How much flooring do I need for a 12x15 room?

Buy about 198 sq ft: the 180 sq ft floor plus 10% for cuts and waste. With boxes that cover 20 sq ft, that's 10 boxes. Diagonal or herringbone layouts need 15–20% extra instead.

How much paint do I need for a 12x15 room?

With 8 ft ceilings, one door and one window, the walls are about 396 sq ft. Two coats at 350 sq ft per gallon is 2.3 gallons, so buy 3. Painting the ceiling as well brings it to 3.3 gallons.

How many square meters is 12 by 15 feet?

16.72 m². The room is 3.66 m by 4.57 m.

How many sheets of drywall for a 12x15 room?

About 20 sheets of 4x8 drywall for the walls and ceiling with 8 ft walls, one door and one window, including 10% waste.

Room sizes

How Many Square Feet Is a 12x15 Room?

A 12x15 room is 180 square feet (16.7 m²). Flooring with waste, paint, drywall and baseboard for a 12x15 room.

Updated October 12, 2026 · FloorFigures

Short answer

A 12x15 room is 180 square feet (12 × 15), or 16.7 m² and 20 square yards. Its perimeter is 54 ft. Flooring with 10% waste comes to about 198 sq ft.

Drawn to scale. Each grid square is 1 ft × 1 ft.

Materials for a 12x15 room

Estimates for a plain rectangular room with 8 ft ceilings, one door and one window. Adjust for your own room with the flooring, paint and drywall calculators.

Item	Quantity	Assumes
Floor area	180 sq ft	Wall to wall
Flooring to buy	198 sq ft (10 boxes)	10% waste, 20 sq ft boxes
Carpet	20.7 sq yd	12 ft roll, no seams
Wall area	396 sq ft	8 ft walls, less a door and a window
Paint, walls	2.3 gal (buy 3)	2 coats, 350 sq ft per gallon
Paint, walls and ceiling	3.3 gal	2 coats
Drywall	20 sheets	4x8 sheets, walls and ceiling, 10% waste
Baseboard	51 ft	Perimeter less a 3 ft door

What a 12x15 room is used for

Rooms this size are usually primary bedrooms, kitchens, dining rooms or family rooms. A queen bed (60" × 80") takes up about 33 sq ft, or 19% of the floor.

12x15 in other units

Unit	Value
Square feet	180
Square meters	16.72
Square yards	20
Square inches	25,920
Acres	0.0041
Dimensions in meters	3.66 × 4.57 m

Rooms close to 12x15

Room	Square feet	Square meters
10x16	160	14.9
12x14	168	15.6
13x13	169	15.7
13x14	182	16.9
12x16	192	17.8
13x15	195	18.1
14x14	196	18.2
10x20	200	18.6

Room not a simple rectangle? Use the square footage calculator for L-shapes and angled walls, or split it into rectangles.

Questions

How many square feet is a 12x15 room?: A 12 by 15 foot room is 180 square feet: 12 × 15 = 180. That's 16.7 square meters or 20 square yards.
How much flooring do I need for a 12x15 room?: Buy about 198 sq ft: the 180 sq ft floor plus 10% for cuts and waste. With boxes that cover 20 sq ft, that's 10 boxes. Diagonal or herringbone layouts need 15–20% extra instead.
How much paint do I need for a 12x15 room?: With 8 ft ceilings, one door and one window, the walls are about 396 sq ft. Two coats at 350 sq ft per gallon is 2.3 gallons, so buy 3. Painting the ceiling as well brings it to 3.3 gallons.
How many square meters is 12 by 15 feet?: 16.72 m². The room is 3.66 m by 4.57 m.
How many sheets of drywall for a 12x15 room?: About 20 sheets of 4x8 drywall for the walls and ceiling with 8 ft walls, one door and one window, including 10% waste.