40ft Container Loading Guide: Dimensions, CBM and Box Fit

A standard 40ft dry container offers about 67 cubic metres of interior space. That does not mean every shipment below 67 CBM will fit. The 40DC loading planner tests the quantities you enter against dimensions, rotation, stacking and cargo weight. This guide explains the inputs and provides two reproducible loading examples.

Quick answer: CBM3’s 40DC profile is 1,203 cm long, 235 cm wide and 239 cm high: 67.566 m3 of calculated interior volume, with a 28,600 kg cargo planning limit. These are software defaults, not measurements or load approval for your assigned container.

What does 40DC mean?

In CBM3, 40DC selects a standard-height 40ft dry container. A booking may use another label, such as 40GP; confirm the equipment specification with the carrier. The nominal 40ft length is not the usable interior length. Refrigerated, high-cube and open-top equipment require their own profiles.

40ft container dimensions, door opening and payload

Check interior space, doorway clearance and weight separately. A box may fit inside yet fail to pass through the door. The fleet example below is not a universal specification.

Reference: Hapag-Lloyd, 40′ Standard, checked on 6 October 2026. The carrier notes manufacturer variation. Obtain the actual unit’s dimensions and ratings; do not substitute these example values for its plate or booking limits. The default CBM3 profile does not establish doorway clearance.

How many CBM can a 40ft container hold?

The CBM3 interior calculation is 1,203 x 235 x 239 / 1,000,000 = 67.566495 m3. For a cargo row measured in centimetres, multiply its packed length, width, height and quantity, then divide by 1,000,000. Add all rows for shipment CBM.

For example, 150 cartons of 40 x 60 x 80 cm occupy 28.800 m3. Subtracting this from container volume describes a volume difference, not a usable empty rectangular space. Gaps, orientation, stackability and weight can prevent additional cargo from fitting even when the volume total looks small.

How many boxes fit? Two tested orders

Enter the order you want to ship rather than treating a generic box count as capacity. Both orders were rerun in CBM3 11.63.58 on 12 October 2026 using both standard methods. Order B was also checked in the live browser and exported as the PDF below. The tests were run with no palletization or additional global rules. Width and length may swap horizontally; height stays unchanged. All rows are stackable, not fragile and have no additional maximum stack-weight limit entered. Use those permissions only when they are valid for your packaging.

These are checked software results for the entered orders, not maximum-capacity searches or physical loading trials. Independent checks covered quantities, dimensions, rotation, overlaps, container boundaries, support and cargo weight. They do not establish door passage, handling access, packaging strength or securing adequacy.

Real 40ft container loading calculator result and PDF

Order B was entered in the live 40DC calculator on 12 October 2026. Max Volume and Best Balance each placed all 110 cartons in one container, leaving no unplaced cargo. The selected Best Balance plan uses 41.280 m3, or 61.1% of this planning profile. The carton-weight subtotal is 4,300 kg; this excludes additional packing materials and container tare.

Download the 40DC mixed-carton example report (PDF)

The five-page report contains the entered quantities, per-container totals and loading-sequence images. Its transport checks deliberately remain not assessed: this synthetic example has no assigned container, complete material inventory, route or securing evidence. A software balance score is not a safety rating, and the cargo subtotal is not verified gross mass (VGM).

How many pallets fit in a 40ft container?

A bare-pallet footprint is not enough to answer. Measure each loaded pallet’s outside width and length, including overhang, its total height including the base, and gross weight including pallet tare. A wrapped load can be wider than its pallet, and a tall unit can be blocked by the doorway.

For already loaded pallets, use each complete unit as a box-shaped transport envelope with horizontal rotation only and stacking disabled unless expressly permitted. Do not palletize it again or add the base and tare twice. For loose cartons that still need pallets, use the palletization workflow instead. Test the entered pallet quantity; this guide does not promise a fixed Euro-pallet or GMA-pallet count.

40ft standard or high cube: which should you test?

CBM3’s standard and high-cube profiles share the same 1,203 x 235 cm floor. The high cube adds 30 cm of planning height, not extra floor width or length. It may help with upright tall cargo or an additional permitted layer, but it does not automatically increase the number of non-stackable pallets. Compare the same load and rules in the 40ft high-cube loading guide; do not compare results after silently changing rotation or stackability.

Build your own 40DC loading plan

1. Open the 40DC loading planner and check the selected equipment. An existing job or your own selection takes priority over the starting preset.
2. Choose metric or imperial before entering dimensions and per-item weights. Do not put inch values into centimetre fields.
3. Add a row for each different packed size or handling rule. Enter the quantity you actually intend to ship.
4. Keep Horizontal Only unless full 3D rotation is explicitly allowed. Set non-stackable, fragile and maximum stack-weight restrictions to match the real load.
5. Press Plan 3D Cargo Loading. In standard non-palletized mode, inspect Max Volume and Best Balance, including placed and unplaced quantities.
6. Review each container and its loading sequence. Confirm actual doorway clearance, handling and securing before using the plan operationally.

What the result does not approve

A geometric plan is not a transport-safety certificate. The IMO/ILO/UNECE CTU Code provides non-mandatory packing and securing guidance. Actual packaging, load distribution, restraint and handling still need competent review.

Cargo weight in this guide is not verified gross mass (VGM). IMO’s SOLAS guidance places VGM responsibility on the shipper for applicable vessel loading. The verified packed mass must account for the container and its contents, including pallets and securing materials, through the applicable approved process; a calculator total alone does not satisfy it.

Common 40ft loading questions

Does less than 67 CBM guarantee that my shipment fits?

No. CBM ignores shape and placement. One oversized piece can fail while a larger total volume of smaller, stackable cartons fits. Test the actual rows and inspect unplaced cargo.

Can I turn boxes onto their sides to fit more?

Only when their contents and packaging permit it. Horizontal Only preserves entered height. Full 3D Rotation is an explicit permission, not a recommendation to overturn pallets or ignore This Side Up requirements.

Will the planner prove that one container is the minimum?

No. It returns a computed arrangement for your inputs and constraints. A successful single-container result shows those entered units fit the checked software model; it does not certify the physical shipment or prove mathematical optimality.

References and review date

Technical references: Hapag-Lloyd, 40′ Standard; IMO/ILO/UNECE, CTU Code; IMO, Verification of the Gross Mass of a Packed Container. Technical references checked on 6 October 2026. Software reference: CBM3 11.63.58 equipment profile and the four method results above, rerun on 12 October 2026. Browse the loading-space guides for other equipment.