paint

How Much Paint Do I Need for a Room? Complete Calculator Guide

How Much Paint Do I Need for a Room? Complete Calculator Guide One gallon of paint covers approximately 350-400 square feet of wall space with one coat. For a standard 12x12 room with 8-foot ceilings, you'll need about 1.5 gallons for two coats after subtracting doors and windows. But the actual amount depends on your wall texture, paint type, and color change. Last summer I painted four bedrooms and a hallway totaling 1,860 square feet of wall space. My calculation called for 10 gallons with two coats, but the knockdown texture in the master bedroom ate through paint so fast I needed an extra gallon just for that room. The entire project cost $480 in premium eggshell paint -- and I learned the hard way that textured walls can increase your paint needs by 20-25% over the manufacturer's label estimate. Use our Paint Calculator(/construction/paint-calculator) to get an instant, accurate estimate...