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Convert roof slope between pitch, ratio, percent, angle and rise/run — instant conversion for builders.
Convert roof slope between pitch, ratio, percent, angle and rise/run — instant conversion for builders.
Enter values above and click Calculate — results will appear here with the formula explained.
Roof slope can be expressed as ratio (6:12), decimal (0.5), percent (50%), or angle (26.57°). They are all the same geometry, just different units.
Percent is slope×100. Angle uses arctangent. Pitch is rise:run normalized to 12.
To use the Roof Slope Calculator, enter rise, run above for an instant result with full breakdown and formula (Slope = rise/run; Percent = slope×100; Angle = atan(slope) in degrees; Pitch = rise:run). Adjust values live to compare scenarios, then check the worked example and FAQs below for practical tips and costly mistakes to avoid.
Convert roof slope between pitch, ratio, percent, angle and rise/run — instant conversion for builders. Formula: Slope = rise/run. Example: 6 rise, 12 run = 0.5 slope = 50% = 26.57° = 6:12 pitch.
Roof slope can be expressed as ratio (6:12), decimal (0.5), percent (50%), or angle (26.57°). They are all the same geometry, just different units.
Percent is slope×100. Angle uses arctangent. Pitch is rise:run normalized to 12.
To use the Roof Slope Calculator, enter rise, run above for an instant result with full breakdown and formula (Slope = rise/run; Percent = slope×100; Angle = atan(slope) in degrees; Pitch = rise:run). Adjust values live to compare scenarios, then check the worked example and FAQs below for practical tips and costly mistakes to avoid.
6 rise, 12 run = 0.5 slope = 50% = 26.57° = 6:12 pitch.
Formulas are standard public references (see our methodology). External standards are cited in the text where they apply.
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