Paint Coverage Calculator | Square Feet per Gallon

Estimate whether one gallon, two gallons, or a larger order can cover your project. Coverage depends on paint product, surface texture, color change, coats, and waste.

Typical coverage range

Many interior paints cover about 300 to 400 square feet per gallon. Rough walls, unprimed drywall, textured surfaces, and dramatic color changes can reduce coverage.

How CoatWise uses coverage

The main calculator defaults to 350 square feet per gallon. You can change that value to match the product label on the paint you plan to buy.

Open the calculator