How To Convert Roof Pitch Into Degrees

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 into degrees.

The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. Since we have our pitch ratio we re ready to convert it into 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. Roof pitch to degrees equivalents this drawing demonstrates how many degrees rise for each pitch of a typical roof.

Note the other number it will be vertical where the line of the roof intersects. 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. 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. Directly measure roof pitch angle and calculate pitch and angle on phone or tablet.

This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. Look at the column labeled pitch then look under degrees to get the corresponding amount of degrees. If that line is for example 9 then your ration will be 9 12. The chart shows plumb cuts so to get the level cut remember that 90 plumb cut level cut.

Hip rafters are different. 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. Rise run rise run slope. Roof pitch and corresponding angles.

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. Line up the level so that the 12 on one end lines up with the peak. When determining the angle of a hip use 16 97 instead of 12 in the formula above. 8 12 pitch 33 75 degrees.

What you need to do is find the peak of your section of roof from the side on a ladder. First convert the pitch to a slope. Select inches to enter decimal inches or millimeters for metric.