The twenty-foot equivalent unit (abbreviated TEU or teu) is a general unit of cargo capacity, often used for container ships and container ports. It is based on the volume of a intermodal container, a standard-sized metal box that can be easily transferred between different modes of transportation, such as ships, trains, and trucks.]]

The standard intermodal container is long and wide.

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|2 Subtracting the tare mass of the container itself, the maximum amount of cargo per TEU is reduced to about .