Home & DIY tool
Paint Calculator
Enter your room dimensions to estimate how much paint to buy.
—Paintable wall area
—Paint needed (liters)
What's subtracted from the wall area
This estimate uses a standard door size (~1.85 m²) and window size (~1.5 m²) subtracted from the total perimeter × height figure — measure your actual openings for a more precise result if they're unusually large or small.