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Zinsser® SmartCoat Interior Wall Paint Calculator

Find out how much paint you will need to complete your project before start!

Living Room


gallons per coat
sq. ft.


gallons per coat
sq. ft.
Measure wall-to-wall width
Measure the height of your ceiling

Measuring Your Room

Our paint calculator creates a rough estimate for a two-coat application. Actual amounts will depend on surface condition and application methods. We recommend rounding up to the nearest foot to ensure needed coverage.