A TEU, or twenty-foot equivalent unit, is the standard measure of container shipping capacity. One standard 20-foot container equals one TEU, and a 40-foot container equals two TEUs. Ports, ocean carriers, and vessels all use TEUs to describe how much cargo they handle or can carry.
If you import through PortMiami or Port Everglades, you will see TEU figures everywhere, from port volume reports to vessel specifications, because it gives the whole industry one common yardstick regardless of how containers are actually configured.
Why the shipping industry uses TEUs
Containers come in multiple lengths, mainly 20-foot and 40-foot, plus high-cube variants. Counting raw container numbers would be misleading because a 40-foot box carries roughly twice the volume of a 20-foot box. The TEU normalizes everything to a 20-foot baseline so a port can report, for example, that it moved one million TEUs in a year and everyone understands the scale.
TEU conversions at a glance
- 20-foot container = 1 TEU
- 40-foot container = 2 TEU
- 40-foot high-cube container = 2 TEU (taller, but still counted as two)
- 45-foot container = often counted as 2.25 TEU
Note that a 40-foot container is sometimes also called an FEU (forty-foot equivalent unit), which simply equals 2 TEU.
How big is one TEU in real terms?
A standard 20-foot container has roughly 1,170 cubic feet of internal volume and can hold around 9 to 11 standard pallets on a single tier, with a typical maximum payload near 47,000 to 48,000 pounds depending on the container and chassis. Actual usable capacity depends on how the goods are packed and weight limits for road transport.
Why TEUs matter for your drayage and warehousing costs
TEU is not just a statistic; it shapes how you plan and budget a shipment.
Drayage planning
Whether a load is a 20-foot or 40-foot container affects chassis type, weight distribution, and routing. Each physical container, regardless of TEU count, still needs its own truck move from the terminal, so two 20-foot boxes (2 TEU) require two drayage moves while one 40-foot box (also 2 TEU) requires one.
Warehouse space
When you transload or store imported goods, the cubic volume behind each TEU determines how much warehouse footprint and labor you need to unload and put away.
Moving TEUs through Miami efficiently
PortMiami and Port Everglades together handle well over a million TEUs a year, and terminal congestion is the main threat to a smooth import. Go Freight is an asset-based Miami 3PL with 100+ company-owned trucks and its own chassis pool, so it can dispatch the right equipment for each container without waiting on third-party chassis. Its AI gate-time prediction times pickups to avoid peak congestion, and its 104,000 sq ft bonded warehouse lets importers transload or store inbound TEUs immediately. Explore Go Freight’s drayage services to see how container moves are scheduled around real-time port conditions.
Frequently asked questions
What is the difference between TEU and FEU?
A TEU is a twenty-foot equivalent unit (one 20-foot container). An FEU is a forty-foot equivalent unit, which equals two TEUs. Both describe capacity, just at different baselines.
How many TEUs can a large container ship carry?
The largest ocean vessels carry well over 20,000 TEUs. The ships calling at Miami are generally smaller, but capacity is still always quoted in TEUs.
Does one TEU always mean one truck?
Not exactly. Drayage is per physical container. One 40-foot container is 2 TEU but a single truck move, while two 20-foot containers are also 2 TEU but require two truck moves.
Get a Miami freight quote today
Go Freight is an asset-based, AI-powered 3PL in Miami handling drayage, warehousing, hazmat, LTL, and last mile. Request a free quote or call (786) 445-0150.