20ft vs. 40ft Shipping Container: Which Size Do You Need?

The most common sizing mistake we see isn't buying too small — it's buying too big "just in case." A 40ft container costs more to buy, more to deliver, and takes up a lot more space than most people realize once it's actually sitting on their property. Here's how to size it right.

The Basic Numbers

A 20ft container gives you a solid amount of enclosed storage — roughly the equivalent of a one-car garage. A 40ft container roughly doubles that footprint, giving you something closer to a two-car garage or small warehouse bay.

Go With a 20ft If:

• You're storing tools, seasonal equipment, or inventory for a small business

• Space on your property is limited — 20 foot containers will fit in a lot tighter  spots that a 40 foot container simply won't

• You might want to move it again in the future (smaller containers are easier and cheaper to relocate)

• You're storing a single vehicle, ATV, or small equipment

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Go With a 40ft (or High Cube) If:

• You're storing multiple vehicles or large equipment

• You're converting it into a workshop, office, or livable space

• You're consolidating storage that would otherwise need two 20ft units

• You want the extra ceiling height a high cube offers 

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The Driveway Test

Before you decide on size, physically measure the space where the container will sit — including room for the delivery truck to maneuver. A 40ft container needs 120 feet of straight space to drop the container whereas a 20 foot container only needs 80. Things to also consider, Is my driveway tight or narrow? Do I have any low hanging powerlines (we need 12 feet of clearance) , are there any trees, street signs, fire hydrants or other obstacles in the way? Are there parked cars on the road that I might need to ask my neighbor to move? Basically just ask yourself “can a semi easily and reasonably put this shipping container where I want it” and if not you may need to find another spot, go with a smaller container, or find a way to move the container into its final spot via skidsteer, telehandler, tractor, crane, redneck ingenuity. 

Can You Start Smaller?

Yes — and it's worth considering. If you're not sure how much space you'll actually need, starting with a 20ft and adding a second unit later (rather than committing to a single 40ft) gives you flexibility. Two 20ft containers can also be positioned separately on a property in ways a single 40ft can't.

Our Advice

Tell us what you're storing, not just the size you think you want. We'll tell you honestly if a 20ft covers it — even if that means a smaller sale for us. Oversized and underused is a bad outcome for everyone.

Not sure which size fits your situation? [Get in touch] with a quick description of what you're storing, and we'll recommend the right fit.