Coverage Calculator

Siding Calculator

1. Enter the calculations for the total wall area (length x height):
Total Length:
Total Height:
2. Subtract square footage of openings for windows and doors:
Doors:
Windows:
3. Select the appropriate factor for either linear or surface measurement:
Nominal Width
(inches)
Dressed Width
(inches)
Exposed Face Width
(inches)
Linear Feet Factor Surface Measure
4 3 1/2 2 1/2 4.80 1.60
6 5 1/2 4 1/2 2.67 1.33
8 7 1/2 6 1/2 1.85 1.23
10 9 1/2 8 1/2 1.41 1.18
12 11 1/2 10 1/2 1.14 1.14
Result
10% is added to accomodate trim.
Linear Feet:
Surface Measure: