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The Ultimate Guide to Choosing the Right Shipping Container Size

what size shipping container?

First Things First — What size shipping container?: What Are the Standard Container Sizes?

Let’s start with the basics. There are three main industry standard container sizes that you’ll find in most rental and sales catalogues:

Container SizeExternal Dimensions (L x W x H)Internal Dimensions (L x W x H)Approx. CapacityUse Case
20ft6.06m x 2.44m x 2.59m5.9m x 2.35m x 2.39m~33m³Storage, small business use, short-term site offices
40ft12.19m x 2.44m x 2.59m12m x 2.35m x 2.39m~67m³Long-term storage, stock holding, conversions
45ft HC13.7m x 2.44m x 2.89m13.5m x 2.35m x 2.69m~86m³Bulk storage, modified use, warehousing overflow

📌 Pro Tip: Always check internal dimensions, especially if your use involves equipment, racking, or furniture.

20ft Containers – The Most Popular and Versatile

The 20ft container is the bread and butter of the shipping container world. Compact, robust, and easy to deliver with minimal space or fuss, it’s a go-to option for both commercial and domestic users.

✅ Ideal For:

  • Garden and garage overflow
  • Tool and plant storage
  • Short-term construction site offices
  • Moving household goods

🧱 Pros:

  • Lower transport costs
  • Easier access in tight spaces
  • Strong resale value
  • Can be lifted with Containerlift side loader easily, even on constrained sites

⚠️ Considerations:

  • Might feel cramped for businesses with growing storage needs
  • Not suitable for pallet racking unless modified

40ft Containers – Best for Long-Term or Large Volume Storage

If you’re looking to store a serious amount of stuff, a 40ft container is probably what you need. At double the internal space of a 20ft but only marginally higher in cost, it offers much better value per square foot.

✅ Ideal For:

  • Builders’ merchants and equipment suppliers
  • Bulk retail or e-commerce stock
  • Archive and records storage
  • Modified container projects (e.g. kitchens, offices, pop-ups)

🧱 Pros:

  • Great space-to-price ratio
  • Perfect for racking, shelving, or conversion
  • Widely available in one-trip (nearly new) condition

⚠️ Considerations:

  • Needs more site clearance
  • Not suitable for narrow driveways or confined urban sites
  • Loaded weight must be checked if contents are heavy

45ft High Cube Containers – When You Need Serious Volume

The 45ft high cube isn’t for everyone — but for high-capacity jobs where every cubic metre counts, it’s a beast. Offering more length and height than a standard 40ft, it’s often used by logistics firms or companies doing container conversions.

✅ Ideal For:

  • Temporary warehousing
  • Modular office buildings
  • Large event equipment storage
  • Extra-tall storage needs (e.g. shelving or long equipment)

🧱 Pros:

  • Maximum volume
  • Fits two standard UK pallets wide
  • Plenty of height for modification or fit-out

⚠️ Considerations:

  • Only deliverable by specific vehicles (which Containerlift can provide)
  • Needs a solid site with extra clearance
  • Not always in stock — lead time can apply

Modified Containers – Think Outside the (Literal) Bo

Need a container that’s part office, part storage? Or a unit with lighting, electrics, and insulation? That’s where modified containers shine.

At Containerlift, we can deliver fully modified 20ft, 30ft, 40ft or 45ft units for:

  • Offices
  • Canteens
  • Toilets and welfare units
  • Workshops
  • Showrooms and pop-ups

With side loader delivery, we can even place these fully kitted units straight onto your site with zero hassle.

🔧 Things You Can Modify:

  • Doors and windows
  • Internal walls or partitions
  • Electrics and lighting
  • Shelving and racking
  • Heating, insulation, or ventilation
  • Security upgrades
  • Don’t Forget Site Access — Size is Only Part of the Picture

A container may technically fit your storage needs — but can it fit down your driveway? Or into your farmyard? Or onto the building site behind your office?

Here’s what you’ll need to consider:

🔍 Access Checklist:

  • Width of entrance gates or roads
  • Overhead cables, tree branches, or signage
  • Turning space for the truck
  • Surface stability (concrete, hardcore or stable ground)

Containerlift can perform a pre-delivery access survey, and our side loader trucks mean we can lift the container off and place it in a variety of locations — even when space is tight.

Renting vs Buying — How Container Size Affects Cost

Container SizeAvg. Weekly RentalTypical Purchase Price (Used)Typical Purchase Price (New)
20ft£15–£25£1,200–£2,000£2,500–£3,500
40ft£20–£35£1,800–£3,000£3,500–£5,000
45ft HC£30–£45£3,000+£5,500+

📝 Note: Prices vary by location and market demand — always check with our team for the most accurate quote.

If you’re not sure how long you’ll need the container, renting might be the better short-term solution. If you’re converting it or planning long-term use, buying is usually the more cost-effective option.

The Containerlift Advantage

Here’s why customers across the UK and Europe use Containerlift for their container sizing, sourcing, and delivery:

  • ✅ We stock all standard sizes plus modified units
  • ✅ Self-loading vehicles for fast and flexible delivery
  • ✅ Nationwide & European coverage
  • ✅ Support from real humans — not just online forms
  • ✅ Competitive rental and purchase rates

You won’t find us hiding behind jargon or red tape. We’re here to make your container journey easy.

Case Study: Right-Size Success for an Events Company

Client: A touring event logistics firm based in Yorkshire
Need: Multiple container units for gear, merch and staff use — across different festival locations
Challenge: Each site had different access, clearance and space constraints
Solution:

  • Initial consultation to map their usage needs
  • A mix of 20ft, 40ft and 45ft containers delivered on-demand
  • Self-loading delivery used to place containers at tight sites
  • Containerlift provided split delivery service over 4 weeks to multiple locations

Results:

  • All units delivered on time, in the right size, no excess cost
  • No cranes or extra labour needed
  • Client now uses Containerlift exclusively for all seasonal festivals

Client quote:

“Trying to do this with flatbeds would have been a nightmare. Containerlift made the whole operation slick. The team even helped size our containers based on packing volume — total lifesavers.”

Not sure what size container you need?

Talk to our expert team for honest advice, quick quotes, and stress-free delivery — whatever the size, wherever the site.

📞 Call us today or request a callback:
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