what is 5 cubic feet refers to the volume measurement used in shipping and logistics to determine how much space an item will occupy in a shipping container or vehicle. A cubic foot is the volume of a cube that has sides of one foot in length, and 5 cubic feet would be equivalent to 5 such cubes. Understanding cubic feet is essential when calculating shipping costs and selecting the right packaging for your goods, as it helps determine how much space your items will take up and the corresponding shipping charges.