Free calculator

Room Paint Calculator

Gallons of paint and primer for any room, minus doors and windows.

Room length (ft)

Room width (ft)

Wall height (ft)

Doors

Windows

Coats

Paint the ceiling too

-Paintable area

-Paint needed

-What to buy

-Primer (1 coat)

Assumes 350 sq ft per gallon, 21 sq ft per door and 15 sq ft per window. Textured or freshly patched drywall drinks more - round up.

Want the full walkthrough? Read The Simple Way to Remove Wallpaper from Drywall for the step-by-step method, the supplies we used and the mistakes to avoid.