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7/12 roof pitch in degrees

A 7-in-12 roof — 7 inches of rise for every 12 inches of run — as an angle, a percent grade, a slope ratio, and the rafter length it adds per foot of run.

7/12 pitch =

=30.26°

Angle

30.26°

Percent grade

58.33333%

Slope ratio

0.583333

Rafter / ft of run

1' 1-7/8"

What it means on the roof

Set a speed square to 30.26° for the plumb and seat cuts. Every foot of horizontal run adds 1' 1-7/8" of common-rafter length, so a run of 10 ft makes a rafter about ten times that. The percent grade (58.33333%) is the same slope a road sign or a laser level reads.

Nearby pitches

Pitches around 7/12

Pitch	Angle	Grade	Rafter / ft run
4/12	18.43°	33.33333%	1' 0-5/8"
5/12	22.62°	41.66667%	1' 1"
6/12	26.57°	50%	1' 1-7/16"
7/12	30.26°	58.33333%	1' 1-7/8"
8/12	33.69°	66.66667%	1' 2-7/16"
9/12	36.87°	75%	1' 3"
10/12	39.81°	83.33333%	1' 3-5/8"

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