Lawn & Yard
Paint Calculator
Enter your surface dimensions, number of coats, and paint coverage to see exactly how many gallons to buy.
You'll need
1.25 gallons
How much paint do I need?
Most paints cover around 350 to 400 square feet per gallon on a smooth surface, though rougher textures like fencing or stucco can reduce coverage significantly.
Two coats are standard for most exterior projects, especially when changing colors or painting bare wood, which roughly doubles the total gallons needed compared to a single coat.
Check your specific paint can for its exact coverage rating, since formulas vary between brands and finishes (flat, satin, semi-gloss).
Frequently asked questions
Most paints cover 350 to 400 square feet per gallon on a smooth surface. Textured or porous surfaces like rough wood or stucco typically reduce coverage.