Enter the rise and run into the calculator to determine the reverse slope. This calculator can also evaluate any of the variables given the others are known.

## Reverse Slope Formula

The following formula is used to calculate the reverse slope.

S = (R / Ru) * 100

Variables:

- S is the slope (%)
- R is the rise (units)
- Ru is the run (units)

To calculate the reverse slope, divide the rise by the run and then multiply by 100 to get the percentage.

## What is a Reverse Slope?

A reverse slope refers to a slope that descends in the opposite direction of a given reference point or line. In construction and civil engineering, it is often used to describe slopes that go against the natural incline of a terrain or the intended slope of a structure. Calculating the reverse slope is crucial for designing drainage systems, roads, and other structures that require precise slope measurements for proper function and safety.

## How to Calculate Reverse Slope?

The following steps outline how to calculate the Reverse Slope.

- First, determine the rise (R) in units.
- Next, determine the run (Ru) in units.
- Next, gather the formula from above = S = (R / Ru) * 100.
- Finally, calculate the Reverse Slope (S) in percentage.
- 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.

Rise (R) = 5 units

Run (Ru) = 20 units