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20ft Storage Container Dimensions and Capacity

Everything You Need to Know

If you’re considering a 20ft storage container for personal or business use, it’s important to understand its size, capacity, and how much you can store inside. In this guide, we’ll cover the dimensions, cubic metre (CBM) capacity, width, and length, helping you plan your storage efficiently.

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What Are the Dimensions of a 20ft Storage Container?

A standard 20ft storage container is based on ISO standard dimensions. Here’s a breakdown:

Dimension

Measurement

External Length

6.06 metres

External Width

2.44 metres

External Height

2.59 metres – standard height

Internal Length

5.90 metres

Internal Width

2.35 metres

Internal Height

2.39 metres

Door Width

2.34 metres

Door Height

2.28 metres

There are also “High Cube” versions with slightly more internal height for extra storage capacity.

How Long is a 20ft Container in Metres?

A 20ft container measures approximately 6.06 metres in external length, with about 5.9 metres of usable internal space. This makes it ideal for storing:

  • Household contents from a 3–4 bedroom house
  • Business equipment and inventory
  • Seasonal items like garden furniture or sports gear

How Wide is a 20ft Container?

The external width is 2.44 metres, while the internal width is 2.35 metres. This standard width allows easy access and efficient use of space for storage purposes.

20 feet storage container dimensions
Spacious storage unit filled with various household items including orange chairs, a washing machine, furniture pieces, green office chairs, boxes, and green bottles. Items are neatly organized inside a blue and white container.

How Many CBM (Cubic Metres) in a 20ft Container?

The storage volume of a 20ft container is calculated using its internal dimensions:

Internal Length × Width × Height = CBM

  • Standard 20ft container: 5.90 × 2.35 × 2.39 ≈ 33 cubic metres (CBM)
  • High Cube 20ft container: 5.90 × 2.35 × 2.69 ≈ 37 CBM

This shows that a 20ft container provides ample space for a 3–4 bedroom house, business stock, or a combination of personal and professional storage.

Spacious storage unit filled with various household items including orange chairs, a washing machine, furniture pieces, green office chairs, boxes, and green bottles. Items are neatly organized inside a blue and white container.

Tips for Using a 20ft Storage Container

  1. Plan Your Layout – Stack boxes and items carefully to maximize space.

     

  2. Weight Distribution – Store heavier items at the bottom to prevent damage.

     

  3. Accessibility – Keep frequently used items near the doors.

     

  4. Protect Items – Use covers or pallets to keep belongings clean and dry.

     

Climate Considerations – For sensitive items, consider using moisture absorbers inside the container.

Your 20ft Storage Solution in Sheffield

A 20ft storage container is a versatile solution, offering approximately 33 CBM of storage space, with external dimensions of 6.06m long × 2.44m wide × 2.59m high. At Portland Self Storage, our containers are new, clean, dry, and secure, making them perfect for personal or business storage needs in Sheffield.

Whether you’re storing furniture, seasonal items, or business inventory, a 20ft container gives you plenty of space and peace of mind. Contact our friendly team today to find out more.

📞 Call: 0114 400 0114
 📧 Email: info@portlandselfstorage.co.uk
 🌐 Book Online Today

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