Pallet calculator: how many boxes fit on a pallet?
Enter the box size and your pallet’s height and maximum load height. The calculator gives boxes per layer, layers and total boxes, with no overhang.
How the calculator works
Everything is converted to inches (25.4 mm per inch, exactly). The number of layers is the whole number of box heights that fit between the pallet and the maximum load height: layers = floor((maximum height − pallet height) ÷ vertical box side).
For each layer the tool tries a block of boxes lined up one way and fills the remaining length with boxes turned 90°, for every possible split, on both orientations of the pallet, and keeps the best count. That includes the plain grids. Boxes never overhang the pallet. Total boxes is boxes per layer times layers; floor use is the box footprint times boxes per layer divided by the pallet area.
Boxes per layer and layers are also called Ti and Hi in warehouse paperwork: Ti is boxes in one layer, Hi is the number of layers.
Worked example
A 12 × 12 × 12 in carton on a 48 × 40 in pallet with a 6 in pallet height and a 60 in maximum load height (test inputs, not recommendations): 12 cartons per layer, 4 layers, 48 cartons in total, 54.0 in load height including the pallet.
The table shows the same pallet and limits with other carton sizes. The carton sizes are illustrative, not standard sizes.
| Carton (in) | Per layer | Layers | Total |
|---|---|---|---|
| 12 × 12 × 12 | 12 | 4 | 48 |
| 16 × 12 × 10 | 10 | 5 | 50 |
| 18 × 14 × 12 | 6 | 4 | 24 |
| 20 × 16 × 12 | 6 | 4 | 24 |
| 24 × 18 × 12 | 4 | 4 | 16 |
What to check before you rely on the number
- The maximum load height and weight your carrier, receiver or vehicle allows. The calculator has no built-in limits.
- Whether the receiver accepts overhang, which the calculator does not allow.
- Whether the boxes can be stacked that high without crushing, and whether they can sit on their sides.
- Mixed products, slip sheets, corner boards and wrap are not modelled.
Limits
This is a geometric estimate for identical boxes, not a load plan. A real pattern may be better or worse than the count shown, for instance when a pinwheel arrangement fits one more box. Confirm with whoever receives the freight. For pallet sizes, see the size table; for stacking in vehicles, see pallets per trailer and pallets per container; for what a loaded pallet weighs, see pallet weight.
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