A Visual Guide to Standard Sea Containers
Exploring the specifications and applications of the backbone of global trade.
The Engine of Global Commerce
90%
of the world's goods are transported by the international shipping industry, with containers being the primary method.
The Workhorses: Comparing Dry Container Volume
Standard dry containers are the most common type. The 40ft container offers double the length of a 20ft, but the 40ft High Cube (HC) provides an extra foot of height, significantly increasing the internal volume for taller cargo.
Container Dimensions: Detailed Specifications
Understanding the precise dimensions of shipping containers is essential for effective cargo planning. Here are detailed specifications for standard 20ft and 40ft containers, including external and internal dimensions.

Visual representation of 20ft container key dimensions and specifications
Standard External Container Dimensions
| Parameter | 20ft (20 pēdu) | 40ft (40 pēdu) |
|---|---|---|
| Container Length | 6.06m | 12.19m |
| Container Width | 2.44m | 2.44m |
| Container Height: | ||
| » Standard | 2.59m | 2.59m |
| » High cube | 2.89m | 2.89m |
Standard Internal Container Dimensions
| Parameter | 20ft (20 pēdu) | 40ft (40 pēdu) |
|---|---|---|
| Internal Length | 5.87m | 12.00m |
| Internal Width | 2.33m | 2.33m |
| Internal Height: | ||
| » Standard | 2.35m | 2.35m |
| » High cube | 2.65m | 2.65m |
| End Door Aperture Width: | ||
| 2.28m | 2.28m | |
| End Door Aperture Height: | ||
| » Standard | 2.26m | 2.26m |
| » High cube | 2.56m | 2.56m |
| Floor Area | 13.93m² | 28.33m² |
| Cubic Capacity: | ||
| » Standard | 32.85m³ | 66.83m³ |
| » High cube | 37.09m³ | 75.32m³ |
| Weight (Tare) | 2.44 tonnes | 4.06 tonnes |
Important note: These dimensions apply to standard dry containers. Specialized containers, such as flat rack containers designed for oversized or heavy cargo transport, may have different specifications. Flat rack containers are particularly useful in freight forwarding when standard containers are not suitable due to non-standard dimensions or weight. Proper understanding of container dimensions helps optimize cargo placement and reduce transportation costs.
Payload Capacity: How Much Can They Carry?
While volume is important, the maximum weight a container can hold (payload) is critical. Flat Rack containers are engineered for the heaviest loads, while standard and high cube containers have similar weight limits despite volume differences.
Weight Breakdown: Tare vs. Payload
Every container has its own weight (Tare) which, combined with the cargo (Payload), must not exceed the Max Gross Weight. This chart shows the relationship between the container's own weight and its useful load capacity.
Choosing the Right Container: A Decision Guide
Your cargo's characteristics determine the right container. This guide helps you navigate the choice for specialized goods.
(Heavy/Wide)
(Tall)
(General Cargo)
Container Suitability Matrix
Different containers excel at handling different types of cargo. This radar chart visualizes the suitability of each container type for various cargo characteristics, rated on a scale of 1 (unsuitable) to 5 (ideal).
The Right Choice = Efficient Delivery
Choosing the right container is crucial for efficient and cost-effective shipping. Our experienced team can help you select the optimal container for your specific cargo.
💡 Tip: Always discuss your cargo requirements with a freight forwarder before booking.