Roof Pitch Calculator
Calculate pitch (X/12), angle in degrees, and roof multiplier from rise and run.
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Common roof pitches
Low slope: 1/12–3/12 (2.4°–14°). Conventional: 4/12–9/12 (18°–37°). Steep: 10/12–12/12 (40°–45°). A 6/12 pitch is the most common residential pitch in North America.