Square Footage Calculator
for Walls & Ceilings
Enter dimensions below to calculate how many square feet you need per wall or ceiling. Recommended number of 20 s.f. boxes include a waste factor of 15%. Suggested number of boxes are rounded up to the next full box.
If your room shape is more complex than a rectangle, please contact us.
Subtract from the total square footage any doors (estimated at 3′ x 7′) and windows (estimated at 3′ x 4′).
Fields marked with an asterisk (*) are required.