# Slopes, Grades and Angles

# Roof Pitch to Degrees

Convert a roof pitch of rise in 12 to the angle of the roof in degrees.

The roof pitch is the slope of a roof expressed as a numerical ratio of a rise in inches in a horizontal run of 12 inches.

#### Calculator

- enter rise in inches per foot of horizontal run

#### Result

- the roof angle in degrees

##### Example

With a 12:12 pitch, the roof rises 12 inches in a 12-inch horizontal run.

A 12 in 12 pitch = 45°

One could be inclined to assume that a 6 in 12 slope would equal half of that, 22.5°. But that would be a wrong assumption!

You are not halving the angle by reducing the rise this way.

A 6 in 12 pitch = 26.5651 degrees.

### Slopes, Grades and Angles