Roofing Material Calculator
Calculate roofing materials needed based on roof area and pitch.
Result
Roofing Calculator Formula
Roof Area = Length × Width × Pitch Factor
Squares = Total Area / 100
A "roofing square" = 100 sq ft.
Roofing Calculator Example Calculation
Roof: 40ft × 30ft, Medium pitch, 10% waste
Area = 40 × 30 × 1.118 = 1,342 sq ft
With waste = 1,476 sq ft = 14.8 squares
Frequently Asked Questions about Roofing Calculator
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