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Paint Calculator

Estimate how many gallons of wall paint you need for a rectangular room.

Room length (ft)Room width (ft)Wall height (ft)DoorsWindowsNumber of coatsCoverage per gallon (sq ft)

0 gallons

Enter room dimensions to start.

Planning note

Actual coverage varies by paint, surface texture, color change and application method. This estimator subtracts approximately 20 sq ft per door and 15 sq ft per window.