Paint Calculator
How many gallons of paint for a room.
Buy this much paint
2
gallons
Wall area: 352 sq ft
Doors and windows: -51 sq ft
Paintable area × 2 coats: 602 sq ft
Exact gallons: 1.72
Assumes 350 sq ft per gallon coverage and standard door (21 sq ft) and window (15 sq ft) sizes. Round up to the nearest half gallon.
About
Enter wall dimensions and the tool tells you how much paint to buy. Accounts for doors, windows, and the number of coats. Default coverage is 350 sq ft per gallon, which is the industry standard for one coat.
How to use
- Enter wall length, width, and ceiling height.
- Subtract doors and windows.
- Pick number of coats.
FAQ
Should I always buy two coats worth?+
For dark colors, yes. For light over light, often one coat is enough. Primer counts as a coat too if you're going over a stained or unfinished wall.