With this calculator, you calculate the slope of the building's roof based on two starting values. The calculator gives the result both in degrees and as a ratio (e.g. 1:2.5). At the end of the page, you can also find the most common slope values in the table.
| Pitch Ratio | Roof Pitch deg | Roof Pitch % |
|---|---|---|
| 1:1 | 45° | 100 % |
| 1:1,5 | 33,7° | 66,7 % |
| 1:2 | 26,6° | 50 % |
| 1:2,5 | 21,8° | 40 % |
| 1:3 | 18,4° | 33,3 % |
| 1:3,5 | 15,9° | 28,6 % |
| 1:4 | 14° | 25 % |
| 1:4,5 | 12,5° | 22,2 % |
| 1:5 | 11,3° | 20 % |
| 1:6 | 9,5° | 16,7 % |
| 1:7 | 8,1° | 14,3 % |
| 1:8 | 7,1° | 12,5 % |
| 1:9 | 6,3° | 11,1 % |
| 1:10 | 5,7° | 10 % |
| 1:20 | 2,9° | 5 % |
| 1:40 | 1,4° | 2,5 % |
| 1:50 | 1,2° | 2 % |
| 1:80 | 0,7° | 1,3 % |
| 1:100 | 0,6° | 1 % |