HOW IT IS CALCULATED
Estimate paint for four room walls
Calculate wall area from room perimeter and height, then account for coats and paint coverage.
Instant resultClear formulaRuns locally
01Values
022 × (L + W) × H × coats ÷ coverage
03Result
More coats increase paint requirement proportionally.
Doors and windows are not subtracted
The current estimate uses the full four-wall area, so large openings can make the result conservative.
02
In short
What logic does the calculator use?
2 × (L + W) × H × coats ÷ coverage
Example?
More coats increase paint requirement proportionally.