One of the most typical questions regarding paint is, “How much paint do I need?” Use the paint calculator below and our custom video tips to find out exactly how much paint you need for your next painting project.
Rule-of-thumbWith some simple calculations, you will know how much paint to buy so you don’t need to waste time with extra trips to the store, and you won’t over-spend on too much paint.
The typical rule-of-thumb is one gallon for about every three to four hundred square feet. However, some paint formulas and wall textures may require more specific amounts.
How Much Paint Per Square Foot?
- One gallon can of paint will cover up to 400 square feet, which is enough to cover a small room like a bathroom.
- Two gallon cans of paint cover up to 800 square feet, which is enough to cover an average size room. This is the most common amount needed, especially when considering second coat coverage.
- Three gallon cans of paint cover up to 1200 square feet. This is enough to cover a large room or a couple of average-sized rooms adjoining each other. You may want to consider this extra can if you are doing a room with vaulted ceilings.
- Four gallon cans of paint cover up to 1600 square feet, which is enough to cover several average rooms. You might consider this amount if you have a great room or some other very large room.
Use the right toolsThe right roller helps to provide the correct coverage needed, and better looking results. The typical size needed is a 9-inch roller with a 3/8-inch inch nap for smooth walls, or a 1/2-inch nap for textured walls.
To avoid leaving any visible roller lines, continue your final stroke all the way down the wall. Don't be afraid to be generous with the paint, you want to completely cover your wall, in order to avoid future touch-ups.
find the perfect paint color for your room