what is usps ground advantage cubic

what is usps ground advantage cubic refers to the cubic measurements used to calculate shipping costs for USPS Ground Advantage. Cubic pricing is based on the size of the package rather than its weight. USPS Ground Advantage uses a pricing model where the cost is determined by the cubic dimensions of the package, and the larger the package, the higher the shipping cost. Understanding the cubic measurement is essential for calculating accurate shipping rates for bulky items.