This calculator provides a reasonable estimate of proper material volume. However, land-surface irregularities and varying application depths will affect realized coverage. It is suggested you round the estimate up slightly to insure satisfactory results.
Using a calculator is a great way to determine the amount of material you need for the project you are working on. The first step is to decide what kind of material you require for your project, then you will want to measure the Length & Width in Feet of the area where you need the material. Then measure the Depth in Inches.