Roof pitch to degrees chart
Every common roof pitch, 1-in-12 through 24-in-12, as an angle, a percent grade, a slope ratio and the rafter length it adds per foot of run.
The chart
| Pitch | Angle | Grade | Slope | Rafter / ft run |
|---|---|---|---|---|
| 1/12 | 4.76° | 8.333333% | 0.083333 | 1' 0-1/16" |
| 2/12 | 9.46° | 16.66667% | 0.166667 | 1' 0-3/16" |
| 3/12 | 14.04° | 25% | 0.25 | 1' 0-3/8" |
| 4/12 | 18.43° | 33.33333% | 0.333333 | 1' 0-5/8" |
| 5/12 | 22.62° | 41.66667% | 0.416667 | 1' 1" |
| 6/12 | 26.57° | 50% | 0.5 | 1' 1-7/16" |
| 7/12 | 30.26° | 58.33333% | 0.583333 | 1' 1-7/8" |
| 8/12 | 33.69° | 66.66667% | 0.666667 | 1' 2-7/16" |
| 9/12 | 36.87° | 75% | 0.75 | 1' 3" |
| 10/12 | 39.81° | 83.33333% | 0.833333 | 1' 3-5/8" |
| 11/12 | 42.51° | 91.66667% | 0.916667 | 1' 4-1/4" |
| 12/12 | 45.00° | 100% | 1 | 1' 5" |
| 13/12 | 47.29° | 108.3333% | 1.083333 | 1' 5-11/16" |
| 14/12 | 49.40° | 116.6667% | 1.166667 | 1' 6-7/16" |
| 15/12 | 51.34° | 125% | 1.25 | 1' 7-3/16" |
| 16/12 | 53.13° | 133.3333% | 1.333333 | 1' 8" |
| 17/12 | 54.78° | 141.6667% | 1.416667 | 1' 8-13/16" |
| 18/12 | 56.31° | 150% | 1.5 | 1' 9-5/8" |
| 19/12 | 57.72° | 158.3333% | 1.583333 | 1' 10-1/2" |
| 20/12 | 59.04° | 166.6667% | 1.666667 | 1' 11-5/16" |
| 21/12 | 60.26° | 175% | 1.75 | 2' 0-3/16" |
| 22/12 | 61.39° | 183.3333% | 1.833333 | 2' 1-1/16" |
| 23/12 | 62.45° | 191.6667% | 1.916667 | 2' 1-15/16" |
| 24/12 | 63.43° | 200% | 2 | 2' 2-13/16" |
By pitch
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 · 49.40°15/12 pitch · 51.34°16/12 pitch · 53.13°17/12 pitch · 54.78°18/12 pitch · 56.31°19/12 pitch · 57.72°20/12 pitch · 59.04°21/12 pitch · 60.26°22/12 pitch · 61.39°23/12 pitch · 62.45°24/12 pitch · 63.43°
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