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How Wide is a Shipping Container: Complete Guide

How wide is a shipping container showing standard container width dimensions

How wide is a shipping container is a common question when planning to buy, rent, or convert one. These containers are essential for global trade, transporting goods safely across oceans, roads, and railways. They are also widely used as storage units, modular workspaces, and even innovative building structures. 

Knowing the width helps plan storage layouts, arrange pallets efficiently, and ensure the container fits transport and space requirements. Most standard containers have an exterior width of 8 feet, with slightly less interior space due to wall thickness.

This consistency makes stacking, loading, and transporting containers easier. Specialty units, like high cubes, flat racks, or open-top containers, may vary slightly to accommodate larger or irregular cargo.

This guide will cover different container types, their dimensions, and practical tips to choose the right shipping container for storage, shipping, or conversion needs.

How Wide Is a Shipping Container? Standard Dimensions

How wide is a shipping container showing standard dimensions

If you’re asking how wide is a shipping container, the standard exterior width for most dry van containers is 8 feet (2.44 meters).

However, interior width is slightly smaller, usually about 7 feet 8 inches. Due to wall corrugation and structural framing.

Here’s a quick overview of standard widths:

  • 10ft container – 8 ft wide.
 
  • 20ft container – 8 ft wide.
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  • 40ft container – 8 ft wide.
 
  • 40ft High Cube – 8 ft wide.
 
  • 45ft High Cube – 8 ft wide.
 

Although lengths and heights vary, width generally remains consistent across standard containers.

How Wide Is a Shipping Container for 20ft and 40ft Sizes

How wide is a shipping container for 20ft and 40ft sizes

If you’re wondering how wide is a shipping container, the dimensions for both 20ft and 40ft units are largely the same:

  • Exterior width: 8 feet.
 
  • Interior width: Approximately 7 ft 8 in (slightly smaller due to wall thickness).
 

This standard width ensures:

  • Easy stacking and loading across ships, trucks, rail systems, and container chassis.
 
  • Simplified logistics and reduced loading errors.
 
  • Efficient interior planning for pallets, shelving, or storage conversions.
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Key differences by container length:

  • 20ft container: Compact and versatile, perfect for smaller shipments or storage needs. Knowing how wide a shipping container is helps plan pallet layouts efficiently.
 
  • 40ft container: Offers double the length for larger cargo while maintaining the standard width, making it ideal for high-volume shipments.
 

Even specialty containers, such as reefers or high cubes, generally follow the 8-foot exterior width standard, ensuring compatibility across international transport systems. 

This consistency allows businesses and individuals to make informed choices when selecting containers for shipping, storage, or conversion projects.

Standard Dry Van Container Width Explained

Standard dry van container width showing common dimensions

Standard dry van containers are the most commonly used type for transporting dry goods such as clothing, electronics, and packaged items.

Even though their lengths range from 10ft to 45ft, their width remains consistent at 8 feet externally. This uniform measurement makes stacking, transporting, and storing containers efficient across global logistics networks.

If you’re planning shelving or pallet storage, knowing how wide is a shipping container is internally helps maximize space planning.

How Wide Is a Shipping Container Compared to Specialty Containers?

How wide is a shipping container compared to specialty containers

While standard containers are 8 feet wide, some specialty containers differ slightly depending on design and function.

Flat Rack and Open-Top Types

.Flat rack and open-top containers are typically:

  • 8 ft 6 inches wide (external frame width).
 
  • Interior usable width may vary due to structural components.
 

These containers are ideal for oversized cargo such as machinery, vehicles, and construction materials.

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Refrigerated and Tank Units

Refrigerated (reefer) and tank containers usually maintain the standard 8-foot exterior width. However, interior width may be slightly reduced due to insulation or tank framing systems.

When transporting temperature-sensitive or specialized cargo, it’s important to consider internal dimensions, not just exterior width, to ensure proper fit and protection of your goods.

Other Shipping Container Types and Their Width

Other shipping container types and their width showing different dimensions
  • Open Side Containers: 8 ft 6 in wide (external).
 
  • Duo-Con Containers: 8 ft 6 in wide.
 
  • Tank Containers: 8 ft 6 in wide.
 
  • Shipping Container Chassis: Built for 8 ft wide containers.
 

Most intermodal systems are designed around this consistent 8-foot standard.

Why Container Width Matters

Why container width matters for storage and project planning

This information helps you:

  • Plan pallet layouts efficiently.
 
  • Design interior conversions accurately.
 
  • Ensure transport compatibility.
 
  • Maximize storage capacity.
 
  • Avoid costly sizing mistakes.
 

When deciding which container to purchase or rent, it’s also important to factor in used shipping container cost. Knowing the price helps you plan your budget while selecting a container that meets your storage, shipping, or conversion needs.

For example, a standard 20ft container can typically hold 10–12 pallets, while a 40ft container can hold 25–30 pallets, thanks to the standardized width.

Conclusion

Conclusion on how wide is a shipping container showing key dimensions

So, how wide is a shipping container? In most cases, the standard width is 8 feet externally, with slightly less interior space due to wall thickness.

Whether you’re choosing a 10ft, 20ft, or 40ft container, the width remains largely consistent. Specialty containers may vary slightly, but global transport systems are built around the 8-foot standard.

Before purchasing or renting, always verify both exterior and interior dimensions to ensure the container meets your specific storage or shipping needs.

Looking for Shipping Container Sales Near You?

At On-Site Storage Solutions, we provide a wide range of shipping containers across approximately 60 depots in the United States and Canada.

Whether you need a small storage unit or a large commercial container, our team can help you find the right fit. Visit our website for a free quote or call (888) 977-9085to get started today.

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FREQUENTLY ASKED QUESTIONS

1. Are all shipping containers 8 ft wide?

Most standard shipping containers have an exterior width of 8 feet (2.44 meters). Some specialty containers, like flat racks or high cubes, may vary slightly, but the 8-foot standard is widely used for stacking, shipping, and storage compatibility.

2. How wide is a 20ft container?

A standard 20ft container is 8 feet (2.44 meters) wide externally, with an interior width of approximately 7 feet 8 inches. This standard width allows it to fit on ships, trucks, and rail chassis while accommodating pallets efficiently.

3. How wide is a high cube container?

High cube containers maintain the standard 8-foot exterior width. The main difference is in height: high cubes are typically one foot taller than standard containers, providing extra vertical storage space for cargo or conversion projects.

4. What is the difference between a 20ft container and a 20ft high cube container?

The primary difference is height: a standard 20ft container is 8 ft 6 in tall, while a 20ft high cube container is 9 ft 6 in tall. Width and length remain the same, but high cubes provide more vertical storage space.

5. What are the exterior dimensions of a 40 ft shipping container?

A standard 40ft container measures 40 feet long, 8 feet wide, and 8 ft 6 in tall externally. High cube versions are the same length and width but 9 ft 6 in tall, offering additional interior volume for cargo or storage conversions.

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  • July 12, 2023
  • By Gregg Schoenborn
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