Flooring Calculator
Square feet and boxes of laminate, LVP, woodRuns in your browser
L-shaped room? Split it into rectangles, work out each, and add the boxes together.
Rough material cost
$700Price per square foot of material only (no underlayment, trim or labor). Rough 2026 US average for mid-range laminate / LVP.
Material estimates only. Round up, buy a little extra, and check with your supplier. Structural work (footings, framing, roofs) must follow local building codes; consult a licensed contractor where required.
How it works
Formulas
Boxes = length × width × (1 + waste %) ÷ coverage per box, rounded upWorked example
Input: 15 × 12 ft room, 10% waste, 20 sq ft per box.
- 15 × 12 = 180 sq ft.
- 180 × 1.10 = 198 sq ft.
- 198 ÷ 20 = 9.9 → 10 boxes.
Result: 10 boxes (200 sq ft).
How to use
- 1Enter the room length and width.
- 2Add a waste allowance: 10% for straight lay, 15% for diagonal or herringbone.
- 3Enter the coverage per box from the label.
- 4Buy the number of boxes shown.
FAQ
How much extra flooring should I buy?
10% for a standard straight installation; 15% or more for diagonal, herringbone, many corners or a long, narrow room. Keep a spare box for future repairs.
How do I measure an L-shaped room?
Split it into rectangles, measure each, and add the areas together (or add the boxes from each).
Can I use metric units?
Yes. Switch to Metric and enter meters and centimeters; results show cubic meters, square meters or tonnes alongside US units.