How many gallons for a 12×12 room?
A 12×12 room with 8 ft ceilings has about 384 sq ft of wall area. With two coats and 350 sq ft per gallon coverage, you need roughly 2.2 gallons — buy 3 gallons to be safe.
How Much Paint Do I Need?
The biggest question at the paint counter: how many gallons? Enter your room size and we round up so you do not run short mid-project.
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Project settings
Default 10% for touch-ups
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Frequently asked questions
How much does a gallon of paint cover?
Most interior latex covers 350–400 sq ft per gallon on smooth walls. Check your can — flat and textured surfaces cover less.
Do I need primer and paint?
New drywall, stains, or bold color changes usually need primer first. Run the calculator twice — once for primer, once for topcoat — or switch paint type in settings.
Paint Calculator · https://paint-calculator.ca