Gradeability calculator

Calculate the slope or steepness of a road or path as a percentage grade

Input Parameters

Calculation Results

Calculation Formula

Gradeability (%) = (Vertical Rise ÷ Horizontal Run) × 100

Where:
- Vertical Rise: The vertical height difference in meters
- Horizontal Run: The horizontal distance in meters

Gradeability calculator Calculator Usage Guide

Learn how to use the Gradeability calculator to analyze road or path steepness

What is Gradeability?

Gradeability (or road gradient) is a measure of the steepness of a road, expressed as a percentage. It indicates how much vertical distance is gained or lost over a given horizontal distance.

How to use this calculator

  1. Enter the vertical rise (height difference) in meters
  2. Enter the horizontal run (distance traveled horizontally) in meters
  3. Click the "Calculate" button
  4. The calculator will display the gradeability percentage and a description of the slope

Applications

Gradeability calculations are essential in:

  • Transportation engineering
  • Urban planning
  • Recreational trail design
  • Agricultural field layout
  • Construction projects

Example

If a road rises 10 meters over a horizontal distance of 100 meters:

Gradeability = (10 ÷ 100) × 100 = 10%

This would be considered a gentle slope, comfortable for most vehicles and pedestrians.