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Roof Pitch Calculator

Calculate roof pitch ratio, angle in degrees, pitch factor, and rafter length per foot of run. Used for both carpentry and roofing.

Vertical rise in inches per 12 inches of run (e.g., 6 for 6:12 pitch)

Typically 12 for standard pitch expression (rise:12)

Pitch Ratio6:12
Angle26.6deg
Pitch Factor1.118
Rafter Length Per Foot of Run1.118ft/ft

Common Pitch Reference

For reference only. Verify with your local building code and a licensed professional before making decisions.

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