How to use it
- Enter wall dimensions and wall count.
- Enter coats and coverage in square meters per liter.
- Subtract openings, add an optional waste factor and calculate.
Paint Calculator
Estimate liters of paint from wall dimensions, coats, coverage and openings.
Important: This calculator provides material estimates only. It is not structural, safety, legal, or building-code advice. Always confirm with a qualified professional before construction.
About the Paint Calculator
This calculator estimates paintable wall area and paint quantity from product coverage and the planned number of coats.
Estimation formula
Paintable area equals total wall area minus door and window area. Liters equal paintable area × coats ÷ coverage per liter.
Example
Four 4 m × 2.5 m walls have 40 m² gross area. After subtracting 4 m² of openings, two coats at 10 m² per liter require about 7.2 liters before waste.
Notes
Actual coverage varies with surface texture, preparation, application method and product specifications. Use the manufacturer coverage figure.