Elevation Grade Calculator
Calculate the grade percentage of elevation change over distance
About this calculator
The Elevation Grade Calculator determines the grade percentage of a slope by measuring the vertical elevation change over a horizontal distance. This tool is essential for construction professionals, civil engineers, hikers, cyclists, and anyone needing to assess terrain steepness. Grade percentage is crucial for determining road safety, drainage requirements, accessibility compliance, and understanding the difficulty level of trails or routes.
How to use
Enter the vertical elevation change (rise) and horizontal distance (run) in your preferred units. The calculator will instantly compute the grade percentage using the formula: (rise ÷ run) × 100. Ensure both measurements use the same units for accurate results.
Frequently asked questions
What's the difference between grade and slope?
Grade is expressed as a percentage, while slope can be expressed as a ratio, decimal, or angle. Both measure the same steepness concept.
What grade percentage is considered steep?
Generally, grades above 8-10% are considered steep for roads, while hiking trails over 15% grade are quite challenging.
Can I use different units for rise and run?
No, both measurements must use the same units (feet, meters, etc.) for the calculation to be accurate.