Pallet Calculator Widget

Add a palletisation calculator to a packaging, 3PL or wholesale page. Shippers choose a EUR/EPAL, ISO or 48 x 40 in GMA pallet, set the height and weight limits and their carton size, and see how many boxes fit per layer and per pallet with the loaded height and gross weight.

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<iframe src="https://a2z.tools/embed/w/pallet-calculator" title="Pallet Calculator by A2Z Tools" width="100%" height="1000" style="border:0;width:100%" loading="lazy" allow="clipboard-write"></iframe>

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How it works

Every carton stands upright, and the widget tries the two ways it can sit on the deck: its length along the pallet length, or turned 90 degrees. Each count is floor(pallet length / box side) x floor(pallet width / other side), so nothing overhangs, and the larger of the two becomes the layer pattern. Layers are the whole box heights that fit between the deck and the height limit, which includes the pallet itself. The weight cap is the maximum gross weight minus the pallet's own weight, divided by one carton's weight; the smaller of the height count and the weight count wins, and the card says which one limited the load. Presets cover the EUR/EPAL 1200 x 800 mm pallet, the ISO 1200 x 1000 mm pallet and the North American 48 x 40 in GMA pallet. A 60 x 40 x 30 cm carton gives 4 per layer on a Euro pallet.

Calculation method

  • Per layer = max( floor(PL / bl) x floor(PW / bw), floor(PL / bw) x floor(PW / bl) ) - no overhang
  • Layers = floor((max height - pallet height) / box height)
  • By weight = floor((max gross weight - pallet weight) / box weight)
  • Boxes per pallet = min(per layer x layers, by weight)
  • Loaded height = pallet height + ceil(boxes / per layer) x box height; gross weight = pallet weight + boxes x box weight
  • Footprints: EUR/EPAL 1200 x 800 mm; ISO 1200 x 1000 mm; GMA 48 x 40 in = 1219.2 x 1016 mm

Worked examples

Euro pallet, 60 x 40 cm cartons

Inputs: EUR 120 x 80, pallet 14.4 cm and 25 kg; limits 160 cm and 1,000 kg; box 60 x 40 x 30 cm, 20 kg

Result: 16 boxes: 4 per layer x 4 layers; height 134.4 cm; gross 345 kg

Height is the limiting factor.

GMA pallet, US cartons

Inputs: 48 x 40 in, pallet 6 in and 45 lb; limits 60 in and 2,000 lb; box 16 x 12 x 10 in, 40 lb

Result: 45 boxes: 9 per layer x 5 layers; height 56 in; gross 1,845 lb

Nine 16 x 12 in cartons use 90% of the deck.

Limitations

  • Column stacking with one orientation per layer only; interlocked, pinwheel or mixed patterns are not optimised.
  • Does not check carton compression strength or whether the stack is stable without wrap or corner boards.
  • Pallet heights and weights vary by manufacturer and condition; enter the values for your pallets.

Where publishers use it

  • A contract packer's page showing customers how their carton size palletises
  • Amazon FBA and retail-DC prep guides with pallet height limits
  • Wholesale order forms quoting cases per pallet
  • Warehouse racking articles relating beam height to pallet load height
  • Packaging designers testing which carton footprint uses a Euro pallet best

Questions

How many 60 x 40 x 30 cm boxes fit on a Euro pallet?

Four per layer (2 x 2 on the 120 x 80 cm deck, a perfect fit). With a 160 cm height limit and a 14.4 cm pallet, 4 layers fit, so 16 boxes at 134.4 cm loaded height.

Does the maximum height include the pallet?

Yes. Enter the limit for the finished load, for example a racking or trailer limit of 180 cm, and the pallet height separately; the widget subtracts it before counting layers.

Why does it only try two orientations?

Cartons normally must stay this way up, so only rotating the footprint 90 degrees is allowed. Laying boxes on their side, interlocking patterns and mixed layers can fit more and are not modelled.

What happens when the weight limit is reached first?

The box count is cut to what the weight allows and the top layer may be partly filled; the result says 'limited by weight' and shows how many boxes are in the last layer.

What size is a GMA pallet?

48 x 40 in (1219 x 1016 mm), the common grocery pallet in North America. 16 x 12 in cartons fit 9 per layer on it, using 90% of the deck.

Can I allow overhang?

No, the widget never lets cartons overhang, because overhanging cases lose stacking strength. To test a planned overhang, enter a custom pallet size that includes it.

Sources

  1. EPAL Euro Pallet - European Pallet Association e.V. (EPAL) . Length 800 mm x width 1,200 mm x height 144 mm, weight approx. 25 kg, safe working load 1,500 kg - the EUR preset and the default pallet height and weight. Checked 2026-10-01.
  2. ISO 6780:2003 Flat pallets for intercontinental materials handling - Principal dimensions and tolerances - International Organization for Standardization . The international flat-pallet dimension standard behind the 1200 x 1000 mm preset. Its public page shows the scope only, not the size table, so that size could not be confirmed there; reviewed and confirmed by ISO in 2026.
  3. Investigation of new and recovered wood shipping platforms in the United States (Gerber et al., 2020) - USDA Forest Service, Research and Development . 48 x 40 in pallets 'continues to be the dominant standardized pallet size' in the US - the GMA preset.

Cite or recommend this tool

If you reference this tool in an article, course or documentation, these formats are ready to copy. They are optional - nothing is added to your site unless you paste it.

A2Z Tools Pallet Calculator
https://a2z.tools/embed/pallet-calculator
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