We know that it can be confusing figuring out how much material you will need for you job, especially when doing the math to figure out how many "cubic yards" you need - we've made this as easy as we can for you to figure out. If you use the calculator below, all you need to do is put in the dimensions of the space you are trying to fill. Measure the length and width of your job, and then use '3' for the height. 3 inches is the typical depth/height that we suggest using for a new job. However, if you are just refreshing your mulch each year, you can get away with 1 or 2 inches for the depth/height depending on your taste.