Container loading calculator: how many cartons fit?
Enter one carton size to see how many cartons fit in a 20ft, 40ft, 40ft high cube and 45ft container. The calculator runs in your browser, with no sign-up, and uses the same packing engine as the LoadTrue app.
How the calculation works
The calculator tries many ways of building up rows, columns and layers, including mixing carton directions where that fits more, and keeps the best result. It then caps the count at the container's payload. To see the logic step by step, read how many cartons fit in a container.
Why real loads fit fewer cartons
- Cartons bulge, and pallets, dunnage and airbags take up space.
- Door openings are smaller than the inside of the container, so the last row must still pass through. See container dimensions.
- Weak cartons may not take a full-height stack.
More than one carton size?
This page handles one carton size. For a full packing list with many items, use LoadTrue's loading plan: import your Excel file to get a 3D plan and split the order across containers.