Concrete is measured by the cubic yard. An example of a cubic yard would be 3′ by 3′ by 3′ = 27 cubic feet or 1 cubic yard. If you’re doing this measurement yourself at home, you’ll want to measure the length (in feet) multiplied by the width (in feet) multiplied by the depth (in feet) this will give your cubic footage, then divide that number by 27 and that will give you the cubic yardage needed for your project.