Calculate slope, angle, and grade percentage between two points.
Slope Measurements
Calculated Grade
Calculating a slope?
Enter the vertical rise and horizontal run to calculate the steepness of the terrain or project.
About this calculator
Overview
Elevation grade is a measure of the steepness of a slope, expressed as a percentage, an angle, or a ratio. It is crucial in civil engineering, landscaping, and construction to ensure proper drainage, road safety, and ADA accessibility.
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Pro Tips
Ensure both Rise and Run are measured in the same units (e.g., both in feet or both in meters).
For drainage, a minimum grade of 2% (1/4 inch per foot) is often recommended.
Use a laser level or string level to get accurate measurements over long distances.
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Fun Facts
"A 100% grade is a 45-degree angle (Rise equals Run)."
"The ADA requirement for pedestrian ramps is a maximum grade of 8.33% (1:12 ratio)."
"Most residential driveways should not exceed a 12% to 15% grade for vehicle safety."
