Carpet Calculator
How much carpet for a room? Carpet is sold by the square yard off a 12-ft roll — enter the room size and get square yards, the number of roll runs and seams, and the cost.
10% for seams, pattern matching and cuts. Patterned carpet needs more.
Carpet is priced per square yard. Check the current shelf price; it varies widely by fibre and pile.
Carpet for 120 sq ft
14.7 sq yd to buy — 132 sq ft · 1 roll run of 12-ft-wide carpet
$367 — estimated material cost at $25.00 / sq yd
Exact area: 120 sq ft (11.1 sq m) = 13.3 sq yd. With 10% waste for seams and cuts, buy 14.7 sq yd. The room fits a single 12-ft roll width, so no seam is needed. Padding, tack strips and installation are extra.
Estimate. Carpet is sold by the square yard (9 sq ft). Confirm the roll width and current price with the shop before ordering.
Formula used: Square yards = (length × width ÷ 9) × (1 + waste%). Roll runs = ceiling(room width ÷ 12 ft roll width).
How this estimate works: Carpet is priced per square yard, and 1 sq yd is 9 sq ft, so the room area is divided by 9 and a waste allowance is added for seams and cuts. Carpet comes off a 12-foot-wide roll, so a room wider than 12 feet needs more than one run and a seam — the tool flags that, because a seam changes both the waste and how the job looks.
How the carpet calculator works
Carpet is priced per square yard, and 1 sq yd is 9 sq ft, so the room area is divided by 9 and a waste allowance is added for seams and cuts. Carpet comes off a 12-foot-wide roll, so a room wider than 12 feet needs more than one run and a seam — the tool flags that, because a seam changes both the waste and how the job looks. Padding, tack strips and installation are extra. This is an estimate — confirm the roll width and current price with the shop.
Try next: Tile Calculator · Flooring Calculator · Laminate Flooring Calculator
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