Roof Pitch Calculator › 8:12 pitch
Roofing calculatorRoof Pitch Calculator: 8:12 pitch
Pre-configured estimate for Rise: 8 in per 12 in run · Building width (span): 30 ft. Adjust any field to recalculate.
About this size
This page pre-fills the roof pitch calculator for a 8:12 pitch job — one of the most common sizes people search for. The figures update live if your project differs, and the assumptions behind them are explained on the main roof pitch calculator page.