How Much Paint for a 12×12 room?
This calculator is pre-filled to estimate the paint for a 12×12 room. Change any field to match your project, and enter your local price for a precise cost.
Interior Paint calculator
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How to estimate interior paint
- One gallon covers about 350 sq ft per coat on smooth, primed walls; rough or new drywall drinks more.
- Two coats is standard. Plan a separate primer coat over new drywall or a big color change.
- Buy all wall paint in one tinted batch so the color is consistent across the room.
Frequently asked questions
How much paint do I need for a 12x12 room?
A 12x12 room with 8 ft ceilings has about 384 sq ft of wall. Two coats need roughly 2 gallons after a 10% deduction for openings.
How many square feet does a gallon of paint cover?
About 350 sq ft per coat on smooth, primed surfaces.