How much flooring do I need for a 12x24 room?

Buy about 317 sq ft: the 288 sq ft floor plus 10% for cuts and waste. With boxes that cover 20 sq ft, that's 16 boxes. Diagonal or herringbone layouts need 15–20% extra instead.

How much paint do I need for a 12x24 room?

With 8 ft ceilings, one door and one window, the walls are about 540 sq ft. Two coats at 350 sq ft per gallon is 3.1 gallons, so buy 4. Painting the ceiling as well brings it to 4.7 gallons.

How many square meters is 12 by 24 feet?

26.76 m². The room is 3.66 m by 7.32 m.

How many sheets of drywall for a 12x24 room?

About 29 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 12x24 Room?

A 12x24 room is 288 square feet (26.8 m²). Flooring with waste, paint, drywall and baseboard for a 12x24 room.

Updated October 12, 2026 · FloorFigures

Short answer

A 12x24 room is 288 square feet (12 × 24), or 26.8 m² and 32 square yards. Its perimeter is 72 ft. Flooring with 10% waste comes to about 317 sq ft.

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

Materials for a 12x24 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	288 sq ft	Wall to wall
Flooring to buy	317 sq ft (16 boxes)	10% waste, 20 sq ft boxes
Carpet	32.7 sq yd	12 ft roll, no seams
Wall area	540 sq ft	8 ft walls, less a door and a window
Paint, walls	3.1 gal (buy 4)	2 coats, 350 sq ft per gallon
Paint, walls and ceiling	4.7 gal	2 coats
Drywall	29 sheets	4x8 sheets, walls and ceiling, 10% waste
Baseboard	69 ft	Perimeter less a 3 ft door

What a 12x24 room is used for

Rooms this size are usually living rooms, family rooms, large primary suites or open kitchens. A queen bed (60" × 80") takes up about 33 sq ft, or 12% of the floor.

12x24 in other units

Unit	Value
Square feet	288
Square meters	26.76
Square yards	32
Square inches	41,472
Acres	0.0066
Dimensions in meters	3.66 × 7.32 m

Rooms close to 12x24

Room	Square feet	Square meters
14x18	252	23.4
16x16	256	23.8
15x18	270	25.1
14x20	280	26
16x18	288	26.8
15x20	300	27.9
16x20	320	29.7
18x18	324	30.1

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 12x24 room?: A 12 by 24 foot room is 288 square feet: 12 × 24 = 288. That's 26.8 square meters or 32 square yards.
How much flooring do I need for a 12x24 room?: Buy about 317 sq ft: the 288 sq ft floor plus 10% for cuts and waste. With boxes that cover 20 sq ft, that's 16 boxes. Diagonal or herringbone layouts need 15–20% extra instead.
How much paint do I need for a 12x24 room?: With 8 ft ceilings, one door and one window, the walls are about 540 sq ft. Two coats at 350 sq ft per gallon is 3.1 gallons, so buy 4. Painting the ceiling as well brings it to 4.7 gallons.
How many square meters is 12 by 24 feet?: 26.76 m². The room is 3.66 m by 7.32 m.
How many sheets of drywall for a 12x24 room?: About 29 sheets of 4x8 drywall for the walls and ceiling with 8 ft walls, one door and one window, including 10% waste.