How much paint for 400 sq ft?
Short answer
To cover 400 sq ft of wall with two coats you need about 3 gallons of paint (at ~375 sq ft per gallon).
Paint (2 coats)
3 gal
Paint cost
$90–$135
Coverage
800 sq ft
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Frequently asked questions
How much paint for 400 square feet?
About 3 gallons for two coats over 400 sq ft, at roughly 375 sq ft of coverage per gallon.
How many square feet does a gallon of paint cover?
About 350–400 sq ft per coat for most interior wall paint. Deep colors, rough textures, and bare drywall reduce coverage and may need primer.
How much will the paint cost for 400 sq ft?
Roughly $90–$135 in paint for 3 gallons at two coats. Premium paint costs more per gallon but often covers better.