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LCL volumetric weight calculation

Updated 2026-10-06 · Qingdao Hing Shipping

LCL Sea Freight from China: How Chargeable Volume and Weight Are Calculated

The most common mistake European importers make with LCL sea freight from China is assuming the chargeable weight works like air freight. It doesn’t. If you search for 拼箱海运计费重量按体积还是重量怎么算, the short answer is: LCL ocean freight normally bills by volume in CBM, and weight only takes over when the cargo is dense enough to hit the W/M rule. That single misunderstanding causes a lot of unexpected invoices, especially for machinery parts, tiles, liquids, and heavy Amazon FBA cartons.

Air freight uses a volumetric divisor, usually 6000 cm³ per kg. LCL sea freight does not. A consolidator takes your total cubic meters, compares that to your total gross weight in metric tons, and charges whichever number is larger. In practice, most China-to-Europe LCL quotes are still per CBM all-in, with an overweight condition buried in the tariff. If your cargo runs heavier than roughly 1,000 kg per CBM, the forwarder will re-rate the shipment.

Why LCL sea freight does not use the air freight divisor

Ocean LCL pricing is built around space on a container floor. A 40HQ can hold about 67-68 CBM of cartons if the cargo is light and stackable. It can also hit its payload limit around 26,000-28,000 kg. When you book LCL, you’re buying a slice of that container. The carrier cares about two things: how much floor space you consume, and whether your weight breaks the container’s legal or practical limits.

That’s why the industry uses revenue tons. One revenue ton equals either 1 CBM or 1,000 kg, whichever gives the carrier more money. So a shipment of 4.2 CBM and 3,100 kg is charged on 4.2 CBM, because 3.1 metric tons is less than 4.2. A shipment of 2.1 CBM and 3,400 kg is charged on 3.4 revenue tons, because 3.4 metric tons is greater than 2.1 CBM.

Some forwarders quote “per CBM” but still apply the same math internally. They may show the freight as USD 185 per CBM, then add an overweight surcharge if density exceeds 1,000 kg/CBM. Others quote a straight W/M rate. Read the tariff line, not just the headline number.

How to calculate CBM before the forwarder measures it

You can estimate chargeable volume yourself. Measure each carton in meters, not centimeters. Multiply length × width × height, then multiply by the number of cartons. Do it per SKU if the carton sizes differ. Round each carton up to two decimals before adding. Most forwarders round the final total up to the nearest 0.1 CBM, and many LCL tariffs have a minimum of 1 CBM.

A real example: 40 cartons, each 60 × 40 × 25 cm. That’s 0.6 × 0.4 × 0.25 = 0.06 CBM per carton. Times 40 = 2.4 CBM. If the gross weight is 980 kg, density is about 408 kg/CBM. You’re billed on 2.4 CBM. If the same cartons weighed 2,350 kg, density is 979 kg/CBM. Still volume. Push it to 2,600 kg and density is 1,083 kg/CBM. Now the weight basis kicks in, and the chargeable figure becomes 2.6 revenue tons.

Here’s how the W/M comparison looks across a few realistic LCL shipments:

Notice shipment C. It’s close to the threshold but still volume. Shipment D is not huge, but the pallets are dense. If you ship tiles, tools, or bottled liquids, this table is the one to check before you approve the booking.

拼箱海运计费重量按体积还是重量怎么算: The W/M rule in practice

The formula is simple. Total gross weight in kg ÷ 1,000 = metric tons. Then compare that number to total CBM. Chargeable revenue tons = the larger of the two. If the freight rate is USD 185 per revenue ton, shipment B above pays 2.35 × 185 = USD 434.75 on the ocean leg. Shipment A pays 2.4 × 185 = USD 444. The heavy one is cheaper because it’s smaller in volume, even though it weighs more.

That last point surprises people. Weight is not automatically bad. Density is what matters. A 1.5 CBM crate weighing 1,600 kg is expensive per CBM because it’s 1,067 kg/CBM. A 6 CBM pallet stack weighing 1,800 kg is cheap per CBM because it’s only 300 kg/CBM. The consolidator can stack light cargo around heavy cargo, but it can’t create floor space.

There are also practical caps. A single carton over 50 kg may need a heavy-lift label. A piece over 1,000 kg may need special handling at the CFS. A shipment with a density above 1,500 kg/CBM can be rejected by some LCL services because it risks damaging the container floor or exceeding forklift limits. In that case, FCL is often cheaper and safer, even if you only have 8-10 CBM.

What the all-in LCL rate includes and what it does not

Most China-to-Europe LCL quotes you see online are port-to-port or terminal-to-terminal. The “all-in” rate of USD 150-250 per CBM for Shanghai to Hamburg or Rotterdam in 2026 usually covers origin export customs, CFS receiving, ocean freight, destination terminal handling, and sometimes destination customs clearance. It rarely covers import duty, VAT, delivery to your warehouse, or Amazon FBA appointment fees.

Here’s a real cost breakdown for 3.2 CBM and 1,850 kg from Shanghai to Hamburg. Density is 578 kg/CBM, so it bills on volume.

That’s not the whole landed cost. German import VAT is 19%, and duty depends on the HS code. For FBA sellers, add label removal, palletization, and appointment scheduling if the supplier doesn’t provide it. Some carriers also changed their low-sulfur surcharge in late 2025, so the ocean line item can move by USD 8-15 per CBM between quotes. Ask for a validity date.

Heavy cargo, pallets, and FBA shipments: when weight changes the invoice

Amazon FBA sellers usually ship cartons with a density between 250 and 500 kg/CBM. That’s volume-billed. But home goods, fitness equipment, and automotive parts can push past 1,000 kg/CBM. A standard EUR pallet at 120 × 80 × 150 cm is 1.44 CBM. If it weighs 350 kg, density is 243 kg/CBM. If it weighs 1,600 kg, density is 1,111 kg/CBM. The second pallet is billed as 1.6 revenue tons, not 1.44 CBM. On a USD 200/CBM rate, that’s a difference of about USD 32 per pallet. Over 12 pallets, it adds up.

Some forwarders handle this with an overweight surcharge instead of a full W/M re-rate. You might see USD 25-40 per 1,000 kg above the 1,000 kg/CBM threshold. Others simply re-rate the whole shipment. Get the exact rule in writing before you book. If a supplier tells you “it’s about 1 CBM per pallet,” ask for the gross weight per pallet too. Suppliers often quote net weight, not gross. Pallets, cartons, straps, and moisture can add 8-15% to the weight.

For FBA, the first-leg sea plus truck route from Ningbo or Shenzhen to a European fulfillment center is usually 25-38 days in 2026. That’s port-to-door, not including Amazon’s internal receiving delay. DDP door-to-door LCL is typically 38-45 days. If your product is heavy and low-value, LCL DDP can still make sense, but check whether the DDP quote is based on CBM or kg. A DDP quote at EUR 5.20/kg for a 400 kg/CBM product is very different from a DDP quote at USD 240/CBM.

Transit times and cost comparison for China to Europe in 2026

Rates below are realistic market ranges for Shanghai, Ningbo, or Shenzhen origins to Hamburg, Rotterdam, or Antwerp destinations. They exclude duty, VAT, and special handling unless noted.

| Mode | Route example | Transit time | 2026 rate range | Notes |
|---|---|---|---:|---:|---|
| FCL 40HQ | Shanghai-Hamburg | 28-35 days | USD 2,800-3,500 | Port-to-port. Good for 15+ CBM. |
| LCL | Shanghai-Hamburg | 32-40 days | USD 150-250/CBM all-in | Minimum 1 CBM. W/M applies. |
| LCL DDP | Shenzhen-Hamburg | 38-45 days | USD 220-320/CBM or USD 4.80-6.50/kg | Duty/VAT included. FBA friendly. |
| Sea + truck FBA first-leg | Ningbo-Amazon FBA | 25-38 days | USD 190-270/CBM plus delivery | Excludes duty/VAT. Appointment extra. |
| Rail FCL/LCL | Xi’an-Duisburg | 20-28 days | USD 3,200-4,200/40HQ or USD 180-260/CBM | Space tight in peak season. |
| Air freight | Shanghai-Frankfurt | 7-12 days | USD 4.50-7.00/kg | Not LCL. Volumetric divisor 6000. |

FCL becomes cheaper than LCL around 13-15 CBM for many China-Europe routes. If you’re at 12 CBM but the cargo is dense and awkward, get an FCL quote anyway. A 40HQ can take 26,000-28,000 kg payload, and you avoid destination CFS handling and LCL overweight surcharges. If you’re at 6 CBM but 7,000 kg, FCL may also win because LCL will bill you on 7 revenue tons.

Measure your cartons. Compare CBM and kg. Ask for the W/M basis in the quote. That’s the whole game with LCL sea freight chargeable weight.