This paint calculator will estimate the amount of paint you will need to paint an interior room, including all the trim. This will be for one coat. For more than one coat, multiply total accordingly.   Enter your room dimensions: Feet Inches Room Length Room Width Room Height Height of Baseboard     How Many? Width of Trim (inches) Height (inches) Width (inches) Doors Windows Square feet per gallon TOTALS Paint Required to Apply One Coat on Walls Gallons Paint Required to Apply One Coat on Ceiling Gallons Paint Required to Apply One Coat on Trim Quarts © Copyright 2007 Maine Painting, LLC