Since we have our pitch ratio we re ready to convert it into degrees.
How to convert roof pitch into degrees.
Line up the level so that the 12 on one end lines up with the peak.
8 12 pitch 33 75 degrees.
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.
To do this simply convert the rise and run as a fraction to a decimal form eg.
Select inches to enter decimal inches or millimeters for metric.
Note the other number it will be vertical where the line of the roof intersects.
Look at the column labeled pitch then look under degrees to get the corresponding amount of degrees.
Roof pitch and corresponding angles.
This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees.
Rise run rise run slope.
When determining the angle of a hip use 16 97 instead of 12 in the formula above.
If that line is for example 9 then your ration will be 9 12.
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.
The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72.
Here is a handy conversion chart to convert roof pitches to degrees in case you don t have time for all that math.
First convert the pitch to a slope.
In other parts of the world where metric is used degrees are actually commonly used for roof pitch because the base 10 nature of the standard units converts cleanly with a simple tool.
How to convert roof pitch to degrees to find the angle of a roof in degrees convert the pitch to a slope then convert to degrees by finding the arc tangent of the slope.
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.
The chart shows plumb cuts so to get the level cut remember that 90 plumb cut level cut.
Directly measure roof pitch angle and calculate pitch and angle on phone or tablet.
If a roof or ramp rises 4 in a length of 12 the pitch is 4 in 12 which is 18 43 or 33 33 grade enter base length to calculate rise and diagonal for current pitch angle.
Roof pitch to degrees equivalents this drawing demonstrates how many degrees rise for each pitch of a typical roof.
