Paint Calculator

Calculate how many gallons of paint you need for your room, accounting for doors, windows, and number of coats.

Room Length (ft)

Room Width (ft)

Ceiling Height (ft)

Number of Doors

Number of Windows

Number of Coats

Cost per Gallon ($) - Optional

Specify the number of coats to get an accurate gallon count whether you are priming, doing a single coat, or applying multiple coats.

Automatically subtracts standard door and window areas so you do not overbuy paint for unpaintable surfaces.

Add your paint price per gallon to instantly see the total cost and plan your painting budget before heading to the store.

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