16×16 room: paint by wall height
| Wall height | Paintable sq ft | Gallons (2 coats) | Buy |
|---|---|---|---|
| 8 ft | 462 | 2.64 | 3 |
| 9 ft | 526 | 3.01 | 4 |
| 10 ft | 590 | 3.37 | 4 |
1 door and 2 windows deducted; 350 sq ft per gallon.
Worked example
Perimeter: 2 × (16 + 16) = 64 ft. With 8 ft walls: 512 sq ft, minus 20 (door) and 30 (two windows) = 462 sq ft. Two coats: 924 ÷ 350 = 2.64 gallons. The ceiling adds 256 sq ft per coat (about 1.46 gallons for two coats).
Frequently asked questions
How many gallons to paint a 16×16 room?
About 2.64 gallons for two coats on 8 ft walls (buy 3).