Question 1

How much paint do I need per square foot?

Accepted Answer

One gallon of paint typically covers 350-400 square feet (32-37 m²) with one coat. For two coats, plan for about 175-200 sq ft per gallon.

Question 2

How many coats of paint should I apply?

Accepted Answer

Most projects need 2 coats for even coverage. You may need 3 coats when painting over dark colors with light paint or using low-opacity colors like reds and yellows.

Question 3

Should I subtract windows and doors?

Accepted Answer

Yes. Subtract the area of windows and doors from the total wall area for a more accurate paint estimate. A standard door is about 20 sq ft and a standard window about 12 sq ft.

Question 4

Does ceiling paint work the same way?

Accepted Answer

Ceiling paint coverage is similar (350-400 sq ft per gallon). Calculate ceiling area as length × width of the room.