Ceiling Fan Size Calculator
Find the right ceiling fan blade span for your room size, so airflow matches the space without overwhelming it.
Recommended fan span
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Room area —
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How it works
Recommended span scales with room area: small rooms 42–44 in, large rooms 52–60+ inFrequently Asked Questions
What size ceiling fan do I need?
Match blade span to the largest room dimension: rooms up to 75 sq ft suit a 29–42 in fan, 76–144 sq ft a 44–50 in fan, 145–225 sq ft a 52–56 in fan, and bigger rooms 56–60 in or multiple fans.
Can a ceiling fan be too big for a room?
Yes — an oversized fan in a small room moves air harshly and looks out of proportion, while an undersized one barely circulates a large room. Matching span to area gives comfortable, even airflow.
How high should a ceiling fan hang?
Blades should sit 8–9 ft above the floor and at least 18 in from walls. For ceilings above 9 ft, use a downrod to bring the fan into that range.