Paint Calculator — Litres Needed for a Room
Enter the room dimensions and the number of coats to see the wall area and the litres of paint to buy.
Paint Calculator
Liters needed to paint a room
Paint needed9.0 L
Wall area45.0 m²
Ceiling area20.0 m²
Floor perimeter18.0 m
How it works
- Typical emulsion covers 10–12 m² per litre per coat.
- Two coats are standard; bare plaster may need three.
Frequently asked questions
Should I subtract doors and windows?
For small rooms the extra paint is a useful buffer. For large glazed walls, deduct their area from the total before buying.
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