On blue prints architects engineers usually display the pitch of a roof in the format shown on the image where number 4 represents a rise and number 12 represents a length.
12 12 roof pitch in degrees.
This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees.
There are many websites which are offering this facility.
The following are important details to better understand this conversion.
Another option that is available for you in finding the pitch factor for your roof is to find roof pitch calculator online.
Also roof pitch angle is sometimes referred to as 12 12 6 12 8 12 and so forth.
Image 1 12 to 12 12 roof pitch 7 12 pitch.
The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72.
But how are going to determine the angle s degree.
The table below shows common roof pitches and the equivalent grade degrees and radians for each.
Roof pitch degree table.