Results are planning estimates. Actual material requirements vary by product, installation method, site conditions, waste, and local rules. Verify product instructions and local requirements. This tool does not determine structural safety, footing depth, permit requirements, installation requirements, or code compliance. Have critical work reviewed by a qualified professional.
What this site does
It performs transparent material-planning arithmetic from the measurements and assumptions entered by you.
What this site does not do
It does not provide structural engineering, safety certification, permit advice, building-code interpretation, installation instructions, live product inventory, or guaranteed quantities.