Flooring

Square footage, waste, box, roll, and sheet counts for floor coverings and subfloor.

Turn a room rectangle or known area, a waste percent, and coverage per box into the number of flooring boxes to order.

Estimate rolls of foam, cork, or felt underlayment from floor area, roll coverage, and an overlap percent.

Estimate how many 4x8 plywood or OSB panels you need to sheathe a floor area, with a cut-and-fit waste allowance.