Paint consumption
Amount of paint for walls and ceilings, with number of coats.
Coverage is usually 6–10 m²/l per coat (see the label). An absorbent or dark surface uses more.
Enter the room dimensions – paint consumption is calculated instantly.
How to calculate paint consumption
First the area to paint is calculated: the room's perimeter × height (walls), plus the ceiling if applicable, minus windows and doors. Litres then follow from the area, number of coats, and paint coverage:
litres = area (m²) × number of coats ÷ coverage (m²/l)
Example: a 4 × 3 m room, 2.6 m high → walls (2×(4+3)×2.6) = 36.4 m², ceiling 12 m², minus 4 m² of windows and doors = 44.4 m². At 2 coats and a coverage of 8 m²/l that's 11.1 l of paint.
How many coats
A white, smooth wall usually needs just 2 coats. A significant colour change, a saturated shade, or an absorbent surface will need 3 coats. The first coat on a new surface is often thinned (a primer coat).
Note: consumption is approximate. The actual coverage depends on the paint, the surface, and the application technique. Follow the label.