Slope & Grade Calculator
Calculate slope percentage, angle, and ratio from elevation data. Used in surveying, grading, and terrain analysis.
Input Method
Slope Classification Reference:
- 0–8% — Gentle. Suitable for most construction and equipment.
- 8–15% — Moderate. May need grading for roads or building pads.
- 15–30% — Steep. Significant earthwork required. Erosion risk.
- 30%+ — Extreme. Specialized equipment. High erosion and stability concerns.