Roof pitch (slope) | Roof Angle(degree) |
1:12 pitch | 4.76° |
2:12 pitch | 9.46° |
3:12 pitch | 14.04° |
4:12 pitch | 18.43° |
5:12 pitch | 22.62° |
6:12 pitch | 26.57° |
7:12 pitch | 30.26° |
8:12 pitch | 33.69° |
9:12 pitch | 36.87° |
10:12 pitch | 39.81° |
11:12 pitch | 42.51° |
12:12 pitch | 45.00° |
13:12 pitch | 47.29° |
14:12 pitch | 49.4° |
15:12 pitch | 51.34° |
16:12 pitch | 53.13° |
Valley &Hip factor | 1.4167 | 1.424 | 1.4362 | 1.453 | 1.4743 | 1.5 |
pitch of roof | 1:12 | 2:12 | 3:12 | 4:12 | 5:12 | 6:12 |
Slope factor | 1.118 | 1.118 | 1.118 | 1.118 | 1.118 | 1.118 |
SlopeFactor | 1.1577 | 1.2019 | 1.25 | 1.3017 | 1.3566 | 1.4142 |
valley &Hip factor | 1.5298 | 1.5635 | 1.6008 | 1.6415 | 1.6853 | 1.732 |
12/13 | 450° |
12.5/12 | 46.17° |
13/12 | 47.29° |
13.5/12 | 48.37° |
14/12 | 49.4° |
14.5/12 | 50.39° |
15/12 | 51.25° |
15.5/12 | 52.25° |
16/12 | 53.13° |
16.5/12 | 53.97° |
17/12 | 54.78° |
17.5/12 | 55.56° |
18/12 | 56.31° |
18.5/12 | 57.03° |
19/12 | 57.72° |
19.5/12 | 58.39° |
20/12 | 59.04° |
20.5/12 | 59.66° |
21/12 | 60.26° |
21.5/12 | 60.83° |
22/12 | 61.39° |
22.5/12 | 61.93° |
23/12 | 62.45° |
23.5/12 | 62.95° |
24/12 | 63.43° |
24.5/12 | 63.9° |
25/12 | 64.63° |
25.5/12 | 64.8° |
26/12 | 65.22° |
26.5/12 | 65.64° |
27/12 | 66.04° |
27.5/12 | 66.43° |
28/12 | 66.80° |
28.5/12 | 67.17o |
29/12 | 67.52° |
29.5/12 | 67.86° |
30/12 | 68.2° |
30.5/12 | 68.52° |
31/12 | 68.84° |
31.5/12 | 69.15° |
32/12 | 69.44° |
32.5/12 | 69.73° |
33/12 | 70.02° |
33.5/12 | 70.29° |
34/12 | 70.56° |
34.5/12 | 70.82° |
35/12 | 71.08° |
35.5/12 | 71.32° |
36/12 | 71.57° |
36.5/12 | 71.80° |
Convert roof slop From degrees To standard roof pitch | |
Roof angle In degrees | Roof slope as Rise in run (x in 12) |
1° | 0.209 in 12 |
2° | 0.419 in 12 |
3° | 0.629 in 12 |
4° | 0.839 in 12 |
5° | 1.050 in 12 |
6° | 1.261 in 12 |
7° | 1.473 in 12 |
8° | 1.687 in 12 |
9° | 1.901 in 12 |
10° | 2.116 in 12 |
11° | 2.333 in 12 |
12° | 2.551 in 12 |
13° | 2.770 in 12 |
14° | 2.991 in 12 |
15° | 3.215 in 12 |
16° | 3.441 in 12 |
17° | 3.669 in 12 |
18° | 3.899 in 12 |
19° | 4.132 in 12 |
20° | 4.368 in 12 |
21° | 4.606 in 12 |
22° | 4.848 in 12 |
23° | 5.094 in 12 |
23° | 5.343 in 12 |
24° | 5.596 in 12 |
25° | 5.853 in 12 |
26° | 6.114 in 12 |
27° | 6.381 in 12 |
28° | 6.652 in 12 |
29° | 6.928 in 12 |
30° | 7.210 in 12 |
31° | 7.498 in 12 |
33° | 7.793 in 12 |
34° | 8.094 in 12 |
35° | 8.403 in 12 |
36° | 8.719 in 12 |
37° | 9.043 in 12 |
38° | 9.375 in 12 |
39° | 9.717 in 12 |
40° | 10.069 in 12 |
41° | 10.431 in 12 |
42° | 10.805 in 12 |
43° | 11.190 in 12 |
44° | 11.588 in 12 |
45° | 12.000 in 12 |
46° | 12.426 in 12 |
47° | 12.868 in 12 |
48° | 13.327 in 12 |
49° | 13.804 in 12 |
50° | 14.301 in 12 |
51° | 14.819 in 12 |
52° | 15.359 in 12 |
53° | 15.925 in 12 |
54° | 16.517 in 12 |
55° | 17.138 in 12 |
56° | 17.791 in 12 |
57° | 18.478 in 12 |
58° | 19.204 in 12 |
59° | 19.971 in 12 |
60° | 20.785 in 12 |
61° | 21.649 in 12 |
62° | 22.569 in 12 |
63° | 23.551 in 12 |
64° | 24.604 in 12 |
65° | 25.734 in 12 |
66° | 26.952 in 12 |
67° | 28.270 in 12 |
68° | 29.701 in 12 |
69° | 31.261 in 12 |
70° | 32.970 in 12 |
71° | 34.851 in 12 |
72° | 36.932 in 12 |
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