INTERIOR PROJECT CALCULATOR
Flooring Calculator
Turn room measurements into the number of boxes, square feet, or square yards to buy, with a waste allowance you can see.
Build your estimate
HOW IT WORKS
Boxes you can account for.
TapeToCart separates the area you measured, the waste allowance you chose, and the whole boxes you have to buy, so you can see where every square foot comes from.
How the calculation works
Each rectangular room is length multiplied by width. Room areas are added together, and the waste allowance is applied to the total.
Area to cover = measured area × (1 + waste %)
Boxes = area to cover ÷ coverage per box, rounded up
Because boxes cannot be split, the coverage you buy is usually a little more than the area to cover. The difference is shown as extra coverage.
Before you order
Use the coverage printed on the exact product you are buying. Carton sizes differ between products, even within the same brand.
Buy all boxes from the same production lot when possible, because color and texture can vary between lots.
Check the manufacturer’s instructions for expansion gaps, acclimation time, underlayment, and subfloor requirements.
Sources and assumptions
Area uses U.S. customary units: 1 yd² = 9 ft².
Box coverage and roll coverage are taken from the product values you enter. We do not assume a standard carton size.
The waste allowance is a planning margin you choose, and it is shown in every result.