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DatumSpot

Roof Pitch Converter

Convert a roof slope between rise-in-12 (like 6:12), angle in degrees, and percent grade.

Rise per 12" of run. Accepts 6, 7.5, or a ratio like 6:12 or 6/16.

Pitch (rise-in-12)6:12
Angle26.6°
Grade (slope)50%

Pitch, angle, and grade

Roof slope is usually written as rise-in-12 — a 6:12 roof climbs 6" of rise for every 12" of horizontal run. That same slope can be expressed as an angle from horizontal or a percent grade:

Enter a pitch as a single number (6, 7.5) or a ratio (6:12, even an off-12 run like 6/16), or switch the input to degrees or percent to convert the other way.

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