Exhaust Fan Calculator

Calculate exhaust fan
size for any room.

Exhaust Fan

Calculate a Room Exhaust
Fan Size Requirement.

Entry Form

Length: Of Room

Width: Of Room

Heigth: Of Room

Exchange Air:Per Hour


Fan Size:CFPM

Using This Exhaust
Fan Size Calculator.

This calculator determines
the proper size exhaust fan
for a room.

A proper bathroom room
air exchange times, is 8
times per hour.

A kitchen is 15 times per

Go to the next even size
of cubic feet per minute

Enter length of room
in feet.

Enter width of room
in feet.

Enter height of room
in feet.

Enter number of air
replacement times.
per hour.


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