How Many Rooms Can I Paint with One Gallon of Paint?

De[ends on the size of the room but One gallon of paint will cover up to 400 square feet. Which is enough to paint one room like a bathroom. If the walls are unpainted drywall you will need slightly more paint as it will absorb more of the paint and if your walls have been patched or are a darker color than the the new paint you are using plan on applying two coats. For most rooms larger than the size of a typical bathroom two gallons will usually be your best bet