How Many Square Feet Is a 10x15 Room?

A 10 × 15 ft room is 150 square feet, which is 16.67 square yards or 13.94 square meters. The perimeter is 50 ft. For flooring buy about 165 sq ft (9 boxes) to allow for waste.

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Example job shown. Change the numbers to match yours.

Area
150.00 ft²
Square yards
16.67 yd²
Square meters
13.94 m²
Acres
0.0034 acres
Perimeter
50.00 ft
  • For an irregular area, split it into rectangles, triangles and circles, calculate each, and add them up.

Blueprint

10 ft15 ft

150 ft² area

10x15 in square feet, square yards and square meters

A long bedroom, a den or a dining room is about this size. The area is length times width: 10 × 15 = 150 sq ft. Measure to the walls at the longest point, and add closets and alcoves you will floor.

UnitThis room
Square feet150 sq ft
Square yards16.67 sq yd
Square meters13.94 sq m
Perimeter (around the walls)50 ft
Acres0.00344 acres

What to buy for 150 sq ft

MaterialAmount
Flooring (10% waste, 20 sq ft boxes)165 sq ft, 9 boxes
Carpet off a 12 ft roll (before trimming)20.0 sq yd, one piece
12 × 12 in tiles (10% waste)165 tiles
Baseboard (full perimeter, before doorways)50 ft

Flooring with different waste allowances

Straight layouts need about 5 to 7%, diagonal layouts 10%, and herringbone or patterns 15%.

WasteFlooring to buyBoxes of 20 sq ft
5% waste158 sq ft8
10% waste165 sq ft9
15% waste173 sq ft9

Use the square footage calculator for L-shaped rooms, circles and triangles, the carpet calculator for the roll layout with trimming, or the flooring calculator for a full flooring estimate.

Using the length of a 10 × 15 room

A 10 × 15 room has 150 sq ft, half as long again as it is wide. That proportion suits a bedroom with a desk under the window, a dining room where the table runs lengthwise, or a den with the sofa on a long wall. An 8 × 10 ft rug anchors one end and leaves 2.5 ft clear beyond it on the long axis and 1.0 ft down each side, enough for a walkway behind chairs.

Run plank flooring parallel to the 15 ft walls and each row is made of fewer, longer pieces, which wastes less at the ends. Budget 165 sq ft, or 9 boxes of 20 sq ft. Painting is modest: 349 sq ft of wall after openings, 1.99 gallons for two coats (buy 2 gallons). A 12 ft carpet roll covers the 10 ft width in one piece, so the 20.0 sq yd order has no seam.

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Frequently asked questions

How many square feet is a 10x15 room?

150 square feet (10 ft × 15 ft). That is 16.67 square yards or 13.94 square meters.

How many square feet of flooring do I need for a 10x15 room?

The floor is 150 sq ft, so buy about 165 sq ft with 10% for cuts and waste. That is 9 boxes at 20 sq ft a box.

How much carpet is a 10x15 room?

16.67 square yards of floor. Carpet comes off a 12 ft wide roll, so you buy whole strips: here one 12 ft wide piece 15 ft long, which is 180 sq ft (20.0 sq yd) of carpet for a 150 sq ft floor, plus a few inches a strip for trimming.

Related sizes and guides

Estimates only. Results assume standard materials and simple shapes. Supplier products vary, and the final call on quantity, structure and safety is yours. Check your local code and your supplier's guidance before ordering.