Should your order go in a 20ft, 40ft or 40HC container? Compare the same packlist in each space and make the choice with a visible loading result.
A practical guide with inspectable inputs and a calculated example.Compare how your specific packages fit, not just their combined CBM. A 20ft container is shorter, a standard 40ft gives more floor length, and a 40HC adds height. Weight and handling restrictions can decide the result before the empty volume is filled.
Use packed external dimensions, quantities and gross weight per piece. Include pallets and packaging in those dimensions if the cargo will travel on them. Keep the same handling rules for every container comparison so that a change in the result really comes from the container.
Long or non-stackable cargo uses floor area. Taller equipment may leave more empty space above it without allowing another piece. Stackable, lighter cartons may benefit from the high cube’s height. Inspect the arrangement to see which limitation matters for your order.
A geometric comparison does not include freight quotes, equipment availability, drayage or handling costs. First identify a workable plan, then compare the actual quotes for those options. CargoSNX does not calculate freight rates or recommend a booking from price data.
Check why they were left out. A payload limit needs a different response from an oversized package or a lack of usable space. Review dimensions and legitimate handling options, or plan the remaining pieces in another container. Do not remove a restriction simply to make the displayed result fit.
Each row is a separate calculation with one empty container and the same input packlist. “Remaining” means this calculation did not place those pieces; it is not proof of the maximum possible capacity.
| Package | L × W × H (mm) | Quantity | kg / piece | Total m³ |
|---|---|---|---|---|
| Large cartons | 1,000 × 750 × 650 | 80 | 18 | 39 |
| Medium cartons | 800 × 600 × 650 | 40 | 13 | 12.48 |
| Small cartons | 600 × 400 × 650 | 30 | 9 | 4.68 |
| Shipment total | 2,230 kg | 150 | — | 56.16 |
| Container preset | Inside L × W × H (mm) | Placed | Remaining | Volume use |
|---|---|---|---|---|
| 20ft standard | 5,898 × 2,352 × 2,393 | 51 | 99 | 74.9% |
| 40ft standard | 12,032 × 2,352 × 2,393 | 128 | 22 | 76.5% |
| 40ft high cube | 12,032 × 2,352 × 2,697 | 150 | 0 | 73.6% |
More volume use does not mean more of the order loaded. The standard 40ft uses a larger percentage of its interior in this example, but the high cube places all 150 cartons. Read the placed and remaining counts together with the volume percentage.
Preview the example, then choose to load it in the planner.
Millimetres for dimensions. Kilograms per piece. A blank template and the filled example used on this page.
The tables use the CargoSNX container presets. Equipment varies by manufacturer and unit: Hapag-Lloyd’s container specifications describe that variability, and its 40ft high cube reference provides a carrier example. Check the booked container’s internal dimensions, door opening and payload before using a plan.
This example uses rectangular packages and the stated handling rules. It does not simulate cargo securing, packaging strength, equipment access or the full physical loading path, and it does not prove that the calculated arrangement is optimal. Include the relevant operational checks before loading.
Not for a loading calculation. A 40ft gives a continuous interior, while two 20ft containers split the cargo into two spaces with separate payload limits and doors. Compare the actual arrangements instead of doubling a piece count.
CBM is a useful first check. It does not describe the gaps between packages, allowable rotations, non-stackable cargo or whether each package can pass through the door. Those details need a load plan.
It can help when the extra height permits additional supported layers or accommodates a taller package. It may offer little benefit for cargo that cannot be stacked or a shipment that reaches its weight limit first.
Yes. Enter or import the list, set the package rules and calculate for your selected container. Inspect the result, then change the container preset and calculate again with the same cargo.
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