Exterior Paint Calculator
Estimate exterior paint coverage, full containers, purchased capacity, material cost and labor allowance from wall perimeter, height, openings and coat count.
Default project preview
7 containers
Net wall area
1,220 ft²
Total coat area
2,440 ft²-coats
Purchased capacity
2,800 ft²-coats
Material cost
$336.00
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Net wall area = perimeter × height − openings. Coat area multiplies by the number of coats, then allowance is applied before full containers are rounded up.
BuildMeter Guides
Understand the measurements and assumptions
Use these visible reference guides before changing project inputs or planning allowances.
FAQ
Exterior Paint Calculator questions
Does rough siding use more paint?+
Yes. Textured or porous surfaces can reduce coverage significantly.
Should primer be counted as a paint coat?+
Primer is usually estimated separately because its coverage and price can differ.
Does this include soffits and trim?+
No. Add those measured areas or estimate them separately.