Calculators/Roofing
Roofing Calculators
Roof area, pitch multipliers, shingle bundles and squares.
Roofing CalculatorRoof area, squares and shingle bundles from the footprint.Roof Pitch CalculatorConvert roof pitch to angle, slope and area multiplier.Gutter CalculatorGutter length, downspouts and roof drainage load.
A roof is always larger than the footprint it covers, and how much larger depends entirely on the pitch. These calculators apply the correct pitch multiplier before working out materials.