3D container loading calculator
Turn pallet, FIBC or crate data into a disciplined first-pass load plan. The calculator checks floor geometry, stack height, door opening, payload, maximum gross mass and route limits, then renders the result in a rotatable 3D view.
Estimate container capacity before booking
Start with the loaded dimensions and gross mass of one cargo unit. Next, choose a 20 ft, 40 ft or 40 ft high-cube reference container, or enter the booked equipment data. The result shows a reproducible floor layout, supported tiers, weight-limited capacity and the number of containers required.
Interactive 3D load view
Drag to rotate. Scroll or pinch to zoom.
Container comparison
Uses the current cargo, stacking and allowance inputs with the three reference equipment presets.
| Container | Floor | Geometry | Weight | Capacity | Containers | Limit |
|---|
How the plan is calculated
The engine tests lengthwise, crosswise and mixed strip layouts when rotation is allowed. It then compares the best repeatable arrangement with height, door and mass limits.
Before loading
- Confirm the data printed on the booked container.
- Review pallet runners, point loads and forklift access.
- Finally, document dunnage, securing and the approved stacking method.
Gross mass notice
The displayed gross mass combines the entered tare, cargo and securing allowance. However, it remains a planning figure and is not a SOLAS verified gross mass.
From cargo data to a usable first-pass plan
First, the calculator deducts the entered wall clearance from the internal floor area. It then tests repeatable lengthwise, crosswise and mixed orientations. Finally, the engine applies tier height, door clearance, payload, maximum gross mass and any route cargo limit.
- Choose a reference container or enter the booked unit dimensions.
- Record the maximum loaded length, width, height and gross mass of one cargo unit.
- Set the shipment quantity, approved tiers, practical gaps and securing allowance.
- Compare geometry, weight and final-container balance before fixing the booking.
Because the model favours repeatable layouts, it is useful for procurement, booking and loading preparation. However, irregular packing, overhangs and special dunnage still need a shipment-specific review.
Read the limiting factor, not only the unit count
A high geometric count does not always produce a usable load. For example, payload may become the binding limit before every floor position is filled. Conversely, a light cargo may be constrained by door clearance, tier height or usable floor space.
Therefore, the planning capacity should be read together with the stated limiting factor. Before booking, compare that figure with the shipment quantity and the balance in the final container.
Reference dimensions are a starting point
The presets support early comparison between common dry-container types. Nevertheless, internal dimensions and payload markings can vary by manufacturer, owner and equipment number. Use the custom option once the booked container data is available.
| Container | Inside length | Inside width | Inside height | Door width | Door height |
|---|---|---|---|---|---|
| 20 ft dry | 5,898 mm | 2,352 mm | 2,393 mm | 2,340 mm | 2,280 mm |
| 40 ft dry | 12,032 mm | 2,352 mm | 2,393 mm | 2,340 mm | 2,280 mm |
| 40 ft high cube | 12,032 mm | 2,352 mm | 2,698 mm | 2,340 mm | 2,585 mm |
In practice, door fittings, floor condition and internal protrusions can reduce usable space. Keep a practical clearance rather than loading to a theoretical edge.
Convert the estimate into a loadable shipment
Once the calculation looks workable, move from arithmetic to execution. The following checks protect the plan from common loading-day surprises.
- Match pallet entry direction to the forklift and container door.
- Confirm that each cargo unit can support the approved number of tiers.
- Allow for dunnage, lashing, anti-slip material and inspection access.
- Review point loads, axle limits and route restrictions with the responsible parties.
- Inspect the empty container for damage, odour, moisture and floor condition.
- Photograph the load pattern and record the final seal number.
Moreover, moisture-sensitive cargo needs a dry container, suitable packaging and route-specific condensation controls. These operational checks sit outside the calculator, yet they determine whether the plan can be executed safely.
Container loading questions from procurement teams
How many pallets fit in a 20 ft or 40 ft container?
There is no reliable universal count because pallet size, loaded height, mass, clearance and rotation all matter. Therefore, enter the actual loaded unit data and confirm the booked container dimensions.
Can the calculator be used for FIBCs, bulk bags and crates?
Yes. Treat each loaded pallet, FIBC, bag or crate as one cargo unit. Then, enter its maximum loaded dimensions and gross mass.
Does the tool find every possible packing arrangement?
No. It tests reproducible lengthwise, crosswise and mixed strip layouts. However, irregular arrangements, overhangs and special supports require a separate engineering or loading review.
Why can weight limit the load before the container looks full?
Payload, maximum gross mass or a route-specific cargo limit may be reached first. As a result, unused geometric space can remain even when the legal or operational mass limit has been met.
Why might the booked container fit fewer units than the preset?
Actual equipment can differ in internal dimensions, door opening, floor features and payload marking. In addition, practical loading clearances reduce the space available to cargo.
Is the displayed gross mass a SOLAS verified gross mass?
No. The displayed figure is a planning calculation based on the entered tare, cargo and securing allowance. Use an accepted verified gross mass method for shipment documentation.
Related logistics and procurement resources
A container plan is stronger when packaging, documents, trade terms and route risks are reviewed together. Accordingly, the following AHR resources extend the calculation into the wider shipment file.