Interior Finishing Calculators
Paint, drywall, tile and mulch for interior and finishing work.
Interior finishing materials — paint, wallpaper, drywall, and tile — are typically estimated from wall or floor area, but each has its own unit of sale (gallons, rolls, sheets, tiles) and its own waste allowance. Wallpaper and tile both need more waste than paint because of pattern-matching and cut losses, which is why each calculator in this category uses a different default waste percentage rather than one standard figure.
Paint Calculator
Estimate paint gallons needed for a room, minus doors and windows.
Tile Calculator
Estimate tiles and boxes needed for a floor or wall, with waste allowance.
Drywall Calculator
Estimate drywall sheets and joint compound for walls and ceilings.
Wallpaper Calculator
Estimate wallpaper rolls needed for a room, minus doors and windows.