Roof Pitch Conversion Chart

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.

Roof pitch conversion chart.

We included a roof pitch chart below the 7 12 example image and the calculator below that. Usually they come in the form of a roof pitch diagram chart but other times it will be. The pitch of this roof is 4 8 12. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.

You can also calculate roof pitch even without using a roof slope calculator. Since pitch is the rise over a 12 inch run divide the run by 12 to get the multiplier in this case 120 12 10. 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. If this isn t practical then perform the same measurement on the underside of the roof.

Use the following formula which also describes a right triangle. Rafter rise run this formula is from the pythagorean theorem. The calculator above can handle much of this math. 48 10 4 8.

What is a roof pitch chart. In essence a roof pitch chart is provided as a rough guide usually by a roofing company to help you see what the average roof pitches tend to be. Now divide the rise by the multiplier to get the pitch eg.