Math

Slope Percentage Calculator

Convert a rise-over-run slope to a percent grade and to degrees.

Slope

%

Angle

°

This free Slope Percentage Calculator covers Convert a rise-over-run slope to a percent grade and to degrees.

Percent grade is 100 times rise/run; the angle is arctan of that ratio. Other math tools are linked below.

Slope Percentage Calculator — how it works

Convert a rise-over-run slope to a percent grade and to degrees. Typical inputs are Rise and Run. How it works beside the form states the identity the Slope Percentage Calculator applies.

FAQ

How do I use the Slope Percentage Calculator?

Open the Slope Percentage Calculator, fill Rise and Run, and read the result. Percent grade is 100 times rise/run; the angle is arctan of that ratio.

What formula does the Slope Percentage Calculator use?

The Slope Percentage Calculator uses the identity in How it works. In words: Percent grade is 100 times rise/run; the angle is arctan of that ratio.

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