20ft Palletwide High Cube Loading Calculator
Check the 20PWHC profile with actual loaded-pallet outside dimensions. Palletwide internal width is not the door width, and empty-pallet footprints do not describe the complete load.
Test the quantity you enter and review placed and unplaced cargo. This is a planning estimate, not a maximum-capacity guarantee or transport approval.
This 20ft high cube palletwide profile tests your entered loaded-pallet or carton order, not an assumed universal pallet count. Its inside envelope is 589.9 x 241.8 x 269.8 cm, about 38.484 m3. The specific supplier’s 14-Euro-pallet reference uses 800 x 1200 mm footprints; wrapping, overhang, height and handling can change your result.
Open the 20PWHC loading planner. Start with a new job and confirm the selected equipment. This is an initial selection, not an automatic calculation; a saved job or your own equipment choice takes priority.
Planning profile and an equipment supplier example
Seaco lists 14 Euro pallets for this specific model. Treat that as a footprint reference, not a promise for wrapped or overhanging loads. Enter the measured outer footprint and total height, including any pallet base.
| Field | CBM3 11.63.55 profile | Seaco product example |
|---|---|---|
| Interior length x width x height (cm) | 589.9 x 241.8 x 269.8 | 589.9 x 241.8 x 269.8 |
| Door width x height (cm) | 240.4 x 258.5 | 240.4 x 258.5 |
| Cargo payload (kg) | 27,700 | 27,700 |
| Volume (m3) | 38.484 rectangular envelope | 38.4 published nominal value |
The supplier column refers only to the Seaco 20ft High Cube Cellular Palletwide specification. Seaco supplies and leases containers; this is a fleet specification, not a manufacturing certificate. Confirm the equipment actually supplied. Interior volume is not a cargo-fit result; a listed door size is not a simulated loading path.
Why the extra-pallet-at-the-door shortcut fails
Seven rows of two 120 x 80 cm footprints use 560 cm of length and 240 cm of width. In a 589.9 cm-long envelope that leaves 29.9 cm, not another 80 or 120 cm-long position. This arithmetic tests that pattern only, not every possible arrangement.
Reproduce two entered-order examples
Use metric units with palletization off. Keep rotation at Horizontal Only and leave global rules off. Normal loading priority, no delivery stop, no fragile marking and no additional maximum stack-weight limit are used. These are synthetic examples, not measured customer shipments.
| Example | Width x length x height (cm) | Quantity | kg per complete unit | Stackable | This Side Up |
|---|---|---|---|---|---|
| A: cartons | 40 x 60 x 80 | 40 | 25 | Yes | No |
| B: complete floor units | 80 x 120 x 120 | 14 | 400 | No | Yes |
Example B treats each already assembled unit as one box-shaped outer envelope. Its 120 cm height and 400 kg mass already include its base and contents. Do not add pallet height or tare again. This test is manual outer-envelope entry, not evidence of the separate pallet-transfer workflow. Full 3D Rotation and stacking are not permitted for these units.
| Example | Method | Entered | Placed | Unplaced | Containers | Cargo envelope m3 | Known unit mass kg |
|---|---|---|---|---|---|---|---|
| A | Max Volume | 40 | 40 | 0 | 1 | 7.680 | 1,000 |
| A | Best Balance | 40 | 40 | 0 | 1 | 7.680 | 1,000 |
| B | Max Volume | 14 | 14 | 0 | 1 | 16.128 | 5,600 |
| B | Best Balance | 14 | 14 | 0 | 1 | 16.128 | 5,600 |
Engine verification used the installed 11.63.52 Worker in Node, with independent quantity, orientation, boundary, overlap, support and payload checks. It is not a real-browser demonstration, a physical-loading test or a proof of maximum capacity. A different load, restriction or unit can produce a different result.
Review before organizing the physical load
- Measure the complete outer packages, including overhang and wrapping, and confirm the real equipment.
- Check the entered, placed and unplaced quantities for every container. Review the actual order and its handling permissions, not a reference pallet count.
- Assess access, load distribution, stacking suitability and securing with the responsible loading team. The known unit mass in the example excludes the container and any unentered materials; it is not VGM.
The IMO/ILO/UNECE CTU Code is voluntary global packing guidance. A geometric result is not transport approval. Securing choices and applicable requirements need a separate assessment.
Choose the next planning step
Use the step-by-step planning guide to review a job. For the related equipment, see the 20ft dry container loading guide. Return to the loading-space guide directory for other equipment families.
Prepare Complete Loaded-Pallet Inputs
For an already assembled load, enter the widest outside width and length, total loaded height and measured gross unit mass. Include the pallet base and its tare once. Keep Horizontal Only and This Side Up, turn Stackable off unless the complete unit may be stacked, and do not palletize it again. A wooden base dimension is not necessarily the wrapped cargo footprint.
The floor-unit example’s 120 cm total height and 400 kg complete-unit mass give 80 x 120 x 120 x 14 / 1,000,000 = 16.128 m3 and 5,600 kg. Those are cargo-envelope and known-mass totals, not maximum container capacity or VGM. For mixed pallet sizes, use separate rows and review each row’s allocation.
20ft Palletwide Loading Questions
Does every 20ft container fit 14 Euro pallets?
No. The reference belongs to this specific palletwide model, not every 20ft dry container. Confirm the model and measured load envelope. The 14-unit example is one entered order, not a promise for overhanging, inaccessible or unsuitable cargo.
Can the remaining strip hold one extra pallet?
Seven paired rows use 560 cm of length, leaving 29.9 cm in this profile. That strip is shorter than either side of the example’s 80 x 120 cm base. This rejects the extra-position shortcut for that pattern; it is not a proof about all possible mixed arrangements.
Is 269.8 cm the maximum load height I can drive through the door?
No. The listed doorway is lower, at 258.5 cm. Inspect the assigned unit and the complete upright load, lifting equipment and clearance. A static opening check is not a simulated forklift path or confirmation of physical handling.
Should I use CBM or a pallet count to choose the equipment?
Use both as preliminary checks, then test the actual dimensions, quantities and rules. Cartons may stack differently from complete non-stackable pallets. Available volume does not erase a footprint, weight, support or doorway constraint.
Will opening this guide overwrite my saved shipment?
The equipment link supplies a starting selection for a new job and does not calculate automatically. A loaded record or your own equipment selection takes priority. Preserve any shipment before replacing its cargo table with another file or example.
References and Check Dates
Named equipment reference: Seaco, 20ft High Cube Cellular Palletwide, metric specification and 800 x 1200 mm pallet table rechecked 7 October 2026. The current profile is CBM3 11.63.55; source/profile compatibility was checked 7 October. Engine examples retain their original 6 October 11.63.52 date. The IMO/ILO/UNECE CTU Code reference does not turn a geometric plan into transport approval.
Software compatibility note, 8 October 2026 (Europe/Istanbul): The planning profiles and recorded example inputs were checked against the source-reviewed CBM3 11.63.56 candidate. The earlier example execution dates remain unchanged; this compatibility review is not a new optimization run or physical-loading test. Fleet-provider and carrier references are not manufacturer approval. Confirm the actual unit dimensions, payload and securing requirements.
How to inspect and hand over a loading plan
Use the selected plan and the complete shipment data. Recheck the result after changing cargo, equipment or handling rules.
See every cargo unit in context
Search the cargo inventory, focus on an item and switch between realistic, operational, top and side views. Inspect pallet layers and height sections.
The inventory separates requested units, units in the selected container, units in other containers and unplaced units. Select a row to find its cargo in the scene; playback and height sections show only part of the complete plan.
Use pallet details to inspect full, partial and mixed pallets. A height section filters the view; it does not remove cargo from the plan. Vehicle bodies and wheels provide visual context.
Prepare clearer warehouse instructions
Use product colors and short codes, named groups and delivery stops. Choose a summary or warehouse PDF for the selected plan.
Assign product colors and short codes to connect the cargo table, 3D view and reports. Group and stop names improve instructions; apply the appropriate loading rules when a sequence must be enforced.
Compare verified alternatives and review any manual moves. A manual reallocation affects the current preview and PDF; saved or shared inputs recalculate the automatic arrangement when reopened. Export again after changes.
Read the estimated center of gravity
Review longitudinal, lateral and height coordinates from known cargo and pallet masses. Check the displayed origin and units before comparing plans.
The estimate assumes each item's mass is centered and excludes vehicle tare. Missing or stale additional-material records can leave the complete-load assessment unavailable; explicitly declare none when no extra materials are present.
Coordinates use the load-space frame, not road height. For Step Deck, X starts at the raised front end and Y at the lower-deck datum; axle-form distances run from the rear toward the cab.
Distinguish the loading unit from its carrying vehicle
This loading unit alone does not define an axle configuration.
Inspect cargo and pallet weight distribution in this loading space. A container, swap body or air-cargo unit does not identify the road chassis, rail wagon or aircraft carrying it.
Axle estimates are available after selecting a supported complete road or rail vehicle. Enter its actual mounting positions, full empty reactions and applicable limits; do not reuse a trailer reference as container or aircraft approval.