20-foot Container - Dimensions, Specs and Weight

20-ft Container at a Glance

The 20‑foot “dry van” container is the little workhorse you see stacked at the bows of most container vessels. Standardised under ISO 668 —it measures 20 ft × 8 ft × 8 ft 6 in (6.10 m × 2.44 m × 2.59 m) and provides about 32.6 m³ of usable volume — giving shippers a sweet spot between capacity and manoeuvrability. ITEH Standards

1. How Much Can You Really Fit Inside a 20‑ft Container?

Interior dimensions of a standard 20-ft container: 5.90 m long × 2.35 m wide × 2.39 m high — about 33 m³ of usable space once you account for the corrugated walls.. In practice that works out to:

For oddly‑shaped cargo, our free CBM calculator lets you confirm everything will fit before you book.

How Many Pallets Fit in a 20-ft, and Is It Enough?

A 20-ft container holds about 10 GMA pallets (48×40 in) or 11 Euro pallets (1200×800 mm) in a single floor tier. As a rule of thumb, a 20-ft makes sense up to roughly 25-28 m³ or 15 tonnes; beyond that, a 40-ft is cheaper per CBM. Below ~15 m³, compare against LCL before booking a full container.

2. Typical Cargo (and Why It Works So Well)

• Consumer goods – apparel, small appliances, flat‑pack furniture.
• Industrial inputs – metal parts, textiles, precision tooling.
• Perishables – food or pharma in a 20‑ft reefer variant.
• Heavy bulk – cement, steel coils, tiles that would breach truck weight limits in a 40‑footer.

Shippers choose the 20‑footer because dense or high‑value goods often max out weight long before volume, while the smaller footprint manoeuvres easily through older road and rail networks.

3. Weight Limits You Need to Respect

The empty (tare) weight sits around 2,300 kg; most carriers cap the gross at ≈ 28 t (25,400 kg) on a standard 20‑ft box. Maersk’s own spec sheet, for example, lists a payload ceiling of 28.2 t. (Maersk) Always double‑check both the ocean‑carrier limit and local road regulations to avoid last‑minute re‑stows.

4. What Really Drives Your Freight Rate?

Plan ahead—especially July–November (global peak season) or just before Chinese New Year—to lock in space before vessels sell out.

Worked Example: A Heavy 20ft that Weights Out

Scenario. A German manufacturer ships a 20ft Standard container of heavy machinery — declared value $35,000, gross weight 24,500 kg (near the 28,200 kg max payload ceiling) — from Hamburg, Germany to Houston, Texas. Worked cost:

Why 20ft not 40ft for this shipment: cargo weights out (24.5 t / 28.2 t = 87% of payload) at only ~12 m³, which is well under 20ft's 33 m³ capacity. A 40ft would have the same payload ceiling (~26.7 t max) but the heavy-payload surcharge stack does not improve. 20ft is correct.

Footnote: 20ft max payload (28,200 kg) is tighter than 40ft max payload (26,700 kg) because the 20ft frame uses the same 30,480 kg gross-weight rating across both lengths but the empty tare differs. ISO 668 governs. Refresh ocean rates quarterly.

5. FCL or LCL? A Quick Reality Check

• FCL (Full Container Load) makes sense once cargo hits about 28 m³ or 15 t—you control the seal, timing and stowage.
• LCL (Less than Container Load) suits smaller batches; you pay only for the cubic meters you use, but budget for extra handling and slightly longer transits.

Unsure? Feed your carton sizes into the CBM calculator—if it flags < 50 % utilisation, LCL is usually cheaper.

6. Packing Your 20‑ft Container for the Long Haul

1. ISPM‑15 pallets or crates to breeze through customs.
2. Shrink‑wrap plus desiccant for moisture control.
3. Even weight distribution to avoid floor warping.
4. Ratchet straps or air bags to keep dense cargo from shifting.
5. IMDG‑compliant labelling for hazardous goods – see the current IMO IMDG Code.

7. Why SMEs Love 20‑Footers for Long Routes

Smaller importers shouldn’t pay for cubic metres they’ll leave empty. The 20‑ft unit’s standard footprint moves seamlessly between ships, trucks and trains, minimizing transfers—while optional reefers, open‑tops and flat‑racks cover almost any commodity need.

Where the 20-ft Comes from: the TEU Standard

The 20-ft container is the basis of the TEU (twenty-foot equivalent unit), the standard measure of vessel and port capacity. The size traces to the ISO 668 standardisation that followed Malcom McLean's 1956 containerisation of ocean freight.

AI-Powered Freight Services at iContainers

Choosing a 20-foot container requires balancing weight limits, cargo type, and available space. iContainers uses AI to analyze shipment details and recommend the most efficient loading approach. This reduces wasted space and unexpected cost increases. Learn how AI improves container planning for real-world shipping scenarios.