How much paint for a 18x20 ceiling?
A 18x20 ft ceiling is a flat 360 sq ft. For two coats you need roughly 2.1 gallons.
For 2 coats
2.1 gallons (~3 cans)
360 sq ft of ceiling.
Calculate your ceiling paint
🖌️ Paint calculator
Paint needed for a 18x20 ceiling (chart)
| Coats | Paint needed | Cans |
|---|---|---|
| 1 coat | 1 gal | 2 |
| 2 coats | 2.1 gal | 3 |
| 3 coats | 3.1 gal | 4 |
Based on ~350 sq ft per gallon per coat. Use flat ceiling paint to hide imperfections.
Frequently asked questions
- How much paint for a 18x20 ceiling?
- About 2.1 gallons for two coats (360 sq ft), or 1 gallons for one coat.