Paint Calculator
Estimate liters for walls, coats and waste.
Estimate liters for walls, coats and waste.
Estimate liters for walls, coats and waste. Fill in the fields above and the result updates instantly, together with the formula behind it.
Liters = (paintable area − openings) × coats ÷ coverage × (1 + waste/100)
45 m², 2 coats, 10 m²/L coverage and 10% extra needs 9.9 L.
Use manufacturer coverage and allow for texture, absorbency and application method.
Liters = (paintable area − openings) × coats ÷ coverage × (1 + waste/100). Example: 45 m², 2 coats, 10 m²/L coverage and 10% extra needs 9.9 L.
You enter: Paintable area (m²); Number of coats; Coverage (m² per liter); Extra (%); Doors/windows excluded (m²). An example value is shown in each empty field, and the result appears as soon as the numbers are valid.
Openings are not painted, so removing their area gives a more realistic liter count. Very small openings can be ignored, and dark colors or rough walls may need an extra coat.
Yes. Use Copy to copy the result or full example. Share creates a link that puts your chosen values into the URL fragment so another person can reproduce the calculation. Your named saves and recent history stay in your own browser.