Roofing Squares Calculator
Free result — no account.
Formula
Squares = (roof area × pitch factor × (1 + waste%)) ÷ 100. One square = 100 sq ft.
Worked example
1800 sq ft footprint factor 1.1, 10% waste → about 21.8 squares.
Free result — no account.
Squares = (roof area × pitch factor × (1 + waste%)) ÷ 100. One square = 100 sq ft.
1800 sq ft footprint factor 1.1, 10% waste → about 21.8 squares.