Don’t know how much paint to buy for your next project? Generally, you’ll need one gallon of paint for every 350 square feet of surface area.
To ensure you don’t waste time or money, take a rough measurement of the walls, then use an online paint calculator (like the one from Sherwin-Williams) and type in the room’s dimensions. The tool will also ask for measurements of windows, doors, and trim to come up with a more precise total.
Whatever the number, buy an extra quart for touch-ups (a new batch mixed later might not match perfectly).
Ready to get started? See how to pick paint.