Commercial-intent calculator
Roofing Calculator
Estimate roof area, squares, and bundle count with editable waste.
Calculator inputs stay on this page.
Estimate only. Adjust inputs for your product and check local requirements before buying or building.
Roof area1252.2 sq ft
Area with waste1377.4 sq ft
Roofing squares13.77 squares
Bundles needed42 bundles
Constants status
Market start: United States
Profile: United States
GAF roofing square and bundle guide: Supports the roofing square basis and the common three-bundles-per-square estimating default. Bundle coverage remains editable because product lines vary. Verified 2026-09-03.