What size ceiling fan do I need?

How ceiling fan sizing works

Ceiling fans are sized by blade span (diameter, in inches), matched to a room’s floor area. As a guide: rooms up to ~75 sq ft want a 29–36" fan, ~75–175 sq ft a 42–48" fan, ~175–300 sq ft a 52–56" fan, and larger rooms a 60"+ fan (or two fans). A fan that’s too small barely moves air; hang the blades 8–9 ft off the floor and at least 18" from the walls for the best airflow.