Pitch Of Roof Calculator

The roof pitch calculator is a convenient online tool you can use to quickly assess the pitch of your roof to determine the length of rafters you need.

Pitch of roof calculator.

After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. The pitch is commonly defined as the ratio of rise over run in the form of x 12. The rise is the height of the roof and the run is the horizontal span as pictured above. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot.

We will explain to you how to determine the roof pitch step by step. Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run. The roof pitch is the slope of the rafter. Pitch is thus the ratio of the rise in inches to a 12 inch run and is often expressed using a semicolon for example 6 12.

The roof pitch calculator calculates slope pitch angle and rafter lengths based on input of rise m and run r. It is often compared to slope but is not exactly the same. In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. A a roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch.

Use the diagrams on this page as a reference when inputting rise and run and while interpreting the calculated results.