.1–2.7 m) above the floor
- At least 18 inches (45 cm) clearance from walls on all sides
- For ceilings over 9 ft (2.7 m), use a downrod extension
- For ceilings under 8 ft (2.4 m), use a flush-mount (hugger) fan