Convert an angle in degrees to percentage slope (grade) with the Degrees to Percentage Slope Calculator. Results update instantly as you type.
Degrees to percentage slope calculator
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Using the calculator
Enter the angle in degrees. The calculator shows all slope formats: percentage, degrees, radians, decimal slope, and rise per 100 run.
Use the toggle to switch to Percent → Degrees mode for the reverse conversion.
Formula for converting degrees to percentage slope
The formula starts with converting degrees to radians, then uses the tangent to get the slope ratio:
\text{radians} = \text{degrees} \times \frac{\pi}{180}\text{percentage} = \tan(\text{radians}) \times 100