Pallets in a Container Calculator

Floor-loaded, one tier: a 20 ft container takes 11 EUR or 10 US pallets; a 40 ft (standard or high cube) takes 25 EUR or 21 US. Details and loading patterns: pallets in a 20 ft and pallets in a 40 ft.

The calculator is geometric — it does not check weight. Verify your total against container payload and local road limits.

A container floor is a rectangle and a pallet is a smaller rectangle, so the question is how many of the small ones tile the big one. The calculator does not assume a single orientation: it lays pallets in bands along the container length, tries each band both ways round — long side along the length (straight) and long side across the width (turned) — and keeps whichever combination yields the highest count.

That matters because the two orientations pack differently against a fixed 2,352 mm internal width. An EUR pallet turned across the width takes 1,200 mm, so one fits with 1,152 mm to spare; laid straight it takes 800 mm, so two fit side by side with 752 mm left. Neither wastes the same amount, and the winning pattern is usually a mix of both — a run of straight bands plus a turned tail row at the door end.

The top view under the result shows the winning arrangement to scale, so you can hand it to whoever is doing the stuffing rather than describing it.

Once the floor count is set, the total is simply floor count × tiers, and tiers is the internal height divided by your loaded pallet height, rounded down. This is where container choice quietly doubles or halves a shipment, because the standard and high-cube heights straddle common load heights.

Read the 1.2 m column twice: a standard 40 ft gives one tier, a 40 ft high cube gives two. The extra foot of height is worth a second layer exactly in the band where most palletised consumer goods land, which is why high cubes dominate the trade despite costing more to hire.

At 1.5 m loaded height nothing stacks in either box, and the sensible move is to reduce the load height rather than pay for a container that ships air.

The calculator answers a geometry question and stops there. A 40 ft container geometrically accepts 25 EUR pallets in one tier and 50 in two, but its payload is about 28,800 kg — so two tiers only work if each loaded pallet stays under roughly 576 kg. Heavy goods hit the weight ceiling long before the roof.

The practical check is a division, not a diagram: payload ÷ number of pallets = the maximum average weight per pallet. If your pallets weigh more than that, the container is full when the scale says so, however much space is left. Figures per size are in the container weight guide.

Road limits then cut it again in many countries — a container that is legal at sea can be over the axle limit on the drayage leg, which is why 20 ft boxes are often loaded to well under their theoretical payload.

The EUR pallet is 1,200 × 800 mm; the US GMA pallet is 48 × 40 in, or 1,219 × 1,016 mm. The GMA is 2 % longer and 27 % wider, and that width is what costs you places: two GMA pallets side by side across a 2,352 mm interior need 2,032 mm and leave 320 mm — not enough for a third row in any orientation, while the narrower EUR pallet keeps the turned-row option alive.

The result is that GMA counts fall further than the footprint difference suggests: 10 in a 20 ft and 21 in a 40 ft, against 11 and 25 EUR. Reaching even those takes more than straight rows. Two turned GMA pallets cannot stand side by side — 2 × 1,219 = 2,438 mm against 2,352 mm of width — so the pattern that works staggers them: each lane turns its pallets at the opposite end from the other, and every turned pallet stands beside a straight one. The calculator searches that staggered pattern along with the straight bands, and its diagram shows which one won.

If you are choosing pallet standards for an export lane rather than working with what you have, the EUR footprint is simply better suited to ISO container geometry — see the pallet sizes guide for the full set.

Pallets cost space: an EUR pallet is itself 144 mm (5.7 in) of height that carries no cargo, and the gaps between pallet edges and the container walls are dead volume. In a 40 ft or 40 ft high cube, 25 EUR pallets cover 24.0 m² of the 28.3 m² floor, so 15 % of the floor carries no pallet in any tier, before the pallets take their own height out of each one.

Floor-loading wins when cartons are uniform, the destination has labour to unload by hand, and the cargo is light enough that volume — not weight — is the binding constraint. Palletising wins when the receiver runs forklifts, when transit involves multiple handovers, or when the cargo cannot take the compression of a hand-stacked wall.

The honest comparison is cost per delivered unit, not pallets per container: the cube that floor-loading gains is worth little if it costs hours of extra handling at the door.