Paint Calculator
Estimate gallons of paint for a room's walls after taking out doors and windows.
Paint needed
1.90 gallons
- Gallon cans to buy
- 2
- Paintable area
- 333 ft²
- Liters
- 7.2 L
Show the work
Wall area minus the doors and windows
area = length × height − doors × door area − windows × window area
48 × 8 − 1 × 21 − 2 × 15 = 333 ft²
Gallons: area × coats ÷ coverage per gallon
gallons = area × coats ÷ coverage
333 × 2 ÷ 350 = 1.90 gallons
How it works
Paint area = wall length × height − doors − windows; gallons = area × coats ÷ coverage
Questions
- How does the paint calculator work?
- Paint area = wall length × height − doors − windows; gallons = area × coats ÷ coverage.
- What do I need to enter?
- Total wall length (all walls), Wall height, Doors, Windows, Coats, Area per door, Area per window, Coverage per gallon. Optional fields can be left blank.
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