How much flooring do I need for a 12x12 room?

Buy about 158 sq ft: the 144 sq ft floor plus 10% for cuts and waste. With boxes that cover 20 sq ft, that's 8 boxes. Diagonal or herringbone layouts need 15–20% extra instead.

How much paint do I need for a 12x12 room?

With 8 ft ceilings, one door and one window, the walls are about 348 sq ft. Two coats at 350 sq ft per gallon is 2 gallons, so buy 2. Painting the ceiling as well brings it to 2.8 gallons.

How many square meters is 12 by 12 feet?

13.38 m². The room is 3.66 m by 3.66 m.

How many sheets of drywall for a 12x12 room?

About 17 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 12x12 Room?

A 12x12 room is 144 square feet (13.4 m²). Flooring with waste, paint, drywall and baseboard for a 12x12 room.

Updated October 12, 2026 · FloorFigures

Short answer

A 12x12 room is 144 square feet (12 × 12), or 13.4 m² and 16 square yards. Its perimeter is 48 ft. Flooring with 10% waste comes to about 158 sq ft.

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

Materials for a 12x12 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	144 sq ft	Wall to wall
Flooring to buy	158 sq ft (8 boxes)	10% waste, 20 sq ft boxes
Carpet	16.7 sq yd	12 ft roll, no seams
Wall area	348 sq ft	8 ft walls, less a door and a window
Paint, walls	2 gal (buy 2)	2 coats, 350 sq ft per gallon
Paint, walls and ceiling	2.8 gal	2 coats
Drywall	17 sheets	4x8 sheets, walls and ceiling, 10% waste
Baseboard	45 ft	Perimeter less a 3 ft door

What a 12x12 room is used for

Rooms this size are usually secondary bedrooms, home offices, dining rooms or small kitchens. A queen bed (60" × 80") takes up about 33 sq ft, or 23% of the floor.

12x12 in other units

Unit	Value
Square feet	144
Square meters	13.38
Square yards	16
Square inches	20,736
Acres	0.0033
Dimensions in meters	3.66 × 3.66 m

Rooms close to 12x12

Room	Square feet	Square meters
11x11	121	11.2
11x12	132	12.3
10x14	140	13
11x13	143	13.3
10x15	150	13.9
11x14	154	14.3
12x13	156	14.5
10x16	160	14.9

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 12x12 room?: A 12 by 12 foot room is 144 square feet: 12 × 12 = 144. That's 13.4 square meters or 16 square yards.
How much flooring do I need for a 12x12 room?: Buy about 158 sq ft: the 144 sq ft floor plus 10% for cuts and waste. With boxes that cover 20 sq ft, that's 8 boxes. Diagonal or herringbone layouts need 15–20% extra instead.
How much paint do I need for a 12x12 room?: With 8 ft ceilings, one door and one window, the walls are about 348 sq ft. Two coats at 350 sq ft per gallon is 2 gallons, so buy 2. Painting the ceiling as well brings it to 2.8 gallons.
How many square meters is 12 by 12 feet?: 13.38 m². The room is 3.66 m by 3.66 m.
How many sheets of drywall for a 12x12 room?: About 17 sheets of 4x8 drywall for the walls and ceiling with 8 ft walls, one door and one window, including 10% waste.