A container is a rectangular box with a steel shell used for transporting goods by sea and land. It has a high cargo capacity, varying according to its type. The size of containers is measured in feet. The dimensions and payload of containers are standardized according to two specifications:
ISO 668:2013: Series 1 freight containers – Classification, dimensions, and ratings
ISO 1496-1:2013: Series 1 freight containers – Specification and testing
| Container type | Length (m) | Width (m) | Height (m) | Volume (m3) |
|---|---|---|---|---|
| 20 feet container | 5.898 | 2.352 | 2.395 | 33.2 m3 |
| 20 feet refrigerated container | 5.485 | 2.286 | 2.265 | 28.4 m3 |
| 40 feet regular container | 12.032 | 2.35 | 2.192 | 67.6 m3 |
| 40 feet high container | 12.023 | 2.352 | 2.698 | 76.3 m3 |
| 40 feet refrigerated container | 11.572 | 2.296 | 2.521 | 67.0 m3 |