How much flooring do I need for a 16x20 room?

Buy about 352 sq ft: the 320 sq ft floor plus 10% for cuts and waste. With boxes that cover 20 sq ft, that's 18 boxes. Diagonal or herringbone layouts need 15–20% extra instead.

How much paint do I need for a 16x20 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 4.9 gallons.

How many square meters is 16 by 20 feet?

29.73 m². The room is 4.88 m by 6.1 m.

How many sheets of drywall for a 16x20 room?

About 30 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 16x20 Room?

A 16x20 room is 320 square feet (29.7 m²). Flooring with waste, paint, drywall and baseboard for a 16x20 room.

Updated October 12, 2026 · FloorFigures

Short answer

A 16x20 room is 320 square feet (16 × 20), or 29.7 m² and 35.6 square yards. Its perimeter is 72 ft. Flooring with 10% waste comes to about 352 sq ft.

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

Materials for a 16x20 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	320 sq ft	Wall to wall
Flooring to buy	352 sq ft (18 boxes)	10% waste, 20 sq ft boxes
Carpet	44 sq yd	12 ft roll, 1 seam
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	4.9 gal	2 coats
Drywall	30 sheets	4x8 sheets, walls and ceiling, 10% waste
Baseboard	69 ft	Perimeter less a 3 ft door

What a 16x20 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 10% of the floor.

16x20 in other units

Unit	Value
Square feet	320
Square meters	29.73
Square yards	35.56
Square inches	46,080
Acres	0.0073
Dimensions in meters	4.88 × 6.1 m

Rooms close to 16x20

Room	Square feet	Square meters
16x16	256	23.8
15x18	270	25.1
14x20	280	26
12x24	288	26.8
16x18	288	26.8
15x20	300	27.9
18x18	324	30.1
18x20	360	33.4

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 16x20 room?: A 16 by 20 foot room is 320 square feet: 16 × 20 = 320. That's 29.7 square meters or 35.6 square yards.
How much flooring do I need for a 16x20 room?: Buy about 352 sq ft: the 320 sq ft floor plus 10% for cuts and waste. With boxes that cover 20 sq ft, that's 18 boxes. Diagonal or herringbone layouts need 15–20% extra instead.
How much paint do I need for a 16x20 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 4.9 gallons.
How many square meters is 16 by 20 feet?: 29.73 m². The room is 4.88 m by 6.1 m.
How many sheets of drywall for a 16x20 room?: About 30 sheets of 4x8 drywall for the walls and ceiling with 8 ft walls, one door and one window, including 10% waste.