Siding Calculator
Estimate the siding area, number of squares, panels or cartons, and material cost for exterior walls. Account for doors, windows, gables, and waste allowance.
Enter project dimensions
Result
Enter your dimensions to estimate siding materials.
Measure every wall
Add the lengths of all exterior walls, then multiply by the average wall height to calculate the gross wall area.
Subtract openings
Remove the combined area of doors and windows, then add any triangular gable area that also needs siding.
Allow for waste
A 7–12% waste allowance is common for cuts, overlaps, damaged pieces, and future repairs.
Frequently asked questions
What is a square of siding?
One siding square equals 100 square feet of material coverage.
Should I subtract windows and doors?
Yes for a detailed estimate. For very small openings, some installers leave them included to provide extra material for cuts.
How much waste should I add?
Simple rectangular projects may use about 7–10%. Complex walls, many corners, or angled cuts may require 10–15%.
Does this include labor and accessories?
No. The cost result is for siding cartons only. Add starter strips, trim, soffit, fasteners, house wrap, delivery, taxes, and labor separately.
Results are estimates generated locally in your browser from standard geometry, material yield and waste assumptions. They are for planning purposes only, not engineering, structural, code or supplier advice. Confirm dimensions, material strength, delivery constraints and local building codes with a licensed professional before purchasing or building. VisionVix accepts no liability for decisions based on this tool's output.
