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Roof Pitch

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Roof pitch or slope refers to the amount of rise a roof has compared to the horizontal measurement of the roof.

The picture below shows the pitch of a 7-12 roof slope meaning that for 12" of horizontal measurement (roof run) the vertical measurement (roof rise) is 7".

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. If this isn't practical then perform the same measurement on the underside of the roof.

7/12 Roofing Pitch

Roof Pitch Examples

Roof Pitches

12/12 pitch angle 45°

11/12 pitch angle 42.51°

10/12 roof pitch angle 39.81°

9/12 roof pitch angle 36.87°

8/12 - roof pitch degrees 33.69°

7/12 - 30.26°

6/12 - 26.57°

5/12 - still walkable 22.62°

4/12 - standard roof pitch 18.43°

3/12 typical in southern climates 14.04°

2/12 - low roof pitch 9.46°

Roof Pitch Table
1 12	4.76°
2 12	9.46°
3 12	14.04°
4 12	18.43°
5 12	22.62°
6 12	26.57°
7 12	30.26°
8 12	33.69°
9 12	36.87°
10 12	39.81°
11 12	42.51°
12 12	45°

Roof Pitch Calculator

If none of the above is working for you this tool will convert pitch to angle or angle to pitch for half degree roof slope calculations.

Roofing Pitch Calculator
Pitch	Angle

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