Category 09 · Tool 47
Slope Calculator
Calculate slope ratio, percentage and angle from rise and run.
Calculator inputs
Result
Result
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Important: Choose the unit shown above; do not mix feet, meters, inches or other units within a dimensional set. Slope ratio = rise:run; percentage = rise/run×100; angle = atan(rise/run). This calculator is for general planning/reference only. It does not replace project-specific engineering design, applicable local codes, manufacturer data, site investigation, or qualified professional review.
How to use this calculator
What to enter
Enter or select the following as requested: Dimension unit; Rise; Run. Follow the units, valid ranges, examples, and options displayed beside each field.
What the result means
The construction result estimates a material quantity, dimension, load, or structural response from the measurements and assumptions entered. Check dimensions, unit conversions, material density, waste allowance, soil/site conditions, load combinations, and local code requirements.
When to use it
Use this for preliminary quantity takeoffs or to check a construction calculation. Verify structural and safety-critical work with qualified professionals and applicable building codes before ordering materials or building.