Roof Pitch
Calculate roof pitch and angle
Input Parameters
Valid
Pitch Ratio
0.00
Angle
0.00 degrees
Formula
Pitch = Rise / Run; Angle = arctan(Rise/Run)
Fill in the values on the left and click Calculate to see your result.
Formula
Pitch = Rise / Run; Angle = arctan(Rise/Run)
Roof pitch expresses slope as rise over a fixed run, typically 12 units.
Assumptions
- Standard run of 12 units
- Straight roof slope
Step 1: Calculate pitch ratio
Pitch = 6/12 = 0.5 (6:12)
Step 2: Calculate angle
Angle = arctan(0.5) = 26.6°
Frequently Asked Questions
What is a common roof pitch?
4:12 to 9:12 are common residential pitches.