Convert the degrees of an angle to percentage of slope with this online calculator.
Degrees to Percent

How do you convert degrees to percent?
To find the surface area of a cube, use the equation:
Cube
To convert, use this angle degrees to percent of slope formula:
Percentage
= [ Tan ( Degrees ) ] x 100
Example: An angle of 48 degrees would be:
Percentage of Slope = [ Tan ( 48 ) ] x 100
Calculated out this gives a slope percentage 111.06 percent because
the rise is greater than the amount of run by 11.06 percent.