Exterior Siding Paint Calculator

Calculate how much paint you need for your home's exterior siding

Siding Dimensions

Wall Length (ft)

Wall Height (ft)

Number of Coats

Surface Type

Total Area —

Gallons Needed —

Estimated Cost —

Measure each wall of your home separately and add them together for total exterior area.
Subtract window and door areas from the total. A standard window is about 15 sq ft; a door is about 20 sq ft.
Use 100% acrylic latex exterior paint for the best durability and weather resistance.
Pressure-wash siding and scrape off peeling paint before applying new coats.
Textured siding like stucco or wood shakes absorbs more paint than smooth surfaces.
Avoid painting in extreme heat, direct sun, or when rain is expected within 4 hours of application.