The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72.
Roof slope 30 degrees.
Lower slopes don t handle wind driven rain as well.
Also see our page quick reference.
Enter any angle or fraction of angle to find pitch.
Other than the 45 roof slope which is 12 in 12 none of the standard roof pitches 5 in 12 6 in 12 etc are equal to a whole degree.
The table below shows common roof pitches and the equivalent grade degrees and radians for each.
Another option that is available for you in finding the pitch factor for your roof is to find roof pitch calculator online.
However if you to do the process using your own knowledge you can still convert pitch to degrees by dividing the rise and run and get its corresponding measurement.
Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio.
A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind.
A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof.
Although there s isn t any standard pitch of a roof used on all kinds of sloped roofs you can determine the range of pitches by using a roof angle calculator and by considering factors like the local climate and roofing materials.
Roof pitch to degrees equivalents.
The minimum roof pitch for shedding snow is around 30 or a 6 12 or 7 12 slope although this is not a definite as the material of your roof the direction of the snow and wind are some factors that can affect whether or not snow will slide as roofs of as little as 10 have been reported to shed snow.
The following table shows how the same common roof slopes can be expressed using rise in run ratios degrees and percentages.
The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily.
With the use of this converter it will be easier for you to locate a 30 degree roof pitch 20 degree roof pitch 25 degree roof pitch or a 15 degree roof pitch.
This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees.
See below after the table for directions on how to convert any roof slope from one form to another even roof slopes not shown in the table.
Enter any pitch or fraction of pitch to find angle.
7 12 30 26 1 1577 8 12 33 69 1 2019 9 12 36 37 1 2500 10 12 39 81 1 3017 11 12 42 51 1 3566 12 12 45 00 1 4142.
45 this is our pitch calculator which will convert pitch to angle or angle to pitch for half degree roof slope calculations.
Steeper slopes increase the sail effect that makes them susceptible to wind.
