Multiply the width of each wall by the room's height (e.g., a
You don't need to paint windows, doors, or large fixtures, so subtract their square footage from your total.
Subtract approximately 20 to 21 square feet per door.
How To Calculate How Much Paint To Buy For Interior Apr 2026
Multiply the width of each wall by the room's height (e.g., a
You don't need to paint windows, doors, or large fixtures, so subtract their square footage from your total.
Subtract approximately 20 to 21 square feet per door.
