Paint Calculator

Estimate how much paint you need for your walls, ceilings, doors, and windows.

Room dimensions

Room length

Room width

Wall height

Number of coats

Doors & windows

Their area will be subtracted from the wall area.

Doors

Quantity

Area each

Windows

Quantity

Area each

Paint settings

Paint coverage Square feet covered by one gallon for one coat.

Extra / waste

Estimated paint needed

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Paintable area

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Coats

—

Coverage

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Calculation breakdown

Gross wall area —

Doors & windows —

Paintable wall area —

Area for all coats —

Extra / waste —

Total coverage required —

Exact paint required —

Recommended purchase —

Note: Paint coverage varies by product, surface texture, application method, color, and number of coats. Check the coverage rate printed on your specific paint container before purchasing.