Ceiling Fan Size Calculator
Find the right ceiling fan blade span and mounting height for a room.
Enter your values to see the result.
Continue your work
- Square Feet Calculator — Measure the room.
- TV Size Calculator — Plan the rest of the room.
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Clear instructions
Find steps, examples and limitations below.
Use online
Open the tool in a supported web browser.
Free to use
No sign-up required. Tool-specific limits may apply.
How to use the Ceiling Fan Size Calculator
Find the right ceiling fan blade span and mounting height for a room.
- 1 Enter the room length and width.
- 2 Enter the ceiling height.
- 3 Read the recommended blade span and mounting.
Example and practical tips
A 14 × 12 ft bedroom with a 9 ft ceiling suits a 44–50 in fan on a 6 in downrod.
Frequently asked questions
How high should the blades be?
Ideally 8–9 ft above the floor and never below 7 ft.
What if the room is very large?
Rooms over 400 sq ft often work better with two fans.
Report an issue
Something broken or not quite right? Tell us and we will look into it.