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Slope Percent Calculator

Calculate the percentage of a slope with this online tool.

What is the Slope?

If you're ever involved with putting together a building, you'll probably come accross the term "pitch". This term refers to rise-over-run of the roof. The slope is a measurement of an angle. If you look at the roof on your house youâ€™ll notice that it probably has an angle to it. This pitch is measured in the amount of rise for a given amount of run. In other words, for every unit of length you have horizontally, how many units of height are there? The percentage is the amount of rise divided by the amount of run. If your roof slope goes up 6 inches for every 12 inches of horizontal run, you have a 50% slope.

How do you calculate the percent of slope?

To find the percentage, use this slope percent formula:
Slope Percent = (Amount of Rise / Amount of Run) x 100

Example: The angle percent of a slope with rise of 6 units and run
of 10 units is:

Angle Percentage = (6 /10) x 100

Calculated out this gives an angle percentage of 60%.