Pitch Calculator
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Results
Pitch Ratio
6:12
rise per 12" of run
Pitch Angle
26.6°
degrees from horizontal
Slope %
50%
rise ÷ run × 100
Pitch Multiplier
1.118
for material area calc
Rafter Lengths
Line Length
13' 5"
ridge to wall plate
Total w/ Overhang
14' 7"
including eave tail
Pitch Angle Comparison
Common Pitch Reference Chart
| Pitch | Angle | Slope % | Multiplier | Type | Typical Use |
|---|---|---|---|---|---|
| 2:12 | 9.5° | 16.7% | 1.014 | Low | Flat / modern commercial |
| 3:12 | 14.0° | 25% | 1.031 | Low | Modern homes, sheds |
| 4:12 | 18.4° | 33.3% | 1.054 | Standard | Most residential homes |
| 5:12 | 22.6° | 41.7% | 1.083 | Standard | Residential, good drainage |
| 6:12 | 26.6° | 50% | 1.118 | Standard | Most common, balanced |
| 7:12 | 30.3° | 58.3% | 1.158 | Standard | Traditional residential |
| 8:12 | 33.7° | 66.7% | 1.202 | Steep | Colonial, high snow areas |
| 9:12 | 36.9° | 75% | 1.250 | Steep | Cape Cod, attic use |
| 10:12 | 39.8° | 83.3% | 1.302 | Very Steep | Gothic, Victorian |
| 12:12 | 45.0° | 100% | 1.414 | Very Steep | A-frame, dramatic designs |