paint coverage calculator
Paint Calculator
Estimate how much paint to buy before starting a room or project.
How it works
Litres needed = paintable area × coats ÷ coverage per litre. Subtract doors and large windows from total wall area when accuracy matters.
Three practical tips
- Use the coverage figure on the exact paint tin.
- Porous or textured surfaces usually need more paint.
- Keep a small matching reserve for touch-ups.
Should I include two coats?
Yes. Enter the number of full coats you expect to apply; primer is normally calculated separately.