Shipping Container Sizes Guide: Which One Do You Need?

Choosing the right shipping container is one of the most important decisions in international freight shipping. Pick a container that is too small and you are paying for a second shipment. Choose one that is too large and you are wasting money on unused space. Get it wrong on the type and your cargo could arrive damaged.

This guide covers every standard and specialty shipping container size used in international trade, with exact dimensions, weight capacities, typical costs, and real-world use cases to help you make the right choice.

Overview of Standard Container Sizes

Shipping containers are standardized by the International Organization for Standardization (ISO). The most common sizes used in global trade are:

The 20-foot and 40-foot containers account for approximately 90% of all containers in global trade. The 40-foot high cube has become increasingly popular due to its extra height, which is valuable for lightweight but bulky cargo.

20-Foot Standard Container

The 20-foot container is the baseline unit of container shipping — in fact, the term "TEU" (Twenty-foot Equivalent Unit) is the industry-standard measure of shipping capacity.

Internal Dimensions

• Length: 19 ft 4 in (5.90 m)
• Width: 7 ft 8 in (2.35 m)
• Height: 7 ft 10 in (2.39 m)
• Usable volume: ~1,172 cubic feet (33.2 CBM)

Weight Capacity

• Tare weight (empty container): ~5,071 lbs (2,300 kg)
• Maximum gross weight: 66,139 lbs (30,480 kg)
• Maximum payload: ~55,126 lbs (25,000 kg)

Best Uses

The 20-foot container is ideal for heavy, dense cargo where you hit the weight limit before filling the volume. Common uses include machinery parts, metal products, canned goods, beverages, construction materials, and smaller household moves. It can hold approximately 8 to 10 standard pallets (48" x 40").

For a typical household move, a 20-foot container accommodates a one to two-bedroom apartment — furniture, boxes, and appliances. If you are shipping furniture overseas, this is often the starting point. See our furniture shipping guide for more detail.

40-Foot Standard Container

The 40-foot container offers roughly double the volume of a 20-footer at less than double the cost, making it the most cost-efficient choice for larger shipments.

Internal Dimensions

• Length: 39 ft 5 in (12.03 m)
• Width: 7 ft 8 in (2.35 m)
• Height: 7 ft 10 in (2.39 m)
• Usable volume: ~2,390 cubic feet (67.7 CBM)

Weight Capacity

• Tare weight: ~8,333 lbs (3,780 kg)
• Maximum gross weight: 66,139 lbs (30,480 kg)
• Maximum payload: ~58,863 lbs (26,700 kg)

Best Uses

The 40-foot standard container is the workhorse of global trade. It handles everything from consumer electronics and clothing to auto parts and food products. It fits approximately 20 to 22 standard pallets and can accommodate a three to four-bedroom household for international moves.

Pro tip: While the 40-footer offers more volume than the 20-footer, the maximum gross weight is the same (30,480 kg). This means if you fill a 40-foot container with heavy cargo, you may reach the weight limit with significant volume still available. For heavy goods, two 20-foot containers often provide more usable weight capacity than one 40-footer.

40-Foot High Cube Container

The high cube container is identical to the standard 40-footer in length and width but adds one extra foot of height — and that extra foot makes a significant difference.

Internal Dimensions

• Length: 39 ft 5 in (12.03 m)
• Width: 7 ft 8 in (2.35 m)
• Height: 8 ft 10 in (2.70 m) — one foot taller than standard
• Usable volume: ~2,694 cubic feet (76.3 CBM)

Weight Capacity

• Tare weight: ~8,598 lbs (3,900 kg)
• Maximum gross weight: 66,139 lbs (30,480 kg)
• Maximum payload: ~58,598 lbs (26,580 kg)

Best Uses

The extra height is valuable for tall furniture (wardrobes, armoires, refrigerators), oversized retail displays, lightweight but bulky cargo (textiles, foam, packaging materials), and any situation where you need to stack cargo higher. The 40-foot high cube has become the default choice for household goods shipments and is increasingly popular for general cargo as well.

Many shipping lines now price the 40-foot high cube at the same rate as the standard 40-footer on major trade lanes, making it the better value in most cases. Always ask your freight forwarder if a high cube is available at the same rate.

Specialty Containers

Beyond standard dry containers, the shipping industry offers several specialty types for specific cargo needs:

Open Top Container

Standard dimensions but with a removable tarpaulin roof instead of a solid top. Used for cargo that is too tall to fit through a standard container door (machinery, industrial equipment, construction materials). Cargo is loaded from the top using a crane. Available in 20-foot and 40-foot sizes. Costs 20 to 40% more than standard containers due to limited availability.

Flat Rack Container

A container base with collapsible end walls and no sides or roof. Designed for oversized, heavy, or irregularly shaped cargo — boats, vehicles, large machinery, structural steel, and pipes. Available in 20-foot and 40-foot sizes. Cargo must be securely lashed to the flat rack using chains, straps, and blocking. Flat rack shipments often incur "out of gauge" surcharges if the cargo extends beyond the standard container footprint.

Refrigerated (Reefer) Container

Temperature-controlled containers with built-in refrigeration units capable of maintaining temperatures from -30 degrees C to +30 degrees C. Used for perishable food (meat, seafood, dairy, produce), pharmaceuticals, chemicals, and flowers. Available in 20-foot and 40-foot sizes. The refrigeration unit connects to the ship's power supply during transit and to a generator during trucking. Reefer containers cost 50 to 100% more than standard containers due to the specialized equipment and power requirements.

Tank Container

A cylindrical tank mounted inside a standard container frame. Designed for liquid cargo — chemicals, food-grade liquids (oils, juices, wine), and gases. Tank containers are built to strict safety standards and can handle hazardous and non-hazardous liquids. Capacity typically ranges from 5,000 to 6,500 gallons (21,000 to 26,000 liters).

How to Choose the Right Container Size

Follow this decision framework to pick the right container:

Step 1: Calculate your cargo volume. Measure every item's length, width, and height. Multiply to get cubic feet or cubic meters. Add 10 to 15% for packing materials and airspace between items.

Step 2: Calculate your cargo weight. Weigh or estimate every item. Remember that the container has a maximum payload, and road weight limits in many countries may further restrict the load (for example, US highway weight limits cap a loaded container truck at 44,000 lbs total in most states).

Step 3: Compare volume vs. weight. If your cargo is heavy relative to its size (machinery, metal, beverages), the 20-foot container often makes more sense because you will hit the weight limit before the volume limit. If your cargo is bulky but lightweight (furniture, clothing, plastics), the 40-foot high cube gives you the most usable space per dollar.

Step 4: Consider special requirements. Need temperature control? Use a reefer. Have cargo taller than 7 ft 10 in? Open top. Oversized and heavy? Flat rack. None of these? Standard dry container.

Step 5: Get quotes for multiple sizes. It is common for the per-CBM cost of LCL shipping to exceed the cost of a full 20-foot container once your shipment exceeds 10 to 15 CBM. Always compare LCL quotes against FCL to find the breakpoint.

Weight Limits and Load Planning

Understanding weight limits is crucial to avoid overweight penalties, port rejections, and safety hazards:

Container maximum gross weight: Every container has a CSC plate showing its maximum gross weight (container + cargo). For standard 20-foot and 40-foot containers, this is typically 30,480 kg (67,196 lbs).

Verified Gross Mass (VGM): Since 2016, the SOLAS (Safety of Life at Sea) convention requires every loaded container to have a certified Verified Gross Mass before being loaded onto a vessel. The VGM must be provided by the shipper and can be obtained by weighing the packed container or by calculating the sum of the container tare weight plus all contents. Containers without a valid VGM will be rejected by the shipping line.

Road weight limits: Even if a container is within its technical weight capacity, road transport regulations may impose lower limits. In the US, the maximum gross vehicle weight for a loaded container truck is generally 80,000 lbs (including the truck, chassis, and container). This effectively limits the payload of a 20-foot container to approximately 44,000 lbs and a 40-foot container to approximately 42,000 lbs when moved by truck.

Load distribution: Weight must be distributed evenly across the container floor to prevent tipping, structural damage, and unsafe handling. Heavy items should be placed on the bottom, centered, and spread across the full length. Never concentrate all weight at one end or one side.

Container Shipping Costs by Size

Here are approximate 2026 ocean freight rates for containers from the US East Coast:

These are port-to-port ocean freight rates and do not include origin drayage, customs, or destination delivery. Total door-to-door costs typically add $1,000 to $3,000 depending on origin and destination locations. Contact CargoHavn for an all-inclusive quote tailored to your specific route and cargo.

Tips for Maximizing Container Space

• Disassemble furniture and equipment. Removing legs, shelves, and detachable components reduces wasted airspace and allows tighter packing.
• Use uniform box sizes. Boxes of the same dimensions stack neatly with minimal gaps. Mixing random box sizes creates voids that waste space.
• Fill vertical space. Stack cargo to the ceiling (with lighter items on top). Every unused cubic foot above your cargo is money wasted.
• Fill gaps strategically. Use soft items (pillows, blankets, clothing, packing peanuts) to fill gaps between larger items. This also acts as cushioning.
• Load heavy items first. Place the heaviest items at the bottom and toward the door-end of the container for balanced weight distribution.
• Create a loading plan. Before the container arrives, sketch out where everything will go. Professional loaders at CargoHavn use 3D load planning software to optimize every container.

Frequently Asked Questions

Can I share a container with another shipper?

Yes, this is called LCL (Less Than Container Load) shipping. Your cargo is consolidated with other shippers' goods in a shared container. You pay only for the space you use. LCL is cost-effective for shipments under 15 CBM. Above that threshold, a full container often becomes the better value.

How many cars fit in a shipping container?

A standard 20-foot container fits one car (sedan or small SUV). A 40-foot container can fit two to three cars depending on their size and whether they are loaded using racking systems. For vehicle shipping, RoRo (Roll-on/Roll-off) service is often more cost-effective unless you are combining a car with household goods in the same container. See our vehicle shipping page for details.

What is the difference between TEU and FEU?

TEU (Twenty-foot Equivalent Unit) equals one 20-foot container. FEU (Forty-foot Equivalent Unit) equals one 40-foot container. So 1 FEU = 2 TEU. These terms are used to measure ship capacity and port throughput. A large container ship carries 10,000 to 24,000 TEU.

Do I need to buy a container or can I rent one?

For standard freight shipments, you do not buy the container — it is provided by the shipping line as part of the ocean freight service. You load it, ship it, and return it at the destination. If you need a container for storage or a one-way shipment where you keep the container, you can purchase new or used containers starting around $2,500 for a used 20-footer and $4,000 for a used 40-footer.

Are there containers larger than 40 feet?

Yes, 45-foot high cube containers exist and are used primarily in domestic and intra-regional trade (US domestic, Europe intra-EU). They are less common in international ocean freight because most ship cell guides and port equipment are optimized for 20-foot and 40-foot containers. A 53-foot container is also common in US domestic trucking but is rarely used for ocean freight.