Paint Calculator
Estimate how many litres of paint you need for any room — no guesswork, no half-empty tins.
You'll need roughly
Tell us the room size and we'll work out how much paint to buy.
How it works
We calculate the total wall surface area as 2 × (width + length) × height, subtract roughly 1.5 m² per door and window, then divide by typical paint coverage of 10 m² per litre and multiply by the number of coats.
This gives a realistic estimate for standard emulsion. Textured walls, porous surfaces, or strong colour changes may require more.