Paint Calculator

Paint needed to cover the walls of a room.

Room length

Room width

Wall height

Doors and windows

Coats

How it works

Wall area = 2 × (length + width) × height, minus 1.8 m² per door or window. Paint covers about 10 m² per liter per coat.

Is this calculator free?

Yes. No signup is needed and nothing you enter is stored.

Is the result exact?

Results are rounded for display. For financial, medical, or legal decisions, confirm with a professional.

Do my numbers leave my device?

No. The calculation runs in your browser.