Rise Over Run Calculator
Calculate the slope (grade) of a line or surface by entering the vertical rise and horizontal run. Perfect for construction, landscaping, and math problems.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Rise Over Run Calculator
- Enter the Rise – Type the vertical distance (e.g., 10) in the Rise field. Use any unit (feet, meters, etc.).
- Enter the Run – Type the horizontal distance (e.g., 50) in the Run field. Use the same unit as the rise.
- Calculate – Click the Calculate Slope button or press Enter on your keyboard.
- Read the Results – The calculator shows:
- Slope as fraction – Simplified ratio (e.g., 1/5).
- Slope as decimal – Rounded to 4 decimal places (e.g., 0.2000).
- Slope as percent – Percentage grade (e.g., 20.00%).
- Angle in degrees – Inclination angle (e.g., 11.31°).
Important: The run cannot be zero. Both inputs must be numbers. Units are arbitrary but must match (e.g., both in meters or both in feet).
Previous Results
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Frequently Asked Questions
Rise over run is the ratio of vertical change to horizontal change, commonly used to describe the slope of a line or surface.
Slope percentage = (rise / run) × 100. For example, a rise of 10 and run of 50 gives a 20% slope.
A slope of 0 means the line is horizontal (no rise). If run is zero, the slope is undefined (vertical line).
