Free tool

Paint Calculator

Enter your room measurements and find out exactly how much paint to buy — no more half-empty cans.

Room length (ft)

Room width (ft)

Wall height (ft)

Coats of paint

Doors (≈21 sq ft each)

Windows (≈15 sq ft each)

You will need about

0 gallons

0 litres · 0 sq ft of wall

Based on ~350 sq ft coverage per gallon per coat, rounded up. Textured or dark walls may need a little extra.