Roofing Calculator
Estimate roofing materials for your roof
ft
ft
Formula
Area = L × W × pitch_factor
Pitch factor adjusts flat area for roof slope. 1 square = 100 sq ft.
Examples
40×30, 6/12 pitch
~1,342 sq ft, 13.4 squares.
Frequently Asked Questions
About Roofing
Calculate roofing materials based on dimensions and pitch.