Carton Volume, Volumetric Weight and Pallet Fit Calculator
Volumetric weight on any divisor, the weight you will actually be charged for, and how many cartons fit the pallet.
Calculator
From carton dimensions to volumetric weight, the weight you will actually be charged for, and how many cartons fit a pallet.
Result
The calculation runs entirely in your browser; nothing you type is sent to our servers. Only if you press “Turn this into a quote request” is the result written to your browser’s session storage, so it can be carried into the quote form.
Worked example
Opened with its default case — Carton width (cm): 40 · Carton length (cm): 30 · Carton height (cm): 30 — the calculator returns the figures below. They are written out here so the output is readable without running JavaScript: in print, with scripts disabled, or by a search engine.
| Input | Value |
|---|---|
| Carton width (cm) | 40 |
| Carton length (cm) | 30 |
| Carton height (cm) | 30 |
| Actual weight (kg) | 5 |
| Volumetric divisor | 5000 — international courier (DHL / UPS / FedEx) |
| Pallet width (cm) | 120 |
| Pallet length (cm) | 80 |
| Stackable height (cm) | 160 |
| Result | Value |
|---|---|
| Carton volume | 36 dm³ (36,000 cm³) |
| Volumetric weight | 7.20 volumetric kg |
| Chargeable weight | 7.5 (volume governs) |
| Fits on the pallet footprint | 8 per layer (5 layers) |
| Total per pallet | 40 cartons / pallet |
Change any field above and the calculator recomputes; this table is the default case only.
How is volumetric weight calculated?
Volumetric weight = length × width × height (cm) ÷ divisor, and the divisor is set by the carrier: 5000 for most international couriers, 6000 for IATA air freight, and 3000 or 4000 in some domestic contracts. You are charged on whichever is greater, the volumetric weight or the actual weight. A 40 × 30 × 30 cm carton is 36,000 cm³, which is 7.2 kg at a divisor of 5000 and 12 kg at 3000 — so the same box costs two-thirds more on the tighter divisor while nothing about the box has changed. That is why the divisor belongs in the rate comparison, not just the price per kilo.
The divisor moves the price
| Divisor | Where it applies | Volumetric weight of a 40×30×30 carton |
|---|---|---|
| 3000 | Common with domestic carriers in Türkiye | 12.0 |
| 4000 | Some domestic logistics contracts | 9.0 |
| 5000 | International courier (express) services | 7.2 |
| 6000 | IATA air freight default | 6.0 |
A rate that looks 20% cheaper per kilo on a divisor of 3000 is more expensive than the alternative at 5000 for any low-density shipment. Always compare offers on the chargeable weight the calculator returns, not on the rate card alone.
The units differ by market too. In Türkiye the figure is spoken of as desi and treated as a unit in its own right; internationally the same number is a volumetric or dimensional weight in kilograms. The arithmetic is identical — only the name and the customary divisor change.
Rounding: where the small money goes
How a carrier rounds is part of its tariff. Yurtiçi Kargo in Türkiye, for example, rounds to the nearest whole unit — below 0.50 down, 0.50 and above up, so 12.3 becomes 12 — while DHL Express rounds up to the next half kilo up to 30 kg and to the next whole kilo above that. Either way the rounding is applied to the chargeable weight, the greater of volumetric and actual. On a single consignment the difference is trivial; across a few thousand parcels a year it is not, and it is invisible unless you calculate it. The calculator applies those two published rules — nearest whole unit for the 3000 and 4000 divisors, the DHL steps for 5000, and 0.5 kg steps for the IATA 6000 divisor, which you should confirm with your carrier — and shows both the raw and the rounded figure.
Where rounding, handling charges and surcharges are applied per package, splitting one 12 kg carton into two 6 kg cartons does not halve anything — it doubles the number of times they are applied. Check how your tariff counts packages before splitting a consignment.
Dimensions are measured, not declared
Carriers can measure parcels at the hub, so the dimensions on the waybill are a declaration that may be checked. Three things routinely make the measured figure larger than the calculated one: bulge in an over-filled carton, which is measured at its widest point; protruding straps, handles or corner protectors; and irregular shapes, which are measured on the smallest cuboid that contains them. An adjustment after collection is harder to dispute than getting the carton right.
The practical response is to size the carton to the goods rather than using one large box with void fill, and to keep the pack square. Both reduce the measured volume and improve stacking at the same time.
Fitting the pallet footprint
Chargeable weight decides the courier cost; the pallet footprint decides the freight cost. The calculator tries the carton in both orientations on the pallet and reports the better one, then the number of layers the stackable height allows.
| Pallet | Footprint (mm) | Typical use |
|---|---|---|
| EUR / EPAL | 1200 × 800 | European road freight |
| Industrial | 1200 × 1000 | Sea freight, heavier loads |
| North American | 1219 × 1016 (48 × 40 in) | North America |
| Half pallet | 800 × 600 | Retail display, small consignments |
Footprint utilisation is the figure to watch: a carton that leaves 20% of the pallet base empty carries that emptiness through every layer and into the freight invoice. A small change in carton dimensions can recover a whole column.
Two constraints the geometry does not capture. Overhang: cartons projecting past the pallet edge lose most of their compression strength and can bring a load down. Stacking strength: the bottom layer carries everything above it, and board grade — not just carton size — sets how many layers are safe. If the load is to be double-stacked in a container or a trailer, the bottom carton must be specified for it.
Reducing chargeable weight
- Size the carton to the goods. A direct saving, and an easy one to skip because a standard box is already in the store.
- Consolidate rather than split. Where rounding, handling and surcharges apply per parcel, fewer parcels mean fewer charges.
- Replace loose void fill with a fitted insert. Void fill lets you use an oversized box; a fitted insert lets you use a smaller one.
- Check the divisor before the rate. On low-density goods the divisor moves the invoice more than the price per kilo does.
- Flat-pack whatever can be flat-packed. Volume is three-dimensional: removing 5 cm of height from a 40 × 30 carton removes 6,000 cm³, which is 1.2 kg of chargeable weight at 5000.
What to send us for a quote
Send the calculator output with the goods and the monthly volume. We quote cartons in the size you actually need — including made-to-measure runs where a standard size wastes space — along with tape, void fill, corner boards, strapping and labels, on one invoice. If the pallet fit is the binding constraint, tell us the pallet you ship on and we will size the carton to it rather than the other way round.
Frequently Asked Questions
What is the difference between volumetric weight and desi?
None, mathematically. Both divide the carton volume in cubic centimetres by a divisor. The Turkish market calls the result desi and commonly uses a divisor of 3000; international couriers call it volumetric or dimensional weight and commonly use 5000, with 6000 for IATA air freight.
Which divisor applies to my shipment?
Whichever your contract states — it varies by carrier and by service level within the same carrier. Check the tariff rather than assuming, because the divisor changes the chargeable weight by up to a factor of two on the same box.
Am I charged on actual or volumetric weight?
On whichever is greater. Dense goods are charged on actual weight and light bulky goods on volumetric weight; the calculator shows which one governs for your carton.
Does splitting a shipment into smaller boxes cost less?
Often not. Where rounding, handling and surcharges are applied to each parcel, two half-full boxes can cost more than one full one. Check how your tariff counts packages, and consolidate where the weight limit allows.
Why was I billed for more than I calculated?
A common reason is measured dimensions: carriers can measure at the widest point, so a bulging carton, protruding strapping or an irregular shape all measure larger than the flat carton dimensions. Size the box to the goods and keep the pack square.
Can you supply cartons in a non-standard size?
Yes — a made-to-measure run can be worth it when a standard size wastes either chargeable weight or pallet footprint. Send the goods dimensions and the monthly volume and we will quote both the standard and the fitted option so the saving is visible.
Sources
- Yurtiçi Kargo — how the price is calculated (desi = dm³ ÷ 3, rounding of fractions)
- DHL Express tariff guide 2026 — 0.5 kg steps up to 30 kg, 1 kg above
How we choose sources, verify figures and date our pages is set out in how we source and verify what we publish. Spotted an error? Write to info@aksco.com.tr — verified errors are corrected.
Related guides
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