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Auboros

Container Loading Calculator: Pallets & Cartons

A 20-foot general purpose container fits 10 Australian standard 1165 × 1165 mm pallets in the block layout. Carton capacity also depends on stack height, pallet load, container payload and whether goods are floor-loaded. Enter the carton dimensions and weight to compare palletised and loose-carton counts; confirm the actual container dimensions and packaging strength before loading.

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Example values — replace with yours
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Cartons per pallet

48 cartons

Best — cartons per layer
8
Best — layers
6
Best — stack height mm
1,650
Best — gross pallet kg
614
Show breakdown

Calculation breakdown

Pallet — length mm
1,165
Pallet — width mm
1,165
Pallet — height mm
150
Pallet — tare kg
38
Best — orientation
upright
Best — pattern
2 lengthwise columns + rotated strip
Best — cartons per layer
8
Best — layers
6
Best — cartons per pallet
48
Best — stack height mm
1,650
Best — gross pallet kg
614
Best — weight limited
No
Best — footprint utilisation
70.73%
Best — cube utilisation
64.3%
Container — name
20' GP
Container — pallets on floor
10
Container — pallets total
10
Container — cartons palletised
480
Container — cartons floor loaded
981
Container — payload kg
28,200
Container — weight check palletised kg
6,140
Calculation breakdown
Pallet — length mm1,165
Pallet — width mm1,165
Pallet — height mm150
Pallet — tare kg38
Best — orientationupright
Best — pattern2 lengthwise columns + rotated strip
Best — cartons per layer8
Best — layers6
Best — cartons per pallet48
Best — stack height mm1,650
Best — gross pallet kg614
Best — weight limitedNo
Best — footprint utilisation70.73%
Best — cube utilisation64.3%
Container — name20' GP
Container — pallets on floor10
Container — pallets total10
Container — cartons palletised480
Container — cartons floor loaded981
Container — payload kg28,200
Container — weight check palletised kg6,140

Block patterns with no overhang; a pinwheel or interlocked layout may fit more. Confirm packaging strength, vehicle limits and safe loading with your carrier.

8 cartons per layer and 6 layers fit within the entered limits: 48 cartons and 614 kg including the pallet.

PDF for a finished report, Excel for a formatted workbook, CSV for plain data.

Rates as at 7 Sept 2026 · Pallets And Containers · Verification pending

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At a glance

Australian standard pallet
CHEP wooden pallet: 1165 × 1165 × 150 mm, 38 kg tare; editable 1,000 kg load assumption
Note
ISO pallet 1200 × 1000 mm; Euro pallet 1200 × 800 mm
20' GP container internal
5,898 × 2,352 × 2,393 mm, 10 Australian pallets on the floor
40' GP
12,032 × 2,352 × 2,393 mm, 20 Australian pallets; 40' HC is 2,698 mm high
Cartons per pallet
highest-count layer pattern × layers within the height limit, capped by weight
Note
Block and split patterns only; a pinwheel layout can sometimes fit one or two more

How it is calculated

Test upright and permitted rotated block patterns. Apply height and load limits before estimating palletised and loose-carton container capacity.

A: all lengthwise  = floor(PL ÷ CL) × floor(PW ÷ CW)
B: all crosswise   = floor(PL ÷ CW) × floor(PW ÷ CL)
C: split along the pallet length: for k = floor(PL ÷ CL) down to 1,
     block = k × floor(PW ÷ CW);  strip = floor((PL − k × CL) ÷ CW) × floor(PW ÷ CL);  take the max
D: split along the pallet width, symmetric to C
cartons_per_layer = max(A, B, C, D);  pattern name recorded
layers            = floor((max_height − pallet_height) ÷ CH), capped by max_layers
cartons           = per_layer × layers
if carton_kg × cartons > max_load: cartons = floor(max_load ÷ carton_kg); layers = ceil(cartons ÷ per_layer); weight_limited = true
stack_height      = pallet_height + layers × CH
gross_pallet_kg   = tare + cartons × carton_kg
footprint_util    = per_layer × CL × CW ÷ (PL × PW);   cube_util = cartons × CL × CW × CH ÷ (PL × PW × (max_height − pallet_height))
Container: pallets_on_floor = max( floor(L÷PL)×floor(W÷PW), floor(L÷PW)×floor(W÷PL) );  ×2 if double-stack and 2 × stack_height ≤ container height
           cartons_palletised = pallets × cartons_per_pallet;  cartons_floor_loaded = layer_count(container L, W, CL, CW) × floor(H ÷ CH)
           weight check against payload

Tool rates and release history

Why can floor-loading fit more cartons?

Loose cartons can use the space occupied by pallet decks and gaps between pallets. The gain depends on carton dimensions and the permitted orientation. Compare that space saving with manual unloading time, damage risk and the equipment available at both ends of the shipment.

Does the container result include the payload limit?

The estimate checks the entered carton and pallet weights against the selected container preset. Confirm the container’s actual payload plate and the transport limits for the route. A geometric fit alone does not establish a safe or permitted cargo load.

How many cartons fit on an Australian pallet?

Divide the pallet’s length and width by the carton’s, in both orientations, and multiply the whole numbers: on a 1165 mm square pallet a 400 × 300 mm carton gives 2 × 3 = 6 one way and 3 × 2 = 6 the other. Splitting the deck, with two columns of cartons lengthwise and a rotated strip in the remaining 365 mm, fits 8. The calculator tries the block and split patterns for every allowed orientation and reports the highest count with a diagram. Then it counts layers: the usable height (your limit minus the pallet) divided by the carton height, 6 layers of 250 mm under an 1,800 mm limit, for 48 cartons. Finally it checks the weight: 48 cartons at 12 kg is 576 kg, under the entered 1,000 kg load limit, so height is the constraint; at 30 kg a carton the pallet would be weight-limited to 33.

What are the standard pallet and container sizes in Australia?

The Australian standard pallet is 1165 × 1165 mm, unlike the 1200 × 1000 mm ISO pallet used in much of the world and the 1200 × 800 mm Euro pallet, which is why global pallet calculators give the wrong answer here. Container dimensions vary by equipment: the calculator uses a 20-foot general purpose planning preset with an internal floor of about 5,898 × 2,352 mm and a height of 2,393 mm, a 40-foot GP is 12,032 mm long, and a 40-foot high cube adds about 300 mm of height. Ten Australian pallets fit on the floor of a 20-foot container and twenty in a 40-foot; the awkward 1165 mm dimension leaves less wasted width than the ISO pallet’s 1000 mm but the same count.

The CHEP Australian wooden pallet specification supplies the 38 kg tare used in the example. Confirm the actual pallet rating and container plate before loading.

How high can you stack a pallet?

The limit is whichever comes first: your racking bay height (commonly 1,800 to 2,100 mm including the pallet), the carrier’s limit (often 2,200 mm for road freight, and containers at 2,393 or 2,698 mm), the pallet’s certified load limit for the intended racking or floor use (the calculator’s 1,000 kg default is a planning assumption), and the crush strength of the bottom cartons. The calculator takes a height limit and a load limit and applies both; set a maximum number of layers if the cartons cannot bear more than a certain number above them. Stack height and gross weight are shown so you can quote the pallet to a carrier for cubic weight.

Should you palletise or floor-load a container?

Floor-loading cartons uses the container’s volume more fully (the calculator shows 981 loose cartons against 480 palletised for the worked example) and avoids paying to ship pallets, but it costs labour at both ends and slows receiving. Palletised loads are unloaded in minutes with a forklift and go straight into racking. Most Australian wholesalers palletise unless the goods are light and the labour is cheap at origin; the calculator gives both numbers so the freight cost per carton can be compared with the handling cost.

Worked example, 400 × 300 × 250 mm carton, 12 kg, Australian pallet, 1,800 mm limit, 20’ GP container
FigureValue
Pattern2 columns lengthwise + rotated strip (upright)
Cartons per layer8
Layers6
Cartons per pallet48
Stack height1,650 mm
Gross pallet weight (576 kg cartons + 38 kg CHEP tare)614 kg
Footprint utilisation70.7%
Cube utilisation64.3%
Pallets on the floor of a 20’ GP10
Cartons palletised in a 20’ GP480
Cartons floor-loaded in a 20’ GP981
Same carton at 30 kgweight-limited to 33 cartons (5 layers)

Frequently asked questions

Why can floor-loading fit more cartons?

Loose cartons can use the space occupied by pallet decks and gaps between pallets. The gain depends on carton dimensions and the permitted orientation. Compare that space saving with manual unloading time, damage risk and the equipment available at both ends of the shipment.

Does the container result include the payload limit?

The estimate checks the entered carton and pallet weights against the selected container preset. Confirm the container’s actual payload plate and the transport limits for the route. A geometric fit alone does not establish a safe or permitted cargo load.

What size is a standard Australian pallet?

The CHEP Australian wooden pallet is 1165 × 1165 × 150 mm with a published tare of 38 kg. Other pallet designs can have different heights, weights and load limits. It is a square, unlike the rectangular ISO and Euro pallets, so cartons fit the same count in either orientation but a split pattern often does better. Racking, trucks and container floors in Australia are built around it.

How many pallets fit in a 20-foot container?

Ten Australian standard pallets on the floor of a 20-foot general purpose container if they are not double-stacked, and twenty in a 40-foot. ISO and Euro pallets fit differently: the calculator shows the block-pattern count for each, and a pinwheel load can add one or two. It also shows how many loose cartons fit if you floor-load instead.

Carton dimensions, cartons per pallet and pallet weights belong on the product record so receiving, put-away and freight quotes use them. See how in Odoo or MYOB Acumatica.

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