Hardwood Flooring Calculator
How much hardwood for a room? Enter the room size and plank width, pick the waste allowance, and get boxes, linear feet and cost — with the notes on acclimating and finishing.
Narrow planks (2.25–3 in) waste more than wide planks (5–7 in) because there are more joints.
Printed on the box — commonly 18–25 sq ft.
Hardwood for 120 sq ft
7 boxes — 132 sq ft to buy · 317 linear ft of 5-in plank
$1,056 — estimated material cost at $8.00 / sq ft
Exact area: 120 sq ft (11.1 sq m). With 10% waste, buy 132 sq ft — 7 boxes at 20.0 sq ft per box. Solid hardwood usually needs acclimating in the room for several days before install, and unfinished wood adds sanding and finishing cost on top of the material price.
Estimate. Confirm the square feet per box on the actual box label and the current shelf price before ordering.
Formula used: Square feet to buy = length × width × (1 + waste%). Boxes = sq ft to buy ÷ sq ft per box, rounded up. Linear feet = sq ft to buy ÷ plank width in feet.
How this estimate works: Hardwood is sold by the square foot in boxes, so the tool adds a waste allowance to the room area first — 10% for a straight lay, more for diagonal or herringbone, where end cuts cannot be reused. Linear feet come from dividing by the plank width, which is how installers check the order against the bundle lengths.
How the hardwood flooring calculator works
Hardwood is sold by the square foot in boxes, so the tool adds a waste allowance to the room area first — 10% for a straight lay, more for diagonal or herringbone, where end cuts cannot be reused. Linear feet come from dividing by the plank width, which is how installers check the order against the bundle lengths. Solid hardwood usually needs acclimating in the room for several days before install, and unfinished wood adds sanding and finishing cost on top of the material price.
Try next: Tile Calculator · Flooring Calculator · Laminate Flooring Calculator
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