This is a free preliminary check, not a sealed calculation. For a stamped, project-specific pergola, canopy, or wind load calculation, visit windcalculations.com. Use Print / PDF below the form for a shareable copy.
Live Pergola Diagram
Updates as you type — verify length, width, posts, bays, beams, purlins & height before printing.
Roof Framing Plan
Long Elevation
End Section
Fill the form. Results render here in real time.
Before you use this tool
This is a preliminary screening calculator for open-roof aluminum pergolas — for education and early feasibility only.
It is not engineering advice and not a sealed design. No engineer has reviewed your inputs or results.
Wind, member, anchorage, and footing checks use simplified screening methods. Your jurisdiction's adopted code and your actual site conditions govern.
Anchoring or building a real structure from these numbers without review by a licensed Professional Engineer is unsafe and may be illegal.
The software is provided as is, without warranty. You accept full responsibility for any use of the results.