Transparent calculation
Flooring quantity formula
Measure a rectangular floor, add the waste allowance for cuts and replacements, then divide by the coverage printed on one product unit.
Required area = length × width
Waste area = required area × waste % ÷ 100
Adjusted area = required area + waste area
Units to buy = round adjusted area ÷ coverage per unit up
Worked example
For a 10 ft × 12 ft floor, a product covering 23.21 sq ft per unit, and 10% waste:
- Required area
- 120 sq ft
- Adjusted area
- 132 sq ft
- Whole units
- 6 units
Flooring quantity questions
Enter the square feet covered by one carton, pack, sheet, or individual tile as shown on the product listing or carton. Room dimensions must be in feet, and coverage must be in square feet per unit. Convert metric measurements before entering them, and do not enter the total coverage of several cartons.