Paint Calculator
How much interior paint you need by room size and number of coats.
Paint to buy
3 gal
Wall area
384 sq ft12×12 room with 8 ft walls
Paint (2 coats)
2.2 gallonsbuy 3 gal — rounding covers doors & windows
Coverage
350 sq ft / gallonper coat, smooth interior surface
Paint cost (est.)
$120~$40/gal mid-grade
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