Free freight tool
LCL Freight W/M Calculator
Estimate LCL ocean freight by comparing shipment CBM with weight in metric tons. Apply the quoted W/M rate, identify the controlling revenue tons, and add entered accessorial charges.
Estimated LCL freight total
USD 0
Chargeable 1 revenue tons by minimum. Measurement 0 CBM versus weight 0 metric tons. Base freight USD 0 plus USD 0 entered charges.
Uses the common ocean LCL W/M rule: one revenue ton is the greater of 1 CBM or 1,000 kg, subject to the entered minimum. Quotes may use trade-lane-specific minimums, rounding, density rules, currencies and surcharges; enter every quoted charge before comparing against a freight invoice.
Recommended next step
Parse the freight invoice and match quoted versus billed charges.
Short answer
How LCL freight is calculated
LCL ocean freight is charged per revenue ton on a weight-or-measure basis. Compare the shipment's volume in cubic metres with its gross weight in metric tons and take whichever number is higher — that is the revenue ton count. Multiply it by the quoted W/M rate to get the base ocean freight, then add origin and destination charges, which on a small LCL shipment routinely exceed the freight itself.
- 1 revenue ton = 1 CBM or 1,000 kg, whichever is greater
- Most tariffs apply a minimum of 1 RT
- Local charges are usually quoted per RT as well
- The all-in landed cost is the only number worth comparing
LCL Weight or Measure Freight Estimate
- Convert weight to revenue tons
- Compare CBM with W/M weight
- Estimate base ocean freight
- Add and audit accessorial charges
LCL W/M Formula and Calculation Method
The calculator compares shipment CBM with metric tons under the W/M basis, applies the quoted rate to the controlling revenue tons, then adds entered charges.
Carrier tariffs can include minimums, rounding and local charges not represented by a simple W/M estimate.
What weight or measure (W/M) actually means
Weight or measure is a pricing basis, not a unit. It exists because a ship is constrained by two things at once: how much space cargo takes and how much it weighs. A carrier that charged only by weight would lose money on pillows; one that charged only by volume would lose money on steel. W/M resolves this by charging on whichever measure is more expensive for the carrier to carry.
The conversion is deliberately simple: one cubic metre is treated as equivalent to one metric ton. Compare your shipment's CBM against its weight expressed in metric tons, take the greater figure, and that is the number of revenue tons — often abbreviated RT, W/M or occasionally 'freight ton' — that the rate is applied to.
| Shipment | Volume | Gross weight | Revenue tons | Controlled by | Base freight |
|---|---|---|---|---|---|
| Cushions | 8.400 CBM | 1,150 kg (1.150 t) | 8.400 RT | Measurement | USD 378.00 |
| Ceramic tiles | 2.100 CBM | 3,900 kg (3.900 t) | 3.900 RT | Weight | USD 175.50 |
| Mixed hardware | 4.000 CBM | 4,000 kg (4.000 t) | 4.000 RT | Either — they tie | USD 180.00 |
| Sample carton | 0.180 CBM | 42 kg (0.042 t) | 1.000 RT (minimum) | Tariff minimum | USD 45.00 |
Rates shown are illustrative. Always apply your own quoted rate and confirm the tariff minimum, which is commonly 1 RT but can be higher on some lanes.
The formula, step by step
The arithmetic is short, but the inputs are where shipments go wrong. Use the CBM and gross weight from the source document — the packing list or the Bill of Lading — not the figures from a quotation prepared before the goods were packed. LCL is measured and weighed at the consolidation warehouse, and the CFS measurement is what you will be invoiced on.
- 1Total the shipment volume in cubic metres from the packing list, adding each carton group separately.
- 2Total the gross weight in kilograms and divide by 1,000 to express it in metric tons.
- 3Take the higher of the two figures — that is your revenue ton count.
- 4Apply the tariff minimum if the result is below it, which for most LCL tariffs means rounding up to 1 RT.
- 5Multiply the revenue tons by the quoted W/M rate to get base ocean freight.
- 6Add every origin charge, destination charge and per-document fee separately, noting which of them are also charged per RT.
- 7Compare the all-in total against an FCL quotation before committing.
The CFS re-measure is the figure that counts
Consolidators measure and weigh cargo on receipt, and they measure the outside of the cargo as presented — including pallets, overhang, shrink wrap and any protruding edge. A pallet base of 1.2 × 1.0 m with cartons stacked to 1.5 m is measured as 1.8 CBM even if the cartons themselves total 1.55 CBM. Build that into your estimate rather than discovering it on the invoice.
The charges that are not ocean freight
On a typical small LCL shipment, the W/M ocean freight is a minority of the final bill. Local charges at both ends are where the cost sits, and they are the main reason a headline rate of 'USD 12 per CBM' can turn into a four-figure invoice for three cubic metres. Ask for these in writing before booking, and ask which are per RT, which are per shipment and which are per Bill of Lading.
Origin charges
Incurred before the container leaves the load port, usually billed by the consolidator or the origin agent.
- CFS receiving or warehouse handling, normally per CBM or per RT
- Origin terminal handling (THC), per RT or apportioned per shipment
- Bill of Lading or documentation fee, per document
- Export customs declaration and any inspection fee
- Advance manifest filing where the destination requires it, such as AMS for the United States or ENS for the European Union
- VGM submission fee, and fumigation or ISPM 15 treatment if wooden packaging is used
Destination charges
Frequently the larger half of the bill, and frequently the half that was not quoted. On a collect or ex-works LCL shipment these land on the consignee, which is a common source of disputes.
- Destination THC and CFS deconsolidation or unstuffing, per RT
- Delivery order and documentation release fee
- Customs clearance, entry filing and any duty or tax disbursement fee
- Storage after free time at the CFS, which is usually much shorter than FCL demurrage free time
- Customs examination, X-ray or tailgate inspection charges if selected
- Final mile delivery, chassis, waiting time and any residential or limited-access surcharge
LCL against FCL: where the crossover sits
LCL wins on small volumes because you pay only for the space you use. FCL wins once you are buying enough revenue tons that a whole container becomes cheaper per unit — and it wins on more than price, because an FCL box is not opened, re-measured, unstuffed or exposed to other people's cargo.
The crossover in most trades falls somewhere between 13 and 15 CBM, but the ocean freight comparison alone is misleading. LCL destination charges scale with volume; FCL destination charges are largely fixed per container. That means the true crossover is often lower than the freight-only comparison suggests, sometimes as low as 10 CBM on lanes with expensive CFS handling.
| Factor | LCL | FCL |
|---|---|---|
| Cost basis | Per revenue ton, plus per-RT local charges | Per container, largely fixed |
| Transit time | Longer — consolidation and deconsolidation add days at both ends | Shorter — direct terminal to terminal |
| Handling | Cargo is handled loose at least twice more | Sealed at origin, opened at destination |
| Damage exposure | Higher: co-loaded with unknown cargo, restacked at CFS | Lower: your cargo only |
| Free time at destination | Short CFS storage allowance, often 3–7 days | Longer demurrage and detention free time |
| Measurement risk | Re-measured at CFS; the invoice can exceed the quote | None — you bought the box |
| Best for | Under about 13 CBM, or when cash flow rules out full loads | Above about 13–15 CBM, fragile or high-value cargo, tight schedules |
Auditing an LCL invoice
LCL invoices are worth checking line by line, because the number of separately quoted components makes silent additions easy. The most productive audit is not recalculating the freight — it is confirming that the volume and weight the carrier billed on match the volume and weight your packing list declares.
- Confirm the billed CBM against your packing list, and ask for the CFS measurement record if they differ by more than a rounding margin
- Confirm the billed gross weight against the weighbridge or CFS weight ticket
- Check which measure controlled: being billed on weight when your cargo is clearly volume-controlled is an arithmetic error worth challenging
- Verify the rate applied matches the written quotation, including the validity date — LCL rates expire quickly
- Check each local charge against the quotation and query anything that was not disclosed
- Confirm that per-RT charges used the same revenue ton figure as the freight line
- Check whether the tariff minimum was applied correctly on small shipments
- Confirm currency and any exchange rate applied to locally billed charges
Keep the calculation, not just the answer
Export the calculation audit and file it with the packing list and the invoice. A dispute raised three weeks later is won by whoever can show their working — a reconstructed argument from memory almost never recovers the difference.
LCL Freight Calculator FAQ
Practical answers to the questions operators, forwarders and shippers ask most often about lcl freight w/m calculator results.
What is a revenue ton in LCL shipping?
A revenue ton — also written RT, W/M or freight ton — is the greater of one cubic metre of volume or one metric ton of weight. It is the unit LCL freight and most LCL local charges are billed on. A shipment of 6.2 CBM weighing 2.1 tonnes is 6.2 RT; the same 6.2 CBM weighing 9 tonnes is 9 RT.
How do I calculate LCL freight cost?
Take the greater of the shipment's CBM and its gross weight in metric tons, apply the tariff minimum if the result is below it, and multiply by the quoted W/M rate. That gives base ocean freight. Then add every origin and destination charge separately — on shipments under about five revenue tons, those charges usually exceed the freight line, so a freight-only estimate will materially understate the cost.
Why did the consolidator bill more CBM than my packing list shows?
Because LCL cargo is measured as presented at the CFS, not as calculated from carton dimensions. Pallets add height, shrink wrap and overhang add width, and irregular stacks are measured to the outermost point. A palletised shipment is routinely 10–20% larger by measurement than the sum of its cartons. Ask for the CFS measurement record if the difference looks larger than that, and build the allowance into future quotations.
Is 1 CBM always equal to 1,000 kg for freight?
For ocean LCL under a W/M basis, yes — that is the standard conversion. It is not the conversion used in air freight, where the divisor is typically 6,000 cm³/kg for general cargo and 5,000 cm³/kg for express, giving 167 kg and 200 kg per cubic metre respectively. Do not carry an air divisor into an ocean calculation or vice versa.
What is the minimum charge for an LCL shipment?
Most LCL tariffs apply a minimum of one revenue ton, so a shipment of 0.3 CBM weighing 60 kg is still billed as 1 RT. Some lanes and some consolidators set a higher minimum, and separate minimums often apply to individual local charges. Confirm the minimum in writing — it is the single biggest determinant of cost on very small shipments.
At what volume should I switch from LCL to FCL?
Commonly between 13 and 15 CBM, but compare landed cost rather than ocean freight. LCL local charges scale with revenue tons while FCL local charges are largely fixed per container, so on lanes with expensive CFS handling the crossover can fall to around 10 CBM. Also weigh the non-price factors: FCL is faster, handled less and not exposed to co-loaded cargo.
Are destination charges included in an LCL quote?
Often not. A quotation that names only a per-CBM ocean rate is quoting one line of a bill with eight or ten lines. Always ask for the destination charge schedule in writing before booking, especially on collect or ex-works terms where the consignee receives them. Undisclosed destination charges are the most common LCL complaint and the hardest to negotiate after arrival.
How is chargeable volume rounded?
Practice varies. Many tariffs bill to three decimal places of a cubic metre; others round up to the next 0.1 or the next whole RT. Rounding rules materially change small invoices, so confirm them at the quotation stage rather than assuming, and check the applied rounding when you audit the invoice.
Does LCL have demurrage and detention?
Not in the same form. Because you never take possession of a container, there is no detention. What you do face is CFS storage at destination once free time expires, and that allowance is typically much shorter than FCL free time — often three to seven days. It accrues per revenue ton per day, so a slow customs clearance on a bulky LCL shipment gets expensive quickly.
Which document should I take the CBM and weight from?
The packing list for planning and the Bill of Lading for verification, because the B/L reflects what the carrier accepted. If the two disagree, resolve the difference before the invoice arrives — a mismatch between the packing list and the B/L is also one of the fastest ways to attract a customs query at destination.
Can I use this calculator for break bulk or air freight?
No. Break bulk uses its own tariff structures with different conversion factors, and air freight uses volumetric divisors rather than the 1 CBM to 1 tonne equivalence. Use the chargeable weight calculator for air and express shipments, and obtain a specific quotation for break bulk or project cargo.
Can GainingDocx audit freight invoices automatically?
Yes. Extracting a freight invoice returns every charge as a separate reviewable line rather than a grand total, and grouping it with the Bill of Lading and packing list from the same shipment lets the workspace compare billed volume, weight and references against the transport documents that support them.
Related tools, templates and guides
- CBM calculatorProduce the cubic-metre total that drives the whole W/M comparison.
- Freight invoice parserExtract every charge line from an LCL invoice for audit against the quotation.
- Container load calculatorCheck whether the same cargo justifies a full container instead.
- Demurrage and detention calculatorAudit the time-based charges that follow an ocean shipment to destination.