Enter the elevation change and the horizontal distance into the calculator to determine the fall percentage. This calculator helps in assessing the steepness or slope of a terrain.

## Fall Percentage Formula

The following formula is used to calculate the fall percentage:

FP = (EC / HD) * 100

Variables:

- FP is the fall percentage (%)
- EC is the elevation change (feet)
- HD is the horizontal distance (feet)

To calculate the fall percentage, divide the elevation change by the horizontal distance and then multiply by 100 to convert it to a percentage.

## What is Fall Percentage?

Fall percentage is a way of expressing the steepness or slope of a terrain. It is calculated by dividing the change in elevation by the horizontal distance over which the change occurs, and then converting this ratio into a percentage. This measurement is commonly used in civil engineering, construction, and road design to ensure safety and adherence to regulations.

## How to Calculate Fall Percentage?

The following steps outline how to calculate the Fall Percentage.

- First, determine the elevation change (EC) in feet.
- Next, determine the horizontal distance (HD) in feet over which the elevation change occurs.
- Use the formula from above = FP = (EC / HD) * 100.
- Finally, calculate the Fall Percentage (FP).
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem:**

Use the following variables as an example problem to test your knowledge.

elevation change (EC) = 15 feet

horizontal distance (HD) = 200 feet