How to calculate the rise for rafters

Calculate the rise for rafters with any run and any pitch using feet and inches, inches or just a decimal value with ease and precision for free.

It is often necessary to establish the the rise for a particular run and roof pitch. This is so important for ridge posts and knee walls. Build your skills with this technique so this task will become second nature.

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Rise of rafter

Open app

Rise calculator
Click on menu in the top left.

Select Lean to rafter

Rise calculator menu
Click on Lean to rafter the third one down.

Run

Run
Enter the horizontal distance, then click equals.

Pitch

Pitch
Enter the roof pitch in inches per foot, then click equals.

Rafter

Click equals one more time.

Rise

Rise
This is the vertical distance.