SKY EDIFICE is a very experienced & licensed painting contractor. We have coded this paint calculator to allow fellow painters in the industry and homeowners to know how many paint gallons they need before beginning a project.
Directions for Calculations: Input feet and inches.
1st Step: Calculate Height
Measure the height from the bottom of the baseboard to the ceiling.
2nd Step: Calculate Length and Width
Measure the Length of two walls and add them together. Ideally, start from the left and work to the right. Once you finish adding the walls, you will multiply by 2 (We multiply by 2 because this is the number of walls left to measure, in the beginning, we added 2 walls. (This only works for a room with 4 walls.)
3rd Step: Calculate Paint Need For Walls
Multiple the Height x Length.
4th Step: Calculate Paint Need For Ceilings
If you are painting the ceiling, keep reading. Now multiply the length x width.
5th Step: Total Paint Gallons Needed
Add Total Walls (Step 3) + Total Ceiling (Step 4), then divide by 400.
More from SKY EDIFICE
Most paint gallons have a coverage of 350-400 square feet. For this article, we used 400 square feet of coverage. The coverage area depends on 3 factors: the paint manufacture, the surface to be painted, and the painter’s experience. Too often, new painters apply too much paint to the surface. This action by inexperienced painters will make wall surfaces very thick with paint, which you won’t notice, but the next painter you hire will. The next painting contractor you hire will most likely charge you a lot because they will have to work twice as hard to remove and scrape a lot of the paint. Our paint calculator calculates the number of paint gallons needed for one coat only. About 98.9% of the time, 3 coats are required.
Please email us if you found this paint calculator helpful, if it was too hard to use or if you think it could benefit from more features.
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