THE QUICK ANSWER

A 40ft gives roughly twice the floor area of a 20ft but typically costs only 30–60% more. In 2026 a used cargo-worthy 20ft is about $1,700–$2,800 at the depot and a used cargo-worthy 40ft about $2,100–$3,400. Choose the size your layout and delivery route can actually use, then compare delivered totals.

The practical comparison

Both standard formats are nominally 8ft wide and 8ft 6in tall outside. Choosing 40ft gives you more length, not a wider doorway. Tall loads may require a separate standard-versus-high-cube comparison.

Decision20ft40ft
External floor footprint160ft²320ft²
Storage layoutShorter retrieval distanceMore zones and longer access aisle
Site planningSmaller permanent footprintLonger placement area
DeliveryStill needs truck accessConfirm longer run-out and turns
Cost comparisonHigher cost per square footLower cost per square foot if you use the space

What each size costs in 2026

These are container-only prices at the depot, before delivery and sales tax. They combine two published 2026 US price guides, checked on October 17, 2026. Where the guides differ, the table shows the wider range.

Delivered within 50 miles and set on timbers, a used 20ft typically lands around $2,200–$3,900 all in and a used 40ft high cube around $2,600–$4,600. Delivering a 40ft usually costs only a little more than a 20ft over the same distance, which is why the 40ft usually wins on cost per square foot.

Condition20ft standard40ft standard40ft high cube
Used, wind and watertight$1,250–$2,300$1,700–$2,900$1,700–$3,200
Used, cargo-worthy$1,700–$2,800$2,100–$3,400$2,100–$3,500
One-trip (near new)$2,500–$4,400$3,700–$5,125$3,700–$5,600

When a 20ft is the better fit

Start with a 20ft when the storage requirement is modest, the site is constrained or reaching everything from one end matters. It can be easier to organize a smaller unit than to pay for excess space that gradually fills with low-value overflow.

Do not choose it solely because the property entrance looks tight. A smaller container may still arrive on a substantial truck. Let the carrier review the route before assuming a 20ft order solves access restrictions.

When a 40ft is worth the space

A 40ft suits a larger inventory, longer materials or a layout divided into separate zones. Sketch frequently accessed items near the doors and occasional stock farther back. The value of the additional length depends on whether you can reach and use it.

If the delivery quote is similar to the shorter unit, the larger container may offer better space per dollar. That is a quote-specific comparison, not a rule. Include foundation work and the ongoing value of the yard space it occupies.

One 40ft or two 20ft units?

Two units can separate tools from inventory or provide access from different positions. They may also let you stage a purchase as the business grows. Against that, count both purchase prices, deliveries, locks and placement work.

Write out the likely daily movements: how often a person crosses between units, where loading happens and what must be retrieved. The useful comparison is operational layout and total cost, not just nominal capacity.

Compare cost per usable area carefully

Take delivered totals near the middle of the ranges above: about $3,000 for a used 20ft and $3,600 for a used 40ft high cube. Dividing by the external footprints gives about $18.75 and $11.25 per square foot. Repeat the calculation with your own quotes.

Now repeat the calculation using the part of your floor plan you can actually use. If half the larger box would remain unnecessary, its lower cost per square foot is not a reason to spend more. Choose enough useful space with an appropriate allowance for expected growth.

Common questions

Does a 40ft hold twice as much?

It provides roughly twice the floor space and empty interior volume of a 20ft standard. Practical capacity depends on packing, access and load limits.

How much more does a 40ft cost than a 20ft?

At the same grade, a 40ft typically costs 30–60% more than a 20ft at the depot. In 2026 a used cargo-worthy 20ft is about $1,700–$2,800 and a used cargo-worthy 40ft about $2,100–$3,400.

Is a 20ft always cheaper to deliver?

No. Distance, truck type, routing and unloading conditions affect the quote. Compare actual delivered totals.

Sources & approach

Technical references and supplier guidance used for this guide. Recommendations and worked examples are EzyTrader’s editorial analysis; supplier-specific requirements still need confirmation.

Images are illustrative, not available inventory. Read our editorial approach.