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Paint Calculator
This uses 350 square feet per gallon per coat and subtracts a typical door and window allowance.Enter your measurements
Wall area minus 40 ft² for openings, × coats, divided by 350 ft² per gallon.
How this estimate works
Wall area minus 40 ft² for openings, × coats, divided by 350 ft² per gallon.
Measure twice and use the same unit throughout. Product coverage, material density, installation patterns, and local requirements can change the quantity you need.