Roofing Calculator
Footprint Length
(feet)
Footprint Width
(feet)
Roof Pitch (rise per 12)
Roofing Type
3-tab asphalt (100 sq ft/bundle)
Architectural asphalt (33.3 sq ft/bundle)
Premium / dimensional asphalt (25 sq ft/bundle)
Metal panel — 2×8 ft (16 sq ft/panel)
Roof Complexity
Simple — gable (10% waste)
Complex — hips & valleys (15% waste)
Bundles / Panels Needed
45
Underlayment Rolls
4
Ridge Cap (linear ft)
40
Powered by
AceCalc
— free roofing calculator at acecalc.com