Paint Calculator
Calculate how many litres of paint you need to cover your walls. Enter room dimensions and number of coats.
How to use this tool
- Enter room width, room length, wall height, number of coats and paint coverage in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your paint needed and the full breakdown beneath it.
Estimate how many litres of paint you need before your next painting project.
Frequently asked questions
- How much paint do I need for a room?
- Calculate the perimeter × wall height = wall area in m², multiply by the number of coats, then divide by the paint coverage (typically 10 m²/L).