Enter rise and run and see pitch, angle and the slope multiplier for your roof.
How it works
Rise ÷ run × 12 gives pitch per foot. The arctangent gives the angle.
Before you order
- Measure from the attic on the underside of a rafter when you can.
- Very low pitches limit which roofing you can use.
- Do not walk a steep roof without fall protection.
Common questions
What is a common roof pitch?
Many homes fall between 4/12 and 9/12.
How do I measure pitch from the ground?
Hold a level and a tape on a gable rake from a ladder, or use a phone clinometer app.