Estimate gallons, coverage, and cost in seconds
Use this paint calculator to estimate total wall area, gallons needed, and project cost.
Enter room dimensions and paint specs to calculate gallons needed.
For a 12 ft × 15 ft room with 8 ft walls and 2 coats:
How many coats?
Usually 2 for full coverage.
Does coverage vary?
Yes, depends on paint and surface.
Do I include ceilings?
Add separately if needed.