Enter the height of each stair (in) and the length of each stair (in) into the Stair Slope Calculator. The calculator will evaluate and display the Stair Slope. 

Stair Slope Formula

The following formula is used to calculate the Stair Slope. 

SS = HS / LS

  • Where SS is the Stair Slope ( )
  • HS is the height of each stair (in) 
  • LS is the length of each stair (in) 

How to Calculate Stair Slope?

The following example problems outline how to calculate Stair Slope.

Example Problem #1:

  1. First, determine the height of each stair (in). 
    • The height of each stair (in) is given as: 12.
  2. Next, determine the length of each stair (in). 
    • The length of each stair (in) is provided as: 13.
  3. Finally, calculate the Stair Slope using the equation above: 

SS = HS / LS

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

SS = HS / LS = .923


Example Problem #2: 

For this problem, the variables needed are provided below:

height of each stair (in) = 15

length of each stair (in) = 20

This example problem is a test of your knowledge on the subject. Use the calculator above to check your answer. 

SS = HS / LS = ?