ShipBox is the program that picks the perfect box to ship your merchandise. We designed ShipBox to ease the burden of figuring out the best box to use when shipping certain items that could have multiple box choices. Instead of having to do the math and figure it out for yourself, we designed ShipBox to do that for you. ShipBox is especially helpful if you use calculated shipping on a marketplace, so the buyer will pay the correct shipping for the size, weight and distance.