Paint calculator

Find out how much paint a room needs, including doors, windows and extra coats.

UnitsRoom length (ft)Room width (ft)Ceiling height (ft)DoorsWindowsCoats of paintCoverage per gallon (sq ft)

Paint to buy (includes 10% extra)

2.3 gallons

Wall area to paint
366 sq ft

Area with all coats
732 sq ft

Without the extra
2.1 gallons

Walls only, not ceilings. Assumes a standard door (about 20 sq ft or 1.9 m²) and window (about 15 sq ft or 1.4 m²). Check the coverage printed on your paint can. Estimates only.