Flooring takeoff formula
boxes = length × width × rooms × (1 + waste %) ÷ box coverageBoxes are rounded up. The actual purchased area will usually be slightly higher than the waste-adjusted target because partial cartons are not assumed.
Flooring calculator
Estimate measured area, purchase area with cutting waste, and full cartons for equal rectangular rooms.
Enter room and product details
For different room sizes, calculate each room separately and add the cartons.
Use boxes as the purchasing unit
The calculator rounds purchase area to complete cartons, which means the delivered coverage may exceed the selected waste percentage. Room shape, board direction, stagger rules, minimum end pieces, and transitions determine whether that surplus is usable.
- Enter coverage from the exact carton label.
- Separate products, colors, plank sizes, and installation areas.
- Retain matching material for repairs and follow acclimation and substrate requirements.
Allow for the layout
Simple square rooms may need less waste than diagonal layouts, narrow hallways, patterned tile, or rooms with many corners. Follow the product instructions and installer’s layout plan.
Measure before purchasing
Split L-shaped spaces into rectangles and add their areas. Exclude permanent areas that will not receive flooring only when the installation plan calls for it. Confirm carton coverage, dye lot, acclimation, underlayment, expansion gaps, and subfloor requirements.