Calculate the rafter run by the known rise

Use this free app to calculate the run for any rafter in feet and inches, or just inches. Based on any roof pitch and any known rise.

The run is the horizontal distance a rafter travels. Learn how to perform this necessary task with ease and precision.

Install now:

Android download

Calculate rafter run

Open app

Rafter rise calculator — Click on menu in the top left.

Select Rafter (known rise)

Menu — Click on Rafter (known rise) the fourth one down.

Rise

Rise — Enter the rise, then click equals.

Pitch

Pitch — Enter how many inches per foot the rafter rises.

Rafter

Click equals one more time to cycle past this one.

Run

Run — This is the horizontal distance the rafter travels.

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