Measurement Ton (M/T, Freight Ton)
Detailed Freight Guide & Operational Context
A Measurement Ton (M/T), also commonly referred to as a Freight Ton (F/T) or Revenue Ton (R/T), is a traditional maritime freight calculation unit based on volumetric cargo displacement.
In the metric system, 1 Measurement Ton is defined as 1 cubic meter (1 CBM or 35.314 cubic feet). In the imperial system (common in North American tariffs), 1 Measurement Ton is defined as 40 cubic feet (approx. 1.133 cubic meters).
Carriers charge freight based on 'Weight or Measurement' (W/M), whichever yields the greater revenue. If a shipment's volume in CBM exceeds its gross weight in metric tonnes, the carrier charges on a Measurement Ton basis (volumetric freight). This is especially prevalent in Less-than-Container-Load (LCL) consolidation and breakbulk shipping.
Frequently Asked Questions about M/T
What is a Measurement Ton in ocean shipping?
A Measurement Ton is a volumetric rating unit equal to 1 cubic meter (CBM) in metric tariffs or 40 cubic feet in imperial tariffs.
How does Weight vs Measurement (W/M) work?
Shipping lines compare the shipment's weight in metric tonnes against its volume in cubic meters and bill freight on whichever number is higher.
What is the difference between a metric ton and a measurement ton?
A metric ton measures actual physical mass (1,000 kg / 2,204.6 lbs), while a measurement ton measures cargo volume (1 cubic meter or 40 cubic feet).
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