What are the widths of a shipping container
What is the width of a shipping container?
The width of a shipping container is one of the most important and strictly standardized dimensions in international transport. In accordance with the ISO 668 standard and other related standards (such as ISO 1161, ISO 1496, ISO 3874), the external width of the container is firmly set at 8 feet, which corresponds to 2.438 meters (often rounded to 2.44 m).
- This width is invariable for the vast majority of containers used in global logistics – from the most common 20ft and 40ft containers to High Cube variants and most specialized types.
- The only exceptions are some regional or non-standard containers, typically 53ft containers in the USA, which have a width of 8 feet 6 inches (2.59 m).
Internal width and door width
- Internal width of a standard container: approximately 2.350–2.352 m (7′ 8″–7′ 8.6″)
- This value is lower than the external width due to the thickness of the corrugated steel walls (approximately 40–45 mm on each side), which ensures structural strength and durability.
- Door width (door opening): approximately 2.340 m (7′ 8.1″)
- The doors are only minimally narrower than the internal width, which allows comfortable loading of pallets, machinery and bulky goods.
| Dimension type | Value (m) | Value (ft/in) |
|---|---|---|
| External width | 2.438 | 8′ 0″ |
| Internal width | 2.350–2.352 | 7′ 8″–7′ 8.6″ |
| Door width | 2.340 | 7′ 8.1″ |
Why is standardized width so crucial?
The standardization of container dimensions, particularly width, was a crucial revolution in logistics and enabled the emergence of a global container transport system. Previously, goods had to be transshipped whenever there was a change in the type of transport (ship–rail–truck), which was inefficient, time-consuming and expensive.
Key advantages of standardized width:
- Intermodality: All standard containers fit on ships, railway wagons and road chassis without any modifications – thanks to this, containers can be stacked and safely transported across continents.
- Efficiency of transshipment and handling: All handling equipment (cranes, gantry lifters, reachstackers) are designed precisely for the width of 2.438 m, which enables rapid transshipment in ports.
- Safety and stacking: Fixed dimensions allow precise stacking of up to 8–9 layers of containers on ships. Corner elements (“corner castings”) are designed precisely to withstand this load and safely transfer forces.
- Global compatibility: Unification of width enables manufacturers, carriers and customers from around the world to plan transport without the risk of incompatibility.
Dimensional tolerances according to ISO
- Width is prescribed with precision to several millimeters and manufacturers must comply with the established tolerances to ensure compatibility during stacking and handling.
- Dimensions are always measured at a temperature of 20 °C (68 °F), which accounts for thermal expansion of the material.
Detailed overview of common container types and dimensions
Standard types and dimensions (according to ISO 668)
10ft container
- External dimensions: 2.991 × 2.438 × 2.591 m (L×W×H)
- Internal dimensions: 2.831 × 2.350 × 2.390 m
- Door width: 2.340 m
- Empty weight/payload capacity: 1,300 kg / 8,860 kg
- Use: Local storage, mobile workshops, pop-up stands. Not suitable for international transport (not counted in TEU).
20ft container (standard)
- External dimensions: 6.058 × 2.438 × 2.591 m
- Internal dimensions: 5.898 × 2.352 × 2.390 m
- Door width: 2.340 m
- Volume: approximately 33.2 m³
- Payload capacity: approximately 28,360 kg, MGW 30,480 kg
- Use: Basic building block of container transport. Ideal for heavy goods (metals, paper, chemicals).
40ft container (standard)
- External dimensions: 12.192 × 2.438 × 2.591 m
- Internal dimensions: 12.032 × 2.352 × 2.390 m
- Door width: 2.340 m
- Volume: approximately 67.7 m³
- Payload capacity: approximately 26,970 kg, MGW 30,480 kg
- Use: Furniture, electrical goods, textiles, building materials, also often used for modular construction.
40ft High Cube container
- External dimensions: 12.192 × 2.438 × 2.896 m
- Internal dimensions: 12.032 × 2.352 × 2.698 m
- Door width: 2.340 m
- Volume: approximately 76.4 m³
- Use: Oversized, lightweight goods, conversion to residential/mobile structures.
Other variants
- 45ft High Cube: 13.716 × 2.438 × 2.896 m (internal width and door width again 2.35–2.34 m)
- 48ft and 53ft containers (especially USA/Canada):
- 53ft: 16.15 × 2.59 × 2.896 m (internal width up to 2.489 m, door width approximately 2.480 m)
- 48ft: 14.63 × 2.438 × 2.896 m
Pallet Wide containers (Europe)
- Width up to 2.462 m to allow loading of two EUR pallets side by side without a gap.
- Common in intra-European rail and road transport.
Structural details and container marking
Corner elements – “corner castings”
- Each container has 8 corner elements with precise dimensions and holes for twist-locks (securing during stacking, handling and transport).
- Must be manufactured according to ISO 1161 to ensure compatibility with handlers and safety systems worldwide.
Marking and labels
- Identification code: For example, MSCU 123456 7
- First 3 letters – owner/brand (registered with BIC)
- Fourth letter – type (U = cargo container)
- 6-digit number + check digit
- CSC label (Convention for Safe Containers): Mandatory for international transport, contains maximum payload capacity, year of manufacture, test pressures, etc.
- Weight specifications:
- Tare (empty): approximately 2,200–4,000 kg depending on type
- Payload: up to 28,000 kg (for 20ft), 27,000 kg (for 40ft)
- MGW: maximum permitted total weight (Tare + Payload)
Special types and container variants
High Cube containers
- Same width and length, but height 2.896 m (9′ 6″).
- Internal height over 2.69 m.
- Suitable for light bulky goods, conversion to residential spaces.
Pallet Wide containers
- Width up to 2.462 m allows two EUR pallets (1.2 m) side by side.
- Common in European truck transport.
Special containers
- Open Top: Removable roof for crane loading, same width.
- Flat Rack: Without side walls, width consistent with standard.
- Reefer: Refrigerated containers, same dimensions, insulation reduces internal width by up to 10 cm.
Comparison of standard and High Cube containers
| Feature | Standard (GP) | High Cube (HC) |
|---|---|---|
| External height | 2.591 m | 2.896 m |
| Internal height | 2.390 m | 2.698 m |
| Internal width | 2.350 m | 2.350 m |
| Door width | 2.340 m | 2.340 m |
| Internal volume | 33.2–67.7 m³ | 37.4–76.4 m³ |
| Payload capacity | 28,300 kg (20ft) | 28,000 kg (40ft) |
Handling, stacking and safety
- Containers are designed to be safely stacked up to a height of 8–9 layers (on ships).
- Corner elements and construction ensure load transfer from one container to another, which is key to stability at sea.
- All dimensions must be within ISO tolerance to ensure safety during stacking, transport and handling.
- When handling, it is always necessary to consider the distribution of the center of gravity (see ISO 3874 recommendations), especially for unevenly loaded or special containers (e.g., tank, reefer).
How to choose the right container size and type?
Important selection factors:
- Purpose of use: Transport (type of goods, weight/volume), storage, modification to residential or office spaces.
- Space limitations: Do the length/width match the possibilities of transport or land?
- Regional availability: 53ft containers are not common in Europe, but they are in the USA.
- Price and availability: A 40ft container is usually more cost-effective than two 20ft containers.
- Special requirements: For example, Pallet Wide for maximum space utilization on pallets, High Cube for higher volume.
Frequently asked questions (FAQ)
1. What is the exact width of a container?
The external width is 2.438 m (8′). The internal width is approximately 2.350 m, the door width approximately 2.340 m.
2. Are there containers with greater width?
Yes, for example, 53ft containers in the USA have a width of 2.59 m (8′ 6″), Pallet Wide containers then have a width of up to 2.46 m.
3. Why is the internal width smaller than the external width?
Due to the thickness of the walls, which are made of corrugated steel for strength.
4. How many pallets fit in a 20ft/40ft container?
In a standard 20ft: 11 EUR pallets (1200×800 mm), in a 40ft: 24 EUR pallets. Pallet Wide container allows 12/25 pallets due to greater internal width.
5. Can containers be stacked?
Yes, up to 8–9 layers on ships, always with regard to maximum load and compatibility of corner castings.
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