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Roof Pitch to Degrees Calculator

Enter the rise per 12 inches of run to get the roof angle in degrees.

Roof pitch is written as rise-over-run, like 6/12 (6 inches of rise for every 12 of run). To get the angle in degrees, take the arctangent of rise ÷ run — a 6/12 pitch is about 26.6°.

For the roof
Measure it safely.
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Frequently asked questions

What is a 6/12 roof pitch in degrees?

About 26.57 degrees.

What counts as a steep roof?

Anything above 9/12 (roughly 37°) is considered steep and usually needs extra safety measures.