CALCULATOR · FREE免费 · Free
Paint Calculator
Enter the area to paint and the number of coats; the estimate assumes 350 square feet per gallon.
--Paint needed · gallons
Estimates only; verify on site before ordering or building.
Example
| Item | Value | Unit |
|---|---|---|
| Area | 1000 | sq ft |
| Coats | 2 | coats |
| Paint needed | 5.71 | gallons |
Where people go wrong
- Using floor area instead of wall area, and forgetting to subtract doors and windows.
- Estimating one coat when two are usually needed.
- Coverage varies by brand; check the label before buying.
FAQ
How much area does one gallon cover?
Common interior paint covers about 350 sq ft per gallon; actual coverage depends on brand and surface.
Should I subtract doors and windows?
Yes. Use the actual paintable area; doors and windows often remove 10 to 15 percent.