Paint guide
Paint Coverage Per Gallon Guide
Most interior paints cover between 300 and 400 square feet per gallon under normal conditions. Actual coverage depends on surface texture, paint quality, application method, and the number of coats.
Quick answer:
A gallon of paint typically covers about 350 square feet. Rough surfaces and unprimed drywall may require additional paint.
Use the Paint Calculator →Average Paint Coverage
| Paint Type | Coverage |
|---|---|
| Flat Paint | 350–400 sq ft |
| Eggshell | 350–400 sq ft |
| Satin | 300–350 sq ft |
| Semi-Gloss | 300–350 sq ft |
| Exterior Paint | 250–400 sq ft |
Coverage Formula
Paint Needed = Area ÷ Coverage Rate
Factors That Affect Coverage
- Rough or textured walls
- Dark colors being covered
- Fresh drywall
- Spraying instead of rolling
- Paint quality
- Primer usage
When Coverage Drops
Fresh drywall, porous surfaces, and dramatic color changes often reduce coverage significantly. In these situations, primer is recommended before painting.