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Elevation Grade Calculator — result sheet
Calculate slope grade percentage and angle from vertical rise and horizontal run.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Grade = rise/run × 100; angle = arctan(rise/run).
Grade percentage uses rise divided by horizontal run, while the angle expresses the same slope in degrees.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Vertical rise — length units; minimum -1000000; maximum 1000000
- Horizontal run — length units; minimum 1.0E-6; maximum 1000000
Worked example
| Input | Value |
|---|---|
| Vertical rise | 3 |
| Horizontal run | 4 |
Grade = 75%; angle ≈ 36.870°.
Assumptions and limits
- Rise and run use the same length unit.
- Horizontal run is positive.
- Road, drainage, accessibility, structural, and code requirements are not assessed.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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