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.

What is a roof pitch chart. The pitch of this roof is 4 8 12. Use the following formula which also describes a right triangle. 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.

Usually they come in the form of a roof pitch diagram chart but other times it will be. If this isn t practical then perform the same measurement on the underside of the roof. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. The combination of two numbers are used to display or show the roof pitch.

We included a roof pitch chart below the 7 12 example image and the calculator below that. 48 10 4 8. You can also calculate roof pitch even without using a roof slope calculator. These charts come in many various names and forms and we will look at how you can use a roof pitch conversion chart to learn about the most effective balance for your home with regard to getting the roof design right.

Rafter rise run this formula is from the pythagorean theorem. 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.