Paint Quantity Calculator
Instant · no signup neededWork out how much paint you need — and its approximate cost, if you enter a price per liter — based on your wall area and number of coats.
Tip: a quick way to estimate wall area is room perimeter × wall height, minus roughly 15–20 sq ft per door or window. Based on a practical coverage rate of 120 sq ft per liter per coat on textured walls (theoretical tin coverage is usually higher). Actual coverage varies by paint brand, wall texture, and application method.
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Frequently asked questions
This calculator uses a practical coverage rate of 120 square feet per liter per coat on textured walls. Theoretical tin coverage figures printed on paint cans are usually higher than what's achievable in practice, especially on textured or previously painted walls.
A quick method is room perimeter × wall height, minus roughly 15–20 square feet per door or window to account for openings.
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