How to Calculate Roof Slope Safely

Last Edited: 4/15/24


Are you looking to calculate your roof slope? If you are, there are numerous ways you can do it, and in this guide, we’ll explore two of them.

Calculating roof slope is done by calculating the number of inches your roof slope rises vertically for every 12 inches it extends horizontally. For example, if your roof rises 7 inches for every 12 inches of horizontal run, then your roof has a 7-in-12 pitch. The standard pitch of most residential roofs ranges between 4-in-12 and 9-in-12.

Why Should You Calculate Your Roof Pitch?

It’s good to know the measurements of your roof slope, particularly if you’re considering having any maintenance work done to your roof or want any new features suc