Quick answer: This 40′ Dry Container (40DC) Loading Guide explains how to assess cargo against a standard 40DC planning envelope, create a workable loading pattern, and verify weight distribution before release. A 40DC is an enclosed general-purpose ocean container for dry cargo. Use it in CBM3.net’s free 3D container loading calculator only when the equipment offered matches the 40DC profile, then compare the digital plan with the physical unit supplied for loading.
This guide is for shippers, freight forwarders, and warehouse teams planning cartons, cases, bagged goods, palletised freight, and mixed-SKU loads. It covers the current CBM3 planning profile, practical volume calculations, geometric fit, payload checks, and the operational decisions that must still be made outside the calculator.
40′ Dry Container (40DC) Loading Guide: profile overview
A 40′ Dry Container (40DC) is a standard enclosed dry freight container commonly used for general cargo that does not require temperature control. For container planning, nominal capacity is only one consideration. Internal dimensions, door access, payload, floor loading, cargo orientation, and loading sequence all affect whether the shipment can be loaded safely and efficiently.
The 40DC profile is suitable for cargo that can pass through the container doors and be safely placed on the floor or approved pallet supports. Typical examples include consumer goods, furniture, machinery in cases, textiles, retail cartons, paper products, and non-hazardous packaged materials. It is not a substitute for a reefer, open-top, flat rack, or a dangerous-goods-approved loading plan where those equipment types or approvals are required.
The current CBM3 planning profile records an internal envelope of 1,203 cm long, 235 cm wide, and 239 cm high. These figures support consistent planning, but individual containers can vary by manufacturer, age, repair condition, lining, floor condition, and door configuration. Always verify the unit positioned at the loading bay.
Current CBM3 40DC dimensions, volume and payload limits
The figures below describe the current 40DC equipment profile available in CBM3. They are planning values, not a replacement for the container CSC plate, carrier instructions, booking confirmation, or applicable road and port limits.
| CBM3 profile field | Current planning value |
|---|---|
| Equipment code | 40DC |
| Profile type | Sea container |
| Planning length | 1,203 cm |
| Planning width | 235 cm |
| Planning height | 239 cm |
| Calculated planning volume | 67.566495 m³ |
| Payload-check value | 28,600 kg |
| Payload state | Validated planning input |
| Evidence status | Conditional; physical-unit verification required |
The calculated volume of approximately 67.57 CBM represents the full rectangular planning envelope. It should not be treated as fully usable capacity for every shipment. Door-end clearance, pallet overhang, irregular cartons, non-stackable units, voids, and load-securing requirements can reduce usable capacity considerably.
CBM3 uses 28,600 kg as the current payload-check value for this profile. Payload is the maximum cargo weight permitted after allowing for the container’s tare weight within its gross mass limit. The available cargo payload for a specific booking may be lower because of carrier policy, road axle limits, rail restrictions, port rules, or destination-country regulations.
When a 40DC is the right planning choice
Select a 40DC when the shipping line, forwarder, or equipment release specifies that exact dry-container profile. Do not choose a 40DC simply because it is familiar or because its nominal CBM is close to the shipment volume. A 40′ high cube, palletwide unit, 20′ container, trailer, or another loading space may provide a more practical result if that equipment is genuinely available.
Start with cargo in its loadable condition. Enter the outside dimensions of the packed carton, crate, pallet, skid, or bundle—not the dimensions of the product inside. Include stretch wrap, corner boards, pallet footprint, overhang, protective packaging, and any protruding handles or fittings.
A practical example is a shipment of 24 EUR pallets measuring 120 × 80 × 150 cm. The palletised cargo volume is 34.56 CBM before allowing for handling gaps. The shipment may appear to fit easily within a 67.57 CBM envelope, but pallet orientation, side clearance, door access, and the intended loading pattern determine whether all 24 pallets can actually be positioned safely. The 40DC Container Loading Calculator should therefore be used to test the physical arrangement, not simply compare two CBM figures.
Simple carton volume example
A carton measuring 50 cm × 40 cm × 30 cm converts to 0.50 m × 0.40 m × 0.30 m. Its theoretical volume is:
0.50 × 0.40 × 0.30 = 0.060 m³ per carton.
Ten identical cartons total 0.600 m³. One hundred cartons total 6.000 m³. This is a useful starting point for freight rating and preliminary capacity planning, but it does not confirm that the cartons can be loaded in stable rows, rotated as needed, or stacked to the required height.
| Example cargo | Unit dimensions | Unit CBM | Quantity | Total theoretical CBM |
|---|---|---|---|---|
| Carton | 50 × 40 × 30 cm | 0.060 m³ | 10 | 0.600 m³ |
| Carton | 50 × 40 × 30 cm | 0.060 m³ | 100 | 6.000 m³ |
| EUR palletised load | 120 × 80 × 150 cm | 1.440 m³ | 24 | 34.560 m³ |
How Many Pallets and Cartons Fit in a 40′ Dry Container (40DC)?
A 40-foot dry container, also called a 40DC or 40′ standard container, is one of the most widely used container types in international shipping. Typical internal dimensions are approximately 12.03 m long, 2.35 m wide, and 2.39 m high, providing about 67.7 m³ of internal volume.
However, the actual number of pallets or cartons that can be loaded depends on cargo dimensions, stacking rules, packaging strength, weight, and the loading pattern.
How Many Pallets Fit in a 40DC?
Pallet capacity mainly depends on the pallet footprint. When pallets are loaded in a single layer, a 40DC can typically accommodate:
| Pallet Type | Pallet Size | Typical Quantity |
|---|---|---|
| Euro Pallet (EUR/EPAL) | 120 × 80 cm | 24–25 pallets |
| Industrial / ISO Pallet | 120 × 100 cm | 20–21 pallets |
| US GMA Pallet | 48 × 40 in (122 × 102 cm) | About 20 pallets |
For example, if your shipment uses Euro pallets measuring 120 × 80 cm, an optimized arrangement can fit about 25 pallets on the container floor.
If the cargo is safely stackable, two pallet layers may sometimes be possible. However, total cargo height, pallet strength, weight distribution, and container payload limits must always be checked.
How Many Cartons Fit in a 40DC?
Carton capacity varies considerably because carton sizes are not standardized. The examples below assume rectangular cartons loaded efficiently without pallets.
| Carton Size | Approx. Maximum Cartons* |
|---|---|
| 60 × 40 × 40 cm | 500 cartons |
| 50 × 40 × 30 cm | 840 cartons |
| 40 × 30 × 30 cm | 1,470 cartons |
| 30 × 30 × 30 cm | 1,960 cartons |
*These are theoretical dimensional estimates. Actual quantities may be lower because of door clearance, handling space, carton deformation, cargo orientation, dunnage, ventilation requirements, and weight restrictions.
For example, a carton measuring 50 × 40 × 30 cm has a volume of 0.06 m³. Simply dividing the container’s 67.7 m³ capacity by 0.06 m³ gives more than 1,100 cartons. However, this is not a realistic loading result because cartons must physically fit along the container’s length, width, and height. With an aligned loading pattern, approximately 840 cartons can fit.
For a more accurate result, enter your carton or pallet dimensions, quantities, and weights into the CBM3 container loading calculator. A 3D container loading plan can help you estimate realistic space utilization before booking your shipment.
Enter unit weight separately from volume. A low-CBM shipment can exceed a payload or axle limit, while a light shipment can run out of usable space because of its dimensions. For mixed loads, record the gross weight of each SKU or pallet rather than relying on a shipment average.
Why total CBM does not prove that cargo fits in a 40DC
Total CBM is a screening measure, not a loading instruction. A cargo total of 55 CBM may still fail in a 40DC if the freight includes tall pallets that cannot pass through the doors, long crates that cannot be turned into position, fragile cartons that cannot carry top loads, or incompatible items that must be segregated.
Geometric fit depends on the dimensions and permitted orientation of every load unit. It also depends on whether the remaining voids are usable. A narrow gap alongside a pallet row may be included in unused volume mathematically, yet be too small to accept another carton or permit safe handling.
Use CBM3.net to model actual cargo dimensions and allowed rotations in a visual 3D environment. The free tool provides real-time WebGL visualisation in Operational, Realistic Digital Twin, and X-Ray modes, allowing the planning team to inspect internal voids, blocked areas, and cargo position within the container.
For palletised freight, select an appropriate stacking approach rather than assuming every pallet can be double-stacked. CBM3 supports column, brick, and pinwheel pallet stacking patterns with support-surface validation. This helps identify cases where an upper pallet is not adequately supported by the layer below.
How to use the 40′ Dry Container (40DC) Loading Guide in CBM3
- Confirm that 40DC is the equipment code offered for the shipment, and check whether a high-cube or palletwide alternative is actually available.
- Measure every packed cargo type. Record length, width, height, quantity, unit weight, stackability, and permitted rotations.
- Upload a cargo list through CBM3’s CSV or Excel import tool when planning many SKUs. Auto column mapping helps reduce manual data-entry errors.
- Select the 40DC profile and enter handling restrictions, fragile status, non-stackable items, mandatory orientation, and any blocked floor areas.
- Run the 3D loading plan. Review placed quantities, unplaced quantities, utilisation, and the location of empty spaces.
- Check the three-axis centre-of-gravity result and distribution warnings. A load that fits geometrically may still create an unacceptable concentration of weight.
- Use the animated loading sequence to confirm which carton or pallet should enter first. This is particularly useful where access becomes restricted as loading progresses.
- For multi-stop deliveries, apply LIFO loading logic so the first delivery stop is positioned nearest the doors and later stops are loaded deeper in the container.
- Export a PDF packing guide with 3D snapshots, loading sequence, and centre-of-gravity diagrams for the warehouse, customer, or carrier file.
For larger shipments, CBM3 can also divide cargo across several units. Its multi-container planning workspace allows drag-and-drop reallocation, while the Equal FCL Solver can distribute mixed-SKU product kits into identical, balanced containers. This is useful when a shipment must be split into two or more 40DC units without creating materially different weights or product mixes.
Weight distribution, centre of gravity and axle considerations
Container payload is not the only weight issue. Freight must be distributed across the container floor so the centre of gravity remains controlled and the container can be handled and transported safely. Dense cargo loaded entirely at one end can create handling difficulties and may contribute to road axle-loading issues once the container is mounted on a chassis.
CBM3 calculates cargo centre of gravity across three axes and highlights road-compliance warnings based on the selected scenario. Treat these warnings as an early planning control. The final legal assessment must account for the actual tractor, chassis, axle spacing, road route, gross vehicle weight limits, and local regulations.
A sound general practice is to place the heaviest stable units low and distribute them along the container length where cargo compatibility permits. Do not place heavy freight on unsupported cartons, and do not use void space as a reason to create an unstable load. The securing plan must account for acceleration, braking, cornering, vessel movement, and handling forces.
Common 40DC loading mistakes
- Selecting equipment by a familiar description without checking the exact equipment code and physical dimensions.
- Entering bare product dimensions rather than final packaged, palletised, or crated dimensions.
- Assuming the nominal 67.57 CBM envelope is fully usable for every cargo mix.
- Ignoring door-opening limitations and discovering that tall or wide freight cannot enter the container.
- Allowing rotations in the plan that are prohibited by packaging, labels, liquid orientation, or product-quality requirements.
- Ignoring unplaced items because total shipment CBM appears lower than container capacity.
- Concentrating dense freight at one end without reviewing centre of gravity and transport implications.
- Treating a calculator payload check as carrier approval, road compliance, or a certified securing plan.
- Failing to rerun the plan after a change in quantity, pallet height, item weight, or delivery sequence.
What must be confirmed outside the calculator
A 3D loading plan is a practical planning aid, not a legal, engineering, or carrier-acceptance document. Confirm the actual container identity, internal condition, door clearance, floor condition, tare weight, gross mass limit, and permitted payload from the physical unit and applicable operating documentation.
Also confirm cargo-securing requirements, lashing points, dunnage, blocking and bracing, floor loading limits, dangerous-goods status, segregation rules, handling equipment, route restrictions, and destination requirements. Temperature control, certified restraint, dangerous-goods approval, and physical acceptance remain the responsibility of the relevant shipper, carrier, warehouse, and transport parties.
Where the actual container differs from the CBM3 profile, the physical unit and its documentation govern. Update the dimensions in the plan, select a more accurate profile, or rework the cargo arrangement before loading begins.
Related loading-space guides
Compare this profile with the 45′ High Cube Container (45HC) Loading Guide and the 40′ High Cube Container (40HC) Loading Guide when those units match the equipment available for the shipment. For other container, trailer, rail, ULD, swap-body, and pallet options, return to the Loading Space Guides.
CBM3 supports 36 equipment profiles and is free to use without a paywall. Plans can be shared by unique plan code or through WhatsApp, Telegram, Teams, and email, making it easier to align sales, transport planning, and warehouse operations before freight reaches the loading bay.
Conclusion: plan the 40DC load from real cargo data
A reliable 40′ Dry Container (40DC) Loading Guide starts with measured cargo, the correct equipment profile, and a realistic view of physical constraints. Calculate CBM, but do not stop there. Test orientation, stacking, door access, unplaced cargo, weight distribution, and loading sequence before issuing warehouse instructions.
Open the free CBM3 40DC Container Loading Calculator to build a visual 3D scenario from your actual cargo list. Retain the planning assumptions, verify the physical container, and complete all operational, carrier, and regulatory checks before loading.