Slope Percentage Calculator

Last updated: 15 Apr 2025 | Author: Brij | Review By: Irshad

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This Slope Percentage Calculator helps you quickly calculate the slope (gradient) of a surface or terrain based on rise and run values.

Rise:

Run:

Slope Calculation Result

Slope Percentage:

Slope Angle:

Slope Type:

What Is Slope Percentage?

Slope percentage is a way of expressing the steepness or incline of a surface. It shows how much a surface rises or falls over a certain horizontal distance. The slope is usually calculated as a percentage, which makes it easier to understand and compare.

Formula to Calculate Slope Percentage

Formula:

$\text{Slope (\%)} = \left( \frac{\text{Rise}}{\text{Run}} \right) \times 100$

Where:

Rise = Vertical change (in meters, feet, inches, etc.)
Run = Horizontal distance (same unit as rise)
The result is the slope expressed as a percentage.

Example Calculation

Suppose:

Rise = 4 feet
Run = 20 feet

Using the formula:

$\text{Slope (\%)} = \left( \frac{4}{20} \right) \times 100 = 20\%$

So, the slope is 20%.

Why Is Slope Percentage Important?

Understanding slope is crucial in:

Construction & Civil Engineering: for designing roads, ramps, and drainage systems.
Landscaping: to manage water runoff and garden layouts.
Roof Design: to ensure proper drainage and structural safety.
Wheelchair Accessibility: to follow ADA-compliant slope standards.

✍️ Final Notes

Always use the same unit for both rise and run.
This calculator helps avoid manual errors and speeds up your workflow.
For steep slopes, a small run with a high rise results in a high percentage.

Check out 1 similar Slope Percentage Calculator :

Slope Percentage Calculator

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