Define each number before comparing it
CBM is outside volume in cubic metres. A metric tonne is 1,000 kilograms of gross shipment weight. Under a common LCL weight-or-measure model, one CBM is compared numerically with one metric tonne, and the larger value becomes the base W/M or revenue-ton quantity.
Do not compare CBM directly with kilograms. A shipment of 2.4 CBM and 1,600 kg compares 2.4 with 1.6 metric tonnes, so measure controls in that model. The forwarder's quotation or tariff defines the actual equivalence, minimum, and rounding.
Keep measurement and pricing on separate lines
First total every distinct handling unit: outside dimensions × quantity for CBM, and gross weight per piece × quantity for kilograms. Next calculate the raw W/M basis. Only then apply the minimum chargeable quantity, per-W/M ocean rate, per-W/M surcharges, and fixed fees.
This sequence prevents three common errors: double-counting cartons already included in a pallet envelope, letting a one-W/M minimum overwrite unrelated fixed charges, and multiplying origin or document fees by W/M when they are quoted per shipment.
- Use one row per carton, crate, or pallet type.
- State whether cargo is tendered loose or palletised.
- Label every price as per W/M, per shipment, per document, or actual.
Compare quotes and invoices on the same scope
Align origin, destination, Incoterm, currency, tax treatment, validity, free time, and included local services before ranking quotes. A lower ocean rate can lose once CFS, documentation, delivery order, customs, storage, or inland transport is added.
Retain the original cargo lines and the forwarder's remeasurement record. If the invoice changes, reconcile CBM, gross weight, minimums, and fee units independently instead of disputing only the final total.
Working checklist
- ✓ CBM by cargo line
- ✓ Gross kilograms and tonnes
- ✓ Quoted W/M equivalence
- ✓ Minimum by fee line
- ✓ Per-unit and fixed fees
- ✓ Currency and scope
- ✓ Remeasurement evidence