Ceiling Fan Size Guide
Find the right ceiling fan blade span for your room size and ceiling height.
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Room area
Recommended blade span
Fan type
How to use
- Enter your room length and width in feet.
- The calculator computes the floor area and maps it to industry-standard fan blade spans.
- Use the reference: under 75 sqft → 29–36 in; 76–144 sqft → 36–42 in; 145–225 sqft → 44–50 in; 226–400 sqft → 50–54 in; over 400 sqft → 56–72 in or two fans.
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Frequently Asked Questions
- Is this ceiling fan size guide free?
- Yes, completely free with no signup required.
- Does my data leave my device?
- No. All calculations happen in your browser — nothing is sent to a server.
- Does it work on mobile?
- Yes. The tool is mobile-first and works on any modern browser.
- Does ceiling height affect fan size?
- Yes. For ceilings taller than 9 ft, consider a fan with a downrod to position the blades 8–9 ft above the floor. This maximizes airflow efficiency without changing the blade span recommendation.
- What if my room is over 400 sqft?
- For large open spaces, consider two fans rather than one oversized model. Two fans distribute air more evenly and are easier to source. A 56–72 in fan can handle a single large room up to about 600 sqft.
Last updated: By jarvisbox