Enter the grade rise and the grade run into the Grade Slope Calculator. The calculator will evaluate and display the Grade Slope. 

Grade Slope Formula

The following formula is used to calculate the Grade Slope. 

GS = GY / GX * 100
  • Where GS is the Grade Slope (%)
  • GY is the grade rise 
  • GX is the grade run 

To calculate a grade slope, divide the grade rise by the grade run, then multiply by 100.

How to Calculate Grade Slope?

The following example problems outline how to calculate Grade Slope.

Example Problem #1:

  1. First, determine the grade rise. 
    • The grade rise is given as: 50.
  2. Next, determine the grade run. 
    • The grade run is provided as: 1000.
  3. Finally, calculate the Grade Slope using the equation above: 

GS = GY / GX * 100

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

GS = 50 / 1000 * 100 = 5 (%)

Example Problem #2: 

For this problem, the variables needed are provided below:

grade rise = 60

grade run = 700

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

GS = GY / GX * 100 = ?