How Many Cartons Fit in a 20ft Container? The FMCG Loading Guide (2026)
A 20ft container is rated at about 33 cubic metres and a maximum payload around 28 tonnes (Freightos, shipping container dimensions). Neither number is the one you’ll actually load. Between stuffing gaps, pallet choices and road weight limits, the real answer to “how many cartons fit?” is always smaller — and for some products, it’s the scale, not the tape measure, that decides.
We load mixed FMCG containers out of Ho Chi Minh City every week, so this guide answers the question the way a loading sheet does: what the container really holds, which limit bites first for which products, how to calculate your own carton count in three steps, and the real numbers from our warehouse practice. It’s the technical backbone behind the one-container MOQ in our Vietnam FMCG import guide.
Key Takeaways
- A 20ft container is rated ~33 CBM, but floor-loaded FMCG cartons realistically use 25–28 CBM (Freightos / DSV specs).
- Every product hits one of two limits first: volume (light, bulky goods like noodles) or weight (dense goods such as canned food and condensed milk). Canned drinks sit between the two — volume-limited in a 20ft, weight-limited in a 40ft.
- Your number = the smaller of two counts: usable CBM ÷ carton CBM, and allowed payload ÷ carton weight.
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How Much Does a 20ft Container Actually Hold?
On paper: roughly 5.9m long, 2.35m wide, 2.39m high inside — about 33 CBM of volume, with a rated maximum payload around 28 tonnes (Freightos, container dimensions guide). In practice, plan on 25–28 CBM of usable space for floor-loaded cartons, and less on pallets.
Where does the missing volume go? Cartons don’t tile a container perfectly — you lose slices at the walls, the door end, and every layer where carton heights don’t divide the interior height evenly. Mixed loads lose a little more, because different carton sizes stack imperfectly against each other. A clean single-SKU load of well-sized cartons gets closest to the ceiling; a 20-SKU mixed load sits nearer 25 CBM.
And the payload number deserves its own asterisk: 28 tonnes is what the container is rated for, not what the road allows. Many destinations cap legal cargo weight for a 20ft box well below the rating once truck and chassis weights are counted. Your forwarder knows the ceiling for your corridor — and a serious quotation already reflects it.
The Two Limits: Volume vs Weight — Which One Bites First?
Every product category runs out of one resource before the other, and knowing which is the fastest way to sanity-check any loading plan. Light, bulky goods fill the space with tonnes to spare; dense goods hit the scale while daylight still shows above the stack.
| Category | Limit that bites first | Why |
|---|---|---|
| Energy drinks & beverages | Depends on the box | ~662 kg/CBM — a 20ft fills by volume at ~21.8 t; a 40ft hits its payload at ~59% full |
| Canned food, sauces, condensed milk | Weight | Dense products in glass and metal |
| Powder detergent | Roughly even | Dense but boxed with air — the closest race of the categories |
| Toothpaste, personal care | Volume | Mid-weight cartons; space usually runs out first |
| Instant noodles, snacks | Volume | Mostly air by weight — the container fills at a fraction of the payload |
This single table explains most of the loading decisions in this trade. For beverages we have published the actual packing-list numbers — 8.50 kg and 0.0129 CBM per carton — in our bulk soft drinks guide. It’s why energy drinks ship as dedicated containers — covered in our Red Bull wholesale guide — and why the smartest mixed containers pair heavy categories with light ones: detergent and noodles share a box beautifully, because one spends the weight budget while the other spends the space.
How Do You Calculate Carton Count? The 3-Step Method
You need three numbers per SKU: carton dimensions, carton gross weight, and your destination’s allowed cargo weight. Then the math takes one minute.
A worked example, with round illustration numbers: a carton measuring 40 × 30 × 25cm is 0.03 CBM. At 27 usable CBM, volume allows 900 cartons. If that carton weighs 12kg and your corridor allows 21 tonnes of cargo, weight allows 1,750. The smaller number wins: 900 cartons, volume-bound — typical for personal care. Run the same math on a 9kg beverage carton of 0.014 CBM and the two counts converge — which is exactly why drinks loads are planned from the scale, not the tape measure.
Online container calculators do step 2 well and step 3 poorly — most default to the rated payload, not your road limit. Use them for volume, then apply your forwarder’s weight ceiling by hand.
Real Loading Numbers from Our Warehouse
Some real figures from our packing practice, the kind that rarely make it into freight-site articles. Beverage cartons in the 320ml can format stack at 130 cartons per pallet in our export configuration — the same figure across Sting, Schweppes and Monster lines, because the can format drives the carton, and the carton drives the pallet. In grocery categories, 48 units per carton is the recurring standard: toothpaste, condensed milk, seasoning and rice noodles all commonly case at 48s.
The pallet question itself is a trade-off. A 20ft container floor-loads more cartons, but palletised cargo — ten to eleven pallets in a 20ft box (iContainers, pallets per container) — unloads in minutes instead of hours and suffers less handling damage. Buyers with forklifts and docks usually take the ~10% volume haircut; buyers unloading by hand at a market warehouse usually want every carton the box can hold.
And the rule our loading team applies to every mixed container: heavy cartons low, light cases on top. Detergent and canned goods build the floor layers; snacks and noodles ride above. It protects the light cargo and keeps the container’s centre of gravity where the truck wants it.
20ft vs 40ft vs 40HC: When Does Upsizing Pay?
Here’s the counterintuitive part: a 40ft container carries roughly double the volume of a 20ft — about 67 CBM rated — but its maximum payload is in the same band, not double (DSV, container dimensions). You buy twice the space and almost none of the extra weight allowance.
| 20ft | 40ft | 40ft High Cube | |
|---|---|---|---|
| Rated volume | ~33 CBM | ~67 CBM | ~76 CBM |
| Rated payload | ~28t | similar band | similar band |
| Best for | Dense cargo; first mixed orders | Light, bulky cargo at volume | The bulkiest: snacks, paper, instant noodles |
So the upsizing rule writes itself. For weight-bound cargo like beverages, a 40ft rarely helps — you’d hit the same weight ceiling with half the box empty. For volume-bound cargo like noodles and snacks, a 40ft or 40HC nearly halves the freight cost per carton, because you double the cartons against one sailing. That’s why our beverage quotes default to 20ft and our snack-heavy quotes ask about your appetite for a 40HC.
What This Means for Your First Mixed Container
The commercial takeaway sits on top of the physics. A first mixed container — typically 15–25 SKUs across two or three categories — works best when it pairs weight-spenders with space-spenders: drinks or detergent below, noodles and snacks above, personal care in between. You use more of both budgets, and you test more of the market per freight dollar.
Payment and paperwork don’t change with the loading plan: 50% deposit against proforma invoice, balance before shipment — the full flow is in our payment terms guide — and destination-specific rules are covered in our market guides for India and the UAE. What changes is the quotation: ours states the exact carton count per SKU for your configuration and corridor, so the number you plan revenue on is the number that ships.
Send your product list — or just the categories you’re weighing — and we’ll return a USD quotation within 24 hours on working days, carton counts included: request a wholesale quotation →
Frequently Asked Questions
How much can a 20ft container hold?
About 33 CBM rated, 25–28 CBM usable for floor-loaded cartons, with a rated payload around 28 tonnes — though road limits at many destinations allow less cargo weight in practice. Carton count depends on your product: from several hundred for dense goods to well over a thousand for light ones.
What is the maximum load for a 20ft and 40ft container?
Both sit in a similar payload band — roughly 28 tonnes rated. The 40ft doubles the volume, not the weight allowance, which is why upsizing only pays for light, bulky cargo.
How do you calculate how many cartons fit in a container?
Three steps: carton CBM = length × width × height; volume count = usable CBM (25–28 for a 20ft) ÷ carton CBM; weight count = allowed payload ÷ carton gross weight. Your real count is the smaller of the two.
How many pallets fit in a 20ft container?
Ten standard pallets or eleven europallets in a single tier (iContainers). Palletising costs roughly a tenth of the volume versus floor-loading, in exchange for much faster unloading and less handling damage.
What is the difference between a 20ft and 40ft container?
Double the volume, similar weight allowance. Dense cargo like beverages gains little from a 40ft; light cargo like noodles and snacks nearly halves its freight cost per carton by upsizing.
Sources
- Freightos, Shipping Container Dimensions: 20ft and 40ft Specs & Weight, retrieved 2026-07-20, https://www.freightos.com/freight-resources/shipping-container-dimensions/
- DSV, Shipping container dimensions, retrieved 2026-07-20, https://www.dsv.com/en/our-solutions/modes-of-transport/sea-freight/shipping-container-dimensions
- iContainers, How many pallets fit in a 20ft or 40ft container, retrieved 2026-07-20, https://www.icontainers.com/help/how-many-pallets-fit-in-a-container/
