Paint for a 11×20 room
2.5 gallons (buy 3 gal)
for two coats on 445 sq ft of wall: 8 ft ceilings, one door, two windows, 350 sq ft per gallon.
Paint for a 11×20 room by ceiling height
| Ceiling height | Wall area | 1 coat | 2 coats |
|---|---|---|---|
| 8 ft | 445 sq ft | 1.3 gal | 2.5 gal |
| 9 ft | 507 sq ft | 1.4 gal | 2.9 gal |
| 10 ft | 569 sq ft | 1.6 gal | 3.3 gal |
| 12 ft | 693 sq ft | 2 gal | 4 gal |
Wall area subtracts one door (21 sq ft) and two windows (15 sq ft each). Ceiling: 220 sq ft, 0.63 gal per coat.
How it’s worked out
- Perimeter: 2 × (20 + 11) = 62 ft.
- Wall area: 62 × 8 ft = 496 sq ft, minus 21 for the door and 30 for the windows = 445 sq ft.
- Two coats: 445 × 2 ÷ 350 = 2.54 gallons.
Change the numbers
Other room sizes
- 10×20 room
- 12×20 room
- 11×18 room
- 9×20 room
- 13×20 room
- 11×16 room
- 11×24 room
- 11×15 room
- 8×20 room
- 14×20 room
- 11×14 room
- 11×13 room
Questions
- How much paint do I need for a 11×20 room?
- About 2.5 gallons for two coats on the walls of a 11×20 room with 8 ft ceilings, one door and two windows: buy 3 gal. The ceiling takes another 0.6 gallons per coat.
- How many square feet of wall is a 11×20 room?
- 496 sq ft of wall with 8 ft ceilings, or about 445 sq ft after one door and two windows.
- How much does it cost to paint a 11×20 room?
- Paint for the walls costs about $120 at $40 a gallon. Professional painters typically charge $2 to $6 per square foot of floor area, about $440 to $1,320 here.