**How To Figure Roof Pitch Calculator**. Interesting facts about roof pitches. Calculators will give you the right verdict back so that, whatever you decide, you are left with a roof pitch that you feel happy with.

As we previously mentioned, there are two basic methods of how to measure a roof’s pitch: Using the diagram below, measure your roof from the ground, and enter building dimensions into the calculator #2 above. Pitch = rise / run = 2.5 / 8 = 31 percent 5.

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### The pitch is commonly defined as the ratio of rise over run in the form of x/12.

An easier way to calculate your roof pitch without going on the roof is to measure the rafter length or truss system in your attic. We have given you 3 options of how to get the pitch (or the slope) on your slop. So you are wanting to get the pitch on a roof?

### Roof pitch is a determining factor for cost of the roof, as well as the roof area, and the type of materials used.

You came to the right place! How to figure roof pitch with this roof pitch calculator? This roof slope calculator is highly recommended as it provides the precise measurement of the slope.

### The rise is the height of the roof, and the run is the horizontal span (as pictured above).

We know sinθ = opposite/ hypotenuse. Measure across the face of your gable, from mark to mark, and write down the value in inches. On both sides of your roof, measure down 36 along the trim from the peak and make a mark.

### Calculate roof rafters length using angle.

The more primitive calculators can also require so many figures beforehand that you might as well figure your pitch out yourself. Enter the span (also known as gable side width), and the rise above the base line. Pitch = rise / run = 2.5 / 8 = 31 percent 5.

### However, these apps and tools are getting better all the time, providing an excellent alternative to homeowners that may find it difficult to access their roof space.

Enter any angle or fraction of angle to find pitch. Therefore, mark off 12 inches on the level and place it down horizontally against the roof rafter. X = pitch * 12 = 0.25 * 12 = 3.