What Are the Different Shipping Container Sizes

November 21, 2025

Shipping containers come in various sizes to suit a wide range of transport and storage needs. Whether you are shipping goods overseas or storing items on-site, understanding the differences in container dimensions is key. Unit Group provides containers in multiple sizes, including compact and large options, helping businesses and individuals find the ideal fit for every project.

Understanding Standard Shipping Container Dimensions

Standard shipping container dimensions are designed for easy global transport and stacking. Most containers follow ISO standards, ensuring consistency in width and height. The common internal width is about 2.35 metres, while height varies depending on whether you choose a standard or high cube container. Unit Group offers containers built to these precise standards, ensuring they fit securely on trucks, ships, and storage yards.

Common Shipping Container Sizes Used Worldwide

20ft and 40ft Container Measurements Explained

Globally, the 20ft and 40ft containers are the most used sizes. The 20ft container, often used for general cargo, measures around 6.1 metres in length, while the 40ft version doubles that space. These container dimensions make them versatile options for freight, business storage, and modular site setups. Unit Group offers both 20ft containers and 40ft containers for hire or purchase, ensuring flexibility across industries.

What Is the Size of a 20ft Shipping Container?

The 20ft container is widely regarded as a standard choice for shipping and storage. Its external dimensions typically measure 6.06m x 2.44m x 2.59m, providing a capacity of about 33 cubic metres. Unit Group provides 20ft shipping containers suitable for commercial and personal use. Compact yet spacious, this size is perfect for medium loads, making it one of the most efficient options for logistics and construction sectors.

Internal and External Dimensions of a 20ft Container

Typical Uses for 20ft Containers

Internally, a 20ft container offers roughly 5.9 metres of length, 2.35 metres of width, and 2.39 metres of height. This space is ideal for transporting tools, equipment, or household goods. Many businesses use this size as a temporary storage unit or workshop. Unit Group offers 20ft units that are secure, weatherproof, and easy to deliver to any UK site.

What Is the Size of a 40ft Shipping Container?

A 40ft shipping container measures about 12.2 metres in length and offers nearly 67 cubic metres of space. It’s ideal for larger cargo, industrial goods, or on-site storage. Compared to smaller containers, the 40ft option provides better value per cubic metre. Unit Group offers 40ft shipping containers for hire and sale, giving clients the benefit of greater storage efficiency and durability.

Differences Between 40ft Standard and 40ft High Cube Containers

When to Choose a 40ft Container for Your Business

The main difference between a 40ft standard and a 40ft high cube container lies in height. High cube models add about 30 centimetres of extra internal height, perfect for taller goods. Businesses often select this option when they need extra vertical space for machinery or shelving. Unit Group provides both standard and high cube models, ensuring a practical solution for every requirement.

What Are High Cube Containers and Their Dimensions?

High cube containers stand taller at approximately 2.9 metres in height. This extra headroom allows for easier loading and storage of oversized items. They are ideal for construction, warehousing, and large-scale shipping projects. Unit Group offers high cube containers that meet ISO standards and deliver reliable performance for heavy-duty use.

Specialist Container Sizes for Specific Applications

Not all projects suit standard containers. Some require specialist designs for access, temperature control, or double-entry convenience. Unit Group provides a full range of sizes, including 8ft, 10ft, 30ft, and 45ft containers. Each option serves unique needs, from compact site storage to international freight transport.

Refrigerated, Double Door, and Full Side Access Containers

Choosing the Right Specialist Container Size

Some applications require easy access or temperature control. Double door and full side access containers make loading large or irregular items simple, while refrigerated units protect temperature-sensitive goods. Unit Group offers various container sizes and types to meet these needs, ensuring safe and efficient storage for different industries.

How to Choose the Right Shipping Container Size for Your Needs

Selecting the correct container depends on how much you need to store or transport. Consider the available space, intended use, and delivery access. Unit Group helps clients assess their project requirements and recommends the most cost-effective and practical container size. With options ranging from small portable units to large industrial storage, there’s a solution for every business.

Container Size Comparison Chart

A comparison chart can help visualise size differences between models. For instance, a 6ft container suits small storage areas, while a 45ft container supports bulk transport. Unit Group’s container size guide includes detailed specifications for every model, helping customers make informed choices before purchase or hire.

Final Thoughts on Selecting the Best Container Size

Choosing the right shipping container size can make a big difference in efficiency and cost. From compact 8ft units to large 45ft containers, each serves a specific purpose. Unit Group offers a complete range to meet residential, commercial, and industrial needs. With durable build quality and nationwide delivery, finding the perfect container has never been easier.