Calcometry
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Roof Pitch Calculator
Pitch = rise ÷ run. Enter rise and run in the same units (e.g., inches per foot).
Rise & run
Pitch angle
26.6°
Pitch ratio: 1:2
- Rise/run ratio
- 0.5
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A 6:12 pitch rises 6 inches for every 12 inches of horizontal run. Angle = arctan(rise/run).
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