How Many Glass Jars Fit in a 20ft or 40ft Container?

By Daystar Glassware Engineering Team · October 29, 2026 · 9 min read

A 20ft container holds roughly 19,000–128,000 glass candle jars depending on jar capacity (95–730 ml in our packing data), and a 40ft high-cube holds roughly 44,500–277,000. For the most common candle jar sizes — 220–430 ml — plan on about 31,500–64,000 jars per 20ft and 61,000–139,000 per 40ft high-cube.

That is the short answer. The full answer matters more, because the number is not fixed: it depends on carton dimensions, egg-crate dividers, wall thickness, palletising, and — for smaller jars — the weight limit of the container rather than its volume. Buyers who assume a single “jars per container” figure routinely over-order by a full pallet or under-order by a week of production.

This article uses real packing data from our own packing line: nine candle jar formats from 95 ml to 730 ml, with actual jars-per-carton, carton dimensions and gross weights. We also show the calculation method so you can estimate any jar size yourself, and flag the details that most generic freight guides miss.

How many glass jars fit in a container: quick answer

A 20ft container holds between roughly 19,000 and 128,000 glass candle jars across our nine current formats, and a 40ft high-cube holds between roughly 44,500 and 277,000. The spread is entirely driven by jar size: a 95 ml votive packs about six times denser than a 730 ml low-bowl vessel.

In short:

• 20ft container: 19,000–128,000 jars for 95–730 ml candle jars, at about 800 cartons and 28 cbm of usable loading volume.
• 40ft high-cube: 44,500–277,000 jars at about 65 cbm usable — but for 6 of our 9 formats the weight limit, not the space, sets the final number.
• Common candle sizes (220–430 ml): about 31,500–64,000 jars per 20ft and 61,000–139,000 per 40ft high-cube.
• Standard packing: egg-crate dividers inside 3-ply export cartons (5-ply for heavy-wall formats), 24–160 jars per carton.
• Palletising: expect 10–15% fewer jars if you require palletised loading for warehouse handling.
• Mixed designs: 2–4 designs can share one container; the 3,000 pcs per design minimum still applies to each.

Container basics: 20ft vs 40ft high-cube

Two container types cover nearly all glass packaging orders. The numbers below are the planning figures we use — interior capacity reduced to a realistic loading volume, because a rectangular container and rectangular cartons never achieve 100% theoretical fill.

The row that surprises most buyers is the payload. A 40ft high-cube carries less weight than a 20ft by spec — it simply carries more volume. With glass, which is dense, that difference decides how full the container can actually be. Where container choices fit into the wider buying decision — MOQ, lead time, landed cost — is covered step by step in our wholesale & bulk glass packaging guide.

How glass jars are packed for containers

Before any maths, you need to know what a carton looks like, because the carton — not the jar — is the unit that loads a container:

• Egg-crate dividers. Jars stand upright in a corrugated grid that separates each piece. The divider prevents rim-to-rim contact, which is the main cause of chip damage in transit. It also fixes the jars at a packing density that cannot be improved by nesting.
• 3-ply export cartons are standard for most formats. 5-ply double-wall cartons are used for heavy-wall jars and other dense formats where stacking pressure in the container is higher.
• Cartons per layer. Cartons are floor-loaded base-down, in a pattern calculated per carton size, then stacked to the container roof with loading-height limits respected.
• Gross weight. Each carton’s gross weight (glass + divider + carton) is what checks against the container payload — this is the number freight forwarders book against.

The calculation chain is therefore: jars per carton → cartons per container → weight check → final count. The volume step uses usable volume (about 85% of interior capacity for floor-loaded cartons); the weight step uses the container payload. Whichever binds first wins.

Real packing data: nine candle jar formats

This is current packing-line data for our stock candle jar formats — actual carton quantities, carton dimensions and gross weights, including the egg-crate divider. All nine are current stock designs; browse the full range in our candle jars collection. Capacity is full water capacity; our candle jar size guide explains how that converts to wax fill.

Figures are rounded. Two details worth noticing: the heavy-wall 370 ml format takes a 5-ply carton and only 24 jars per carton — wall thickness (a parameter that can be adjusted within limits through our customisation service), not capacity, is what drives its packing density. And carton heights vary widely between formats, which is why two “similar” jars can differ by thousands of pieces per container. For larger multi-wick formats beyond this table, see our large candle vessels range.

Jars per 20ft and 40ft container: the loading table

Applying the method above — usable volume first, payload check second — our nine formats load as follows. Quantities are whole cartons, rounded, and assume loose floor-loaded cartons (not palletised).

Exact carton counts depend on the final carton spec and the loading pattern at booking — treat these as planning quantities. Send us your jar, quantity and destination and we will return a loading plan with the booking: browse the product catalogue or contact us for a quotation to start.

Why small jars hit the weight limit before the space limit

This is the detail most “jars per container” answers online get wrong. Glass is dense: a carton of 95 ml votives weighs 15 kg for 0.035 cbm — about 430 kg per cbm. At that density, a 40ft high-cube reaches its ~26,000 kg payload before it reaches its 65 cbm of usable space.

In our data, 6 of the 9 formats are weight-limited in a 40ft high-cube. The 95 ml format, for example, would fill about 93% of the container’s usable volume at the weight cap — but the heavy-wall 370 ml format reaches 26 t with roughly a quarter of the space unused, because 4 mm walls make each jar 380 g. That is also why its container count (≈ 61,200) is lower than the lighter 430 ml format (≈ 73,200) despite being the smaller jar.

Two practical consequences:

• A 20ft container is always volume-limited for candle jars. Our heaviest 20ft load is about 15 t — nowhere near the 28 t spec. If a supplier tells you a 20ft “hits the weight limit”, the cartons are probably over-packed or the quote is padded.
• For a 40ft, ask which limit applies to your jar. If your format is weight-limited, the freight per jar is higher than the cbm maths suggests, and the loading plan should say so explicitly.

Pallets or loose cartons: what palletising costs you

Loose floor-loaded cartons are the default for full-container glass shipments — maximum fill, no pallet cost. But many European buyers, especially brands shipping into 3PL warehouses in Ireland, the Netherlands or Poland, require palletised loading for warehouse compatibility.

Palletising trades quantity for handling:

• A 20ft takes 8–10 standard pallets; a 40ft high-cube takes 18–22, depending on pallet size and carton overhang.
• Pallet footprints and double-stack limits reduce effective loading volume by roughly 10–15% — on a 40ft of 220 ml jars, that is 14,000–21,000 jars.
• Palletised loads add pallet weight and cannot always double-stack, which can bring the weight limit closer.

If your warehouse needs pallets, say so at quotation — the loading plan, carton count and freight all change together, and retrofitting the decision after production is far more expensive.

Mixing designs in one container

Most real orders are not 60,000 of one jar. Standard practice at our factory:

• 2–4 designs share one container routinely; each design keeps its own cartons and dividers, so colours and finishes stay separated.
• The 3,000 pcs per design minimum still applies to each format — see our wholesale candle jar buying guide for how the quantity tiers work, and our cost and MOQ guide for the pricing logic behind them.
• The loading plan lists cartons per design, so your forwarder can split delivery or warehouse receipts by SKU.

A worked example shows how the maths scales down. Say you need 10,000 pcs of the 220 ml format: that is 112 cartons of 90 jars, or 4.4 cbm — about 16% of a 20ft container. Below roughly 30% container fill, LCL groupage shipping usually beats paying for an empty two-thirds of a container, with the trade-off of higher breakage exposure and longer transit — our glass shipping guide covers that decision in detail.

Estimate your own jar: the four-step method

For any jar with a known carton spec, the estimate takes four steps:

1. Carton volume: length × width × height in metres = cbm per carton.
2. Cartons by volume: usable container volume ÷ carton cbm. Use ≈ 28 cbm for a 20ft, ≈ 65 cbm for a 40ft high-cube, and round down to whole cartons.
3. Weight check: cartons × gross carton weight. If this exceeds the payload (≈ 26,000–28,000 kg), divide the payload by the carton gross weight and use that carton count instead.
4. Jar count: cartons × jars per carton.

Running the 220 ml format back through the chain: 0.42 × 0.355 × 0.265 m = 0.0395 cbm per carton → 65 ÷ 0.0395 = 1,645 cartons by volume → 1,645 × 16.8 kg = 27.6 t, over payload → capped at 26,000 ÷ 16.8 = 1,547 cartons → × 90 jars = ≈ 139,200 pcs per 40ft high-cube. The same jar in a 20ft stops at the volume step: 708 cartons ≈ 63,700 pcs.

Once you have the container quantity, the calendar question follows: our Chinese New Year 2027 order cut-off guide maps these container loads against real production and shipping deadlines — and for 2027 the window is tighter than usual.

Frequently Asked Questions

How many glass jars fit in a 20ft container?

Between roughly 19,000 and 128,000 candle jars depending on capacity, for jars from 95 ml to 730 ml. A 20ft holds about 800 export cartons (≈ 28 cbm usable), so the count is carton size times jars per carton. The most common candle jar sizes (220–430 ml) fall between about 31,500 and 64,000 jars per 20ft. A 20ft load of glass jars is always limited by volume, not weight.

How many candle jars fit in a 40ft high-cube container?

Roughly 44,500–277,000 jars for 95–730 ml formats, at about 65 cbm usable volume. For 6 of our 9 current formats the payload limit (about 26,000 kg) caps the load before the space does. The most common 220–430 ml candle jars load about 61,000–139,000 pcs per 40ft high-cube.

Do you load glass jars loose or on pallets?

Both, and the choice changes the count. Loose floor-loaded cartons are the default for full containers — about 28 cbm usable in a 20ft and 65 cbm in a 40ft high-cube. Palletised loading for warehouse compatibility reduces the quantity by roughly 10–15% because pallet footprints and stacking limits waste space. Confirm the requirement at quotation so the loading plan matches your warehouse.

Can I mix different jar designs in one container?

Yes. Two to four designs routinely share one container; each design ships in its own cartons with dividers, so colours and finishes stay separated. The 3,000 pcs per design minimum applies to each format in the container, and the loading plan lists cartons per design so deliveries can be split by SKU.

Why is a 40ft container of small glass jars limited by weight, not space?

Glass is dense — a carton of 95 ml votive jars weighs about 430 kg per cbm of carton volume. A 40ft high-cube carries about 26,000–26,500 kg of payload, which small-jar cartons reach before filling the 65 cbm of usable space. In our packing data, 6 of 9 formats are weight-capped in a 40ft, including several mid-size jars; heavy-wall formats can hit the weight limit with a quarter of the space unused.

How do I estimate jars per container for my own jar size?

Multiply carton length × width × height for cbm per carton, divide usable container volume (≈ 28 cbm for a 20ft, ≈ 65 cbm for a 40ft high-cube) by the carton cbm, round down to whole cartons, then check cartons × gross weight against the payload (≈ 26,000–28,000 kg) and cap if needed. Multiply the final carton count by jars per carton. Confirm the loading plan with your supplier before booking.