Revenue ton, weight or measure and W/M are terms used in freight rating to express a chargeable quantity. In many LCL scenarios, the shipment is compared by both volume and weight so very dense freight is not rated only on cube and very light bulky freight is not rated only on scale weight.
The common planning comparison
A widely used planning convention compares cubic metres with metric tonnes and uses the greater number. Under that convention, 1 m³ competes with 1,000 kg as one revenue unit.
The Revenue Ton Calculator performs that comparison directly.
Example: volume controls
An 8 m³ shipment weighing 2,500 kg compares 8 CBM with 2.5 tonnes. The larger value is 8, so the shipment is volume-controlled in that simplified W/M model.
Example: weight controls
A 3 m³ shipment weighing 5,000 kg compares 3 CBM with 5 tonnes. The larger value is 5, so weight controls the revenue quantity.
Why this matters
If an LCL quote is stated per W/M, multiplying the rate by CBM alone can understate cost for dense cargo. The LCL Freight Cost Calculator combines W/M with an entered rate, minimum charge and fixed charges.
Check the quote language
Forwarders, terminals and lanes can define minimums, rounding and charge bases differently. Treat the W/M calculation as the arithmetic layer, then confirm exactly how the specific quote applies it.