∠PROPERTY
Roof Pitch Calculator
Calculate roof pitch, slope angle and slope factor from rise and run.
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Formula
Pitch = rise:run. Angle = arctan(rise ÷ run). Slope factor = √(1 + (rise ÷ run)^2).
Pitch = rise:run. Angle = arctan(rise ÷ run). Slope factor = √(1 + (rise ÷ run)^2).
How it works
1
Enter rise and run.
2
The calculator reduces the pitch ratio conceptually and calculates angle.
3
Review pitch, degrees and slope factor.
Important notes
Roof pitch is commonly expressed as rise over 12 inches of run.