Exterior Paint for a 40×60 House
A 40×60 house with 9 ft walls has about 1,800 sq ft of wall — roughly 12 gallons for two coats. Subtract big windows below for a tighter number.
Paint to buy
12 gal
Wall area
1,800 sq ft40×60 footprint, 9 ft walls (gross)
Paint (2 coats)
12.0 gallonsbuy 12 gal
Coverage
300 sq ft / gallonper coat, exterior surface
Paint cost (est.)
$540~$45/gal exterior
Doing this for work? Estimate the whole job in minutes.
JRIQ turns plans and site photos into full material + labor estimates with AI — built by the team behind these calculators.
Try it free →
Want the full guide — tools, step-by-step, common mistakes and FAQ? See the Exterior Paint Calculator.