The exterior dimensions of a 20 foot long shipping container is 8 feet wide by either 8 feet 6 inches or 9 feet 6 inches. The height is dependent on whether it is a standard or high cube model.
Internally, a 20 foot long shipping container is 19 feet 3 inches long by 7 feet 7 inches wide. The height, dependent on the standard or high cube designation, is either 7 feet 9 inches or 8 feet 9 inches. This type of container features 150 square feet of floor space and an internal volume of either 1,160 or 1,310 cubic feet. It weighs approximately 2.4 tons when empty.