How much flooring do I need for a 12x13 room?

Buy about 172 sq ft: the 156 sq ft floor plus 10% for cuts and waste. With boxes that cover 20 sq ft, that's 9 boxes. Diagonal or herringbone layouts need 15–20% extra instead.

How much paint do I need for a 12x13 room?

With 8 ft ceilings, one door and one window, the walls are about 364 sq ft. Two coats at 350 sq ft per gallon is 2.1 gallons, so buy 3. Painting the ceiling as well brings it to 3 gallons.

How many square meters is 12 by 13 feet?

14.49 m². The room is 3.66 m by 3.96 m.

How many sheets of drywall for a 12x13 room?

About 18 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 12x13 Room?

A 12x13 room is 156 square feet (14.5 m²). Flooring with waste, paint, drywall and baseboard for a 12x13 room.

Updated October 12, 2026 · FloorFigures

Short answer

A 12x13 room is 156 square feet (12 × 13), or 14.5 m² and 17.3 square yards. Its perimeter is 50 ft. Flooring with 10% waste comes to about 172 sq ft.

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

Materials for a 12x13 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	156 sq ft	Wall to wall
Flooring to buy	172 sq ft (9 boxes)	10% waste, 20 sq ft boxes
Carpet	18 sq yd	12 ft roll, no seams
Wall area	364 sq ft	8 ft walls, less a door and a window
Paint, walls	2.1 gal (buy 3)	2 coats, 350 sq ft per gallon
Paint, walls and ceiling	3 gal	2 coats
Drywall	18 sheets	4x8 sheets, walls and ceiling, 10% waste
Baseboard	47 ft	Perimeter less a 3 ft door

What a 12x13 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 21% of the floor.

12x13 in other units

Unit	Value
Square feet	156
Square meters	14.49
Square yards	17.33
Square inches	22,464
Acres	0.0036
Dimensions in meters	3.66 × 3.96 m

Rooms close to 12x13

Room	Square feet	Square meters
10x14	140	13
11x13	143	13.3
12x12	144	13.4
10x15	150	13.9
11x14	154	14.3
10x16	160	14.9
12x14	168	15.6
13x13	169	15.7

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 12x13 room?: A 12 by 13 foot room is 156 square feet: 12 × 13 = 156. That's 14.5 square meters or 17.3 square yards.
How much flooring do I need for a 12x13 room?: Buy about 172 sq ft: the 156 sq ft floor plus 10% for cuts and waste. With boxes that cover 20 sq ft, that's 9 boxes. Diagonal or herringbone layouts need 15–20% extra instead.
How much paint do I need for a 12x13 room?: With 8 ft ceilings, one door and one window, the walls are about 364 sq ft. Two coats at 350 sq ft per gallon is 2.1 gallons, so buy 3. Painting the ceiling as well brings it to 3 gallons.
How many square meters is 12 by 13 feet?: 14.49 m². The room is 3.66 m by 3.96 m.
How many sheets of drywall for a 12x13 room?: About 18 sheets of 4x8 drywall for the walls and ceiling with 8 ft walls, one door and one window, including 10% waste.