CBM (Cubic Meter) is the core unit for measuring cargo volume in foreign trade logistics, widely used in billing and space arrangement for sea, air, and land transportation. It is calculated as length × width × height (in meters). For example, a carton measuring 0.5m × 0.4m × 0.3m has a volume of 0.06 CBM. Use cases include: quoting freight rates (e.g., LCL sea freight is charged by CBM), calculating container loading capacity, and determining whether cargo is volumetric (comparing volumetric weight with actual weight). Notes: Different modes of transport have different precision requirements for CBM, typically rounded to three decimal places; distinguish CBM from CBF (cubic feet), where 1 CBM ≈ 35.3147 CBF; also pay attention to the difference between actual and theoretical volume to avoid cost disputes caused by measurement errors. The difference from weight ton (W/M) is that CBM is used for volume-based billing, while W/M charges based on the greater of weight ton or volume ton.
📝 Examples
1. This shipment consists of 20 cartons in total, each measuring 0.6m × 0.5m × 0.4m, with a total volume of 2.4 CBM. Please calculate the LCL sea freight based on this figure. (Used to calculate total CBM and serve as the billing basis)
2. The customer requests air freight, but the actual weight of the cargo is 150kg and the volume is 1.2 CBM. The volumetric weight is 200kg (converted at 1:167), so the chargeable weight is 200kg. (Demonstrates the application of CBM in air freight volumetric weight calculation)
💡 Foreign Trade Tips
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