Roof Pitch Calculator

• Measure roof pitch with your phone's tilt sensor, then get rise-per-12, rafter length, roof area and a shingle takeoff.
• Roof Pitch: Lay the phone flat on a rafter, the roof deck or a straight board on the slope, then tap Take Angle. On desktop, drag the dial.
• Building Length: Footprint length along the ridge.
• Building Width: Footprint width across the ridge, eave to eave.
• Roof Style: Gable and hip slope from both eaves to the ridge. A shed roof slopes one way across the full width.
• Eave Overhang: How far the roof projects past the wall on each side.
• Shingle Type
• Optional Features
• Tear Off Existing Roof
• Include Underlayment
• Include Ridge Vent
• Estimate Summary