Paint Calculator
Exterior Paint Calculator
exterior paint calculator. Gallons for house exterior by wall dimensions, subtracting doors, windows, and unpainted areas.
The Short Answer: A 2,000 sq ft exterior (walls only) needs about 6 gallons for two coats at 350 sq ft/gallon. Rough surfaces (stucco, brick) absorb more paint — reduce coverage to 200-250 sq ft/gallon. Primer coat needed if color-changing or on bare wood.
Exterior House Paint Guide
Exterior paint estimation is trickier than interior because surfaces are rougher, coverage rates are lower, and you're painting much larger areas. Smooth siding gets 350 sq ft per gallon. Rough-sawn wood, stucco, and brick absorb more paint -- plan on 200-250 sq ft per gallon. This difference is significant: a 2,000 sq ft exterior takes 6 gallons on smooth siding but 8-10 gallons on stucco.
Don't forget trim, soffits, and fascia -- these are usually a different color and add 10-20% to your total paint quantity. Use an exterior acrylic latex for the body and a compatible trim paint for detail work. Always prime bare wood and any surface where the previous paint has peeled.
The Bottom Line
Free exterior paint calculator. Gallons for house exterior by wall dimensions, subtracting doors, windows, and unpainted areas. Accurate measurements prevent over-ordering and under-ordering — both cost you money and time. Enter your project dimensions above, add 10% for waste, and order with confidence.