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How Much Paint for a 10×12 Room?

A 10×12 room with standard 8 ft walls has about 352 sq ft of wall — roughly 3 gallons for two coats. Adjust ceiling height and coats below.

Paint to buy
3 gal
Wall area
352 sq ft10×12 room with 8 ft walls
Paint (2 coats)
2.0 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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