Slope Percentage Calculator
Calculate the slope percentage between two points using rise and run. Perfect for construction, landscaping, and road design.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Slope Percentage Calculator
- Enter the Rise – Type the vertical change (height difference) in any unit (e.g., meters, feet).
- Enter the Run – Type the horizontal distance in the same unit as the rise.
- Click "Calculate Slope" – The result shows the slope percentage and the ratio (e.g., 1:10).
Important: The run cannot be zero. Use consistent units (metric or imperial) for both values.
Formula: Slope % = (Rise ÷ Run) × 100
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Frequently Asked Questions
Slope percentage is a measure of steepness, calculated as (rise / run) × 100. It represents the vertical change per 100 units of horizontal distance.
Yes, negative rise indicates a downward slope. The calculator will show a negative percentage for descending slopes.
A 100% slope means the rise equals the run, corresponding to a 45-degree angle.