Roof Pitch
Pitch as fraction, degrees, and percent.
Example
You enter
- Rise (in) 6
- Run (in) 12
- Mode rise_run
You get
- Degrees 26.57
- Percent 50 %
- Pitch (in/ft) 6
Details, formula, and sources
Pitch = rise / run, expressed as N/12 (carpenter form), degrees (atan2), and percent. Conversions for fall over distance.
Classical geometry; IRC 2021 §R905 references for slope minimums by roof-cover class.
Free read-only access at codes.iccsafe.org.
Estimate. AHJ and licensed structural engineer govern.
Field names used by the API: rise, run, mode, degrees, percent, pitch_in_per_ft