Shipping Containers from China: Types, Dimensions, and CBM

1. Containers for shipping from China – what they are and how they work

A shipping container is a steel box with standardised dimensions, used to load, move, and unload goods by sea, rail, or truck. The whole idea is simple: your goods are loaded once into the container and stay there until they reach the final destination – without being repacked box by box along the way.

In practice, the same container can:

• leave the factory in China by truck,
• travel by vessel to Europe,
• and then continue by rail or truck all the way to your warehouse.

Because the dimensions are standardised worldwide, the container can be transferred easily between different transport modes without opening it or handling the cargo inside.

2. Main container types

The most common container types used for shipping from China are:

• 20ft standard container,
• 40ft standard container,
• 40ft High Cube (HC) container,
• Open Top container,
• Flat Rack container.

In reality, most importers will use a 20ft, 40ft, or 40ft HC container in about 90% of their shipments. Open Top and Flat Rack units are reserved for special, oversized, or very heavy cargo.

2.1 20ft container (standard)

The 20ft container is the classic choice for small and medium shipments. It’s ideal for cargo that does not take up a lot of space but is relatively heavy, such as metal products, machinery, or equipment.

Typical specs:

• Internal length: about 5.9 m
• Internal width: about 2.35 m
• Internal height: about 2.39 m
• Internal volume: roughly 33 CBM
• Typical max payload: around 28 t

In practice, 20ft containers are often chosen when cargo is dense and heavy, so you hit the weight limit before you run out of space.

2.2 40ft container (standard)

The 40ft container is the logical step up for larger shipments. It’s twice as long as a 20ft, with similar payload limits, which makes it great for goods that take more space but are not extremely heavy – for example textiles, electronics, or household goods.

Typical specs:

• Internal length: about 12.0 m
• Internal width: about 2.35 m
• Internal height: about 2.39 m
• Internal volume: roughly 67 CBM
• Typical max payload: around 28 t

Because of the balance between cost and space, the 40ft container is the most common choice for standard FCL shipments from China.

2.3 40ft High Cube (HC) container

A 40ft High Cube (HC) container is a taller version of the standard 40ft. The extra height gives you several more cubic metres of volume, which is perfect for light but bulky cargo.

Typical specs:

• Internal length: about 12.0 m
• Internal width: about 2.35 m
• Internal height: about 2.69 m
• Internal volume: roughly 76 CBM
• Typical max payload: around 28 t

If your cargo already fills the height of a standard 40ft by volume but is still far below the weight limit, it often makes sense to look at a 40ft HC instead.

2.4 Open Top container

An Open Top container has no fixed steel roof – instead, it uses a removable tarpaulin. It’s used for cargo that is too tall or awkward to load through the normal doors, so loading is done from above by crane.

Typical use cases include machinery, industrial equipment, cabins, structures, and other cargo that simply cannot fit through standard container doors.

2.5 Flat Rack container

A Flat Rack container has a floor and side walls, but no traditional roof and often no fixed front and back walls. It is designed for cargo that is too wide or too high for a regular container.

It is frequently used for large machines, construction equipment, vehicles, steel structures, and other “out of gauge” cargo that sticks out of standard dimensions.

3. Container dimensions, CBM, and payload

The table below shows approximate internal dimensions, volume (CBM), and typical maximum payload for the most commonly used container types.

CBM (cubic metre) is the measure of volume for your cargo. The basic formula is:

In practice, you should calculate the total CBM of your shipment and compare it with the container’s capacity to see whether LCL or FCL makes more sense. A more detailed comparison of LCL and FCL, including decision criteria, is available in section 3.1: LCL vs FCL – how to choose the right shipment type.

4. How to pack a container properly

Proper container packing is just as important as choosing the right container type. Poorly packed cargo can be damaged even if the container itself is sealed and never opened in transit.

• Use strong packaging – solid boxes, multi‑layer cardboard, extra edge protection.
• Fill empty spaces – use foam, sponge, air bags, or wooden bracing to stop cartons from moving.
• Distribute weight evenly – heavy pallets and cartons go on the floor and closer to the centre, lighter goods on top.
• Watch the total weight – do not exceed the container’s maximum payload limit.
• Protect against moisture and condensation – use plastic wrap, liners, and silica gel bags where needed.

For sensitive goods (electronics, glass, furniture), it almost always pays off to invest more in packaging, because the cost of damage is usually much higher than the cost of proper protection.

5. LCL vs FCL and container choice

Your choice between LCL and FCL is closely linked to how much of the container you actually fill. The closer you are to a full container, the more sense it makes to move to FCL.

As a rough rule of thumb, LCL usually makes sense up to around 12–15 CBM. Once you start filling most of a 20ft container, it’s often cheaper and cleaner to switch to FCL. For a deeper breakdown of LCL and FCL pros and cons, see section 3.1: LCL vs FCL – how to choose the right shipment type?.

6. The most common packing mistakes

• Packaging that’s not strong enough – weak boxes and poor protection lead to damage even with minor movement.
• Too much empty space inside the container – if the cargo can “walk around”, it can tip over, hit the walls, and break.
• Uneven weight distribution – too much weight on one side makes handling harder and increases risk.
• Ignoring the payload limit – overloading the container can cause loading issues, extra costs, or even refusal of carriage.
• Poor or missing labels – without clear markings like “fragile” or “this side up”, port workers do not know how to handle your cargo.

A good freight forwarder or logistics partner can usually give you very specific packing tips for your product type – make use of that knowledge before the shipment leaves China.

7. Conclusion

Choosing the right container type, understanding its dimensions and capacity, and packing it properly will directly affect your freight cost, damage risk, and overall import profitability.

Once you know your total CBM, total weight, and how often you import, it becomes much easier to decide whether LCL or FCL is a better fit, and which container type makes the most sense for your business.