Container sizes 20ft 40ft HC are the starting point for anyone planning to ship cargo by sea. Once you know how many pallets you have, how many cubic metres they occupy and how much they weigh, choosing the right container becomes straightforward; choosing wrongly means paying for empty space or booking a second container. The 20-foot standard, 40-foot standard and 40-foot high cube (HC) carry most of the world's containerised trade, and each has different internal dimensions, door openings, volume and payload. In this Özd Global guide, we compare container sizes 20ft 40ft HC with clear tables and explain how to match them to your cargo.
The Standard Container Types
Containers used in international sea freight are built to ISO standards, which allows them to be handled with the same equipment at every port worldwide. The three most common types are:
- 20-foot standard (20' DC / 20' GP): The most widely used unit, ideal for compact, heavy cargo.
- 40-foot standard (40' DC / 40' GP): Twice the length of a 20-foot, economical for bulky goods.
- 40-foot high cube (40' HC / 40' HQ): Same footprint as the 40-foot standard but roughly 30 cm taller.
Container Sizes 20ft 40ft HC Comparison Table
The values below are typical internal dimensions; a few centimetres of variation is possible depending on the manufacturer and the age of the unit.
| Specification | 20' Standard | 40' Standard | 40' High Cube |
|---|---|---|---|
| Internal length | 5.90 m | 12.03 m | 12.03 m |
| Internal width | 2.35 m | 2.35 m | 2.35 m |
| Internal height | 2.39 m | 2.39 m | 2.69 m |
| Door opening (W × H) | 2.34 × 2.28 m | 2.34 × 2.28 m | 2.34 × 2.58 m |
| Internal volume | ~33 m³ | ~67 m³ | ~76 m³ |
| Tare weight | ~2,200 kg | ~3,800 kg | ~3,900 kg |
| Maximum payload | ~28,000 kg | ~26,500 kg | ~26,500 kg |
| Euro pallets (1.20 × 0.80) | 11 | 25 | 25 |
| Industrial pallets (1.20 × 1.00) | 10 | 21 | 21 |
As the table shows, the 40-foot HC shares the floor area of the 40-foot standard yet offers about 9 cubic metres more volume. That difference is decisive for tall pallets and lightweight goods that can be stacked.
Tip: The door height is roughly 10 cm lower than the internal height. When loading tall machinery or pallets, work from the door opening rather than the internal height; otherwise the product may catch on the door frame during forklift loading.
Which Container for Which Cargo?
20-Foot Standard
The best fit for heavy, dense cargo. Marble, ceramics, steel coils, chemical drums and food products reach the weight limit long before the volume limit, and for these a 20-foot is more economical than a 40-foot. It is also the choice for small shipments that still need FCL security.
40-Foot Standard
Ideal when volume and weight are balanced. Medium-density goods such as furniture, textiles, white goods, automotive parts and plastics move efficiently in a 40-foot standard. Since the freight is not double that of a 20-foot, cost per cubic metre drops considerably.
40-Foot High Cube
The most efficient option for light, bulky cargo. For mattresses, foam, empty packaging, electronics and garments on hangers, the extra 30 cm allows double-stacking or taller pallet builds. Carriers now hold more 40-foot HC units than standard 40-foots, usually at the same rate.
To identify the right equipment for your cargo and obtain a current rate, visit the Özd Global sea freight page.
Points to Check When Choosing a Container
- Check weight limits: The container's maximum payload may differ from road and port weight limits. Road weight limits in Turkey and Europe are often below the container's theoretical capacity.
- Plan the pallet layout: The 2.35-metre internal width allows Euro pallets to be placed in one row lengthwise and one row crosswise. Do not estimate pallet counts without a layout plan.
- Remember the VGM declaration: Every container's verified gross mass must be declared before loading onto the vessel; the tare weight is printed on the container door.
- Compare product height with the door opening: This check is critical for machinery and large equipment.
- Inspect the container: Before loading, look for holes, damp and odours in the floor, walls and ceiling; this matters for food and textile shipments.
Choosing by Volume Calculation
To calculate your total cargo volume, multiply the length, width and height of each carton or pallet in metres, multiply by the quantity and add everything up. When comparing the resulting cubic metres with the container's internal volume, bear in mind that only 80-90 percent of the space is usable in practice; gaps between pallets and irregular shapes prevent full utilisation. A 55-cubic-metre load may fit a 40-foot standard on paper, but a 40-foot HC is often the safer choice. Using the container sizes 20ft 40ft HC table together with this practical ratio gives the most reliable result.
Özd Global removes this uncertainty by palletising cargo and preparing the stuffing plan at our warehousing and distribution facility in Gebze.
Frequently Asked Questions
What is the difference between a 40ft HC and a 40ft standard?
Both share the same floor dimensions; the HC is about 30 cm taller and offers 9 cubic metres more volume. Maximum payloads are nearly identical. The HC suits light, bulky cargo, usually at the same freight.
How many pallets fit in a 20ft container?
A standard 20-foot container holds 11 Euro pallets (1.20 × 0.80 m) or 10 industrial pallets (1.20 × 1.00 m) in a single tier. Stacking increases the count, but the total weight limit must not be exceeded.
What are the cubic volumes for container sizes 20ft 40ft HC?
A 20-foot offers roughly 33 m³, a 40-foot standard roughly 67 m³ and a 40-foot HC roughly 76 m³ of internal volume. In practice 80-90 percent of that space is usable, depending on the stuffing plan.
If you want to know which container type is most economical for your cargo, share your pallet count, volume and weight via our contact page or call +90 551 462 41 34. The Özd Global team will prepare a stuffing plan and recommend the right container for you.
