Rise Run Calculator
Calculate the slope gradient, angle, and length from rise and run measurements. Useful for construction, landscaping, and accessibility ramp design.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Rise Run Calculator
- Enter the Rise – Type the vertical height change (e.g., 4) in the first input field.
- Enter the Run – Type the horizontal distance (e.g., 12) in the second input field.
- Select Unit System – Choose Imperial (ft) for feet or Metric (m) for meters.
- Click Calculate – Press the blue Calculate button to get results.
- Slope (Rise:Run) – Simplified ratio (e.g., 1:3).
- Slope Percentage – Rise divided by run times 100 (e.g., 33.33%).
- Angle – In degrees (e.g., 18.43°).
- Ramp Length – Diagonal distance (e.g., 12.65 ft).
- Grade – Same as slope percentage.
What You Get
Note: Rise must be 0 or positive; run must be greater than 0. Use consistent units (both in feet or both in meters).
Previous Results
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Frequently Asked Questions
Rise is the vertical height change, and run is the horizontal distance. They define the slope of a surface.
Slope is calculated as rise divided by run. It can be expressed as a ratio (e.g., 1:12), a percentage, or an angle.
It supports both imperial (feet) and metric (meters). Choose your preferred unit system before calculating.