Siding Cost Calculator
Estimate siding area, full cartons, purchased coverage, material allowance, labor and total project cost from wall dimensions and editable product assumptions.
Default project preview
$11,380.00
Net siding area
1,380 ft²
Order area
1,518 ft²
Purchased coverage
1,600 ft²
Siding material
$4,000.00
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Input and output guide
What each value means
The labels and units below are part of this calculator’s visible methodology. Replace every default with measurements or product data from the actual project.
Exterior wall perimeter
Enter this project assumption in ft. The current imperial default is 160 ft.
Average wall height
Enter this project assumption in ft. The current imperial default is 9 ft.
Additional gable area
Enter this project assumption in ft². The current imperial default is 160 ft². Minimum: 0.
Doors and windows
Enter this project assumption in ft². The current imperial default is 220 ft². Minimum: 0.
Cut allowance
Enter this project assumption in %. The current imperial default is 10 %. Minimum: 0. Maximum: 50.
Coverage per carton
Enter this project assumption in ft². The current imperial default is 100 ft².
Price per carton
Enter this project assumption in a unitless value. The current imperial default is 250. Minimum: 0.
Trim and accessory allowance
Enter this project assumption in % of siding. The current imperial default is 12 % of siding. Minimum: 0. Maximum: 50.
Installation rate
Enter this project assumption in per ft². The current imperial default is 5 per ft². Minimum: 0.
How to read the outputs
Net siding area
openings deducted. Default preview: 1,380 ft².
Order area
cut allowance included. Default preview: 1,518 ft².
Purchased coverage
full cartons. Default preview: 1,600 ft².
Siding material
carton cost. Default preview: $4,000.00.
Trim allowance
accessory percentage. Default preview: $480.00.
Labor allowance
entered area rate. Default preview: $6,900.00.
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 area = perimeter × wall height + gable area − openings. Order area applies waste, cartons round up, and total cost adds siding, accessory allowance and entered labor.
FAQ
Siding Cost Calculator questions
Should all window area be deducted?+
Large openings are normally deducted, while small openings may be left in the waste allowance.
What does the trim allowance cover?+
It is a budgeting percentage for corners, starter pieces, channels and related accessories, not a detailed takeoff.
Does the estimate include removing old siding?+
No. Demolition and disposal should be added separately.