Slope Conversions
You can use the charts below to convert Degree of slope or Percent (Grade) to Rise:Run.
|
Degree |
Percent (Grade) |
Ratio (Rise:Run) |
|
0 |
n/a |
0:1 |
|
1 |
1.75 |
1:57.29 |
|
2 |
3.49 |
1:28.636 |
|
3 |
5.24 |
1:19.081 |
|
4 |
6.99 |
1:14.301 |
|
4.7636 |
8.33 |
1:12 |
|
5 |
8.75 |
1:11.43 |
|
6 |
10.51 |
1:9.5144 |
|
7 |
12.28 |
1:8.1443 |
|
7.125 |
12.50 |
1:8 |
|
8 |
14.05 |
1:7.1154 |
|
9 |
15.84 |
1: 6.3138 |
|
9.4623 |
16.67 |
1:6 |
|
10 |
17.63 |
1: 5.6713 |
|
11 |
19.44 |
1: 5.1446 |
|
11.31 |
20.00 |
1:5 |
|
12 |
21.26 |
1: 4.7046 |
|
13 |
23.09 |
01:04.3 |
|
14 |
24.93 |
1: 4.0108 |
|
14.036 |
25.00 |
1:4 |
|
15 |
26.80 |
1: 3.7321 |
|
16 |
28.68 |
1: 3.4874 |
|
16.699 |
30.00 |
01:03.3 |
|
17 |
30.57 |
1: 3.2709 |
|
18 |
32.49 |
1: 3.0777 |
|
18.435 |
33.33 |
1:3 |
|
19 |
34.43 |
1: 2.9042 |
|
20 |
36.40 |
1: 2.7475 |
|
21 |
38.39 |
01:02.6 |
|
21.801 |
40.00 |
1:2.5 |
|
22 |
40.40 |
1: 2.4751 |
|
23 |
42.45 |
1: 2.3559 |
|
24 |
44.52 |
1: 2.246 |
|
24.228 |
45.00 |
1: 2.2222 |
|
25 |
46.63 |
1: 2.1445 |
|
26 |
48.77 |
1: 2.0503 |
|
26.565 |
50.00 |
1:2 |
|
27 |
50.95 |
1: 1.9626 |
|
28 |
53.17 |
1: 1.8807 |
|
29 |
55.43 |
1: 1.804 |
|
30 |
57.74 |
1: 1.7321 |
|
31 |
60.09 |
1: 1.6643 |
|
32 |
62.49 |
1: 1.6003 |
|
33 |
64.94 |
1: 1.5399 |
|
34 |
67.45 |
1: 1.4826 |
|
35 |
70.02 |
1: 1.4281 |
|
36 |
72.65 |
1: 1.3764 |
|
36.87 |
75.00 |
1: 1.3333 |
|
37 |
75.36 |
1: 1.327 |
|
38 |
78.13 |
1: 1.2799 |
|
39 |
80.98 |
1: 1.2349 |
|
40 |
83.91 |
1: 1.1918 |
|
41 |
86.93 |
1: 1.1504 |
|
42 |
90.04 |
1: 1.1106 |
|
43 |
93.25 |
1: 1.0724 |
|
44 |
96.57 |
1: 1.0355 |
|
45 |
100.00 |
1:1 |
|
90 |
n/a |
1:0 |
This table shows you the Degrees for each Pitch.
| Pitch | Degrees |
| 12 | 45 |
| 11 | 42.5 |
| 10 | 40 |
| 9 | 37 |
| 8 | 33.75 |
| 7 | 30.5 |
| 6 | 26.5 |
| 5 | 22.5 |
| 4 | 18.5 |
| 3 | 14 |
| 2 | 9.5 |
| 1 | 4 |
There are several Web sites you can visit to learn more about slope.
http://www.1728.com/gradient.htm
http://www.secrets-of-shed-building.com/building-a-shed-roof.html
 |
NOTE: These are NOT On Center Software sites - these links are only provided as a convenience. All information contained on these sites should be independently verified for accuracy. On Center Software does not warrant the information or content. |
