Convert between pitch ratio (X/12), degrees, and percentage. Find your roof's pitch from rise and run measurements with a visual diagram.
Measure the vertical rise and horizontal run of your roof
Or convert from degrees:
| Pitch | Degrees | Slope % | Multiplier | Type |
|---|---|---|---|---|
| 1/12 | 4.76ยฐ | 8.3% | 1.003 | Low slope |
| 2/12 | 9.46ยฐ | 16.7% | 1.014 | Low slope |
| 3/12 | 14.04ยฐ | 25.0% | 1.031 | Conventional |
| 4/12 | 18.43ยฐ | 33.3% | 1.054 | Conventional |
| 5/12 | 22.62ยฐ | 41.7% | 1.083 | Conventional |
| 6/12 | 26.57ยฐ | 50.0% | 1.118 | Conventional |
| 8/12 | 33.69ยฐ | 66.7% | 1.202 | Steep |
| 10/12 | 39.81ยฐ | 83.3% | 1.302 | Steep |
| 12/12 | 45.00ยฐ | 100% | 1.414 | Very steep |
Roof pitch is expressed as a ratio of rise (vertical height) to run (horizontal distance). The standard measurement uses 12 inches of run as the base โ so a "6/12 pitch" means the roof rises 6 inches for every 12 inches of horizontal distance.