What is the standard unit equal to one 20-foot shipping container?

The standard unit equal to one 20-foot shipping container is the twenty-foot equivalent unit, commonly abbreviated TEU.

A TEU is a measurement of cargo capacity rather than a single physical container type. A standard 20-foot-long container counts as one TEU, while a 40-foot container is generally counted as two TEUs. The unit lets ports, ships and logistics companies compare capacity even when containers have different lengths.

Containerization transformed international trade by placing standardized boxes onto ships, trains and trucks. Before widespread container use, cargo was often loaded piece by piece, a slower and more labor-intensive process. Standard containers reduced handling time, cargo damage and transfer costs.

TEU figures are used in rankings of container ports and ship capacities, but they do not measure weight. Two containers may each count as one TEU while carrying very different masses or cargo values. The related term forty-foot equivalent unit, or FEU, represents a 40-foot container.