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Paint Calculator
Calculate exactly how much paint you need based on wall dimensions, coverage rate, and number of coats.
● Live calculatorInputs
Primary result
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Gallons = (height × width × walls × coats) ÷ coverage
How this calculator works
Calculate exactly how much paint you need based on wall dimensions, coverage rate, and number of coats.
The calculator keeps the inputs visible alongside the result so you can compare assumptions, change one value at a time, and copy or print the current estimate.
Frequently asked questions
Should I prime the walls?
Priming helps with dark colors, stains, and bare drywall.
How many coats are typical?
Two coats often provide more consistent coverage, but surface and paint matter.