Paint Quantity Calculator

US gallons of paint for walls and ceilings.

Project measurements

Surface area (SF)

Number of coats

Paint coverage (SF per US gallon)

Waste allowance (%)

How it’s calculated

US gallons = surface area × coats ÷ coverage × (1 + waste ÷ 100). Round up gallons for purchasing.

Enter the coverage specified by your paint manufacturer. Surface condition and application method can affect actual coverage.

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