🎨 Paint Calculator

Calculate exactly how many litres of paint you need for your room.

Room width (m)

Room length (m)

Wall height (m)

Number of doors

Number of windows

Number of coats

Coverage (m²/litre)

Enter the room dimensions

How many coats of paint do I need?

For light colours over white, 2 coats are usually enough. For dark colours or covering stains, you may need 3 coats.

What is the coverage of standard paint?

Most standard interior paints cover 10–12 m² per litre per coat. Textured or masonry paints typically cover less — check the tin for exact coverage.

Should I buy extra paint?

Yes, always buy 10–15% more than calculated. Keep some spare for future touch-ups — matching paint from a different batch can be difficult.