Enter the roof angle (degrees) into the Roof Slope Calculator. The calculator will evaluate and display the Roof Slope.

## Roof Slope Formula

The following formula is used to calculate the Roof Slope.

**RS = tan (ra)**

- Where RS is the Roof Slope (Y:1)
- ra is the roof angle (degrees)

## How to Calculate Roof Slope?

The following example problems outline how to calculate Roof Slope.

Example Problem #1:

- First, determine the roof angle (degrees).
- The roof angle (degrees) is given as: 45.

- Finally, calculate the Roof Slope using the equation above:

RS = tan (ra)

The values given above are inserted into the equation below and the solution is calculated:

RS = tan (45deg) = 1 (Y:1)

Example Problem #2:** **

For this problem, the variables needed are provided below:

roof angle (degrees) = 60

This example problem is a test of your knowledge on the subject. Use the calculator above to check your answer. RS = tan (ra)** = ?**