Shipping Measuring Units

Vessel and cargo capacities for shipping measurements and conversions.

Shipping Measuring Units

Internal Capacity of a Vessel

  • 1 register ton = 100 cubic feet

Measurement of Cargo

  • 40 cubic feet = 32.143 U.S. bushels = 31.16 Imperial bushels

Bulk weights less than 2000 pounds

  • Approximately 40 cubic feet of merchandise considered as a shipping ton

Bulk weights more than 2000 pounds

  • Freight charge based on weight
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Register Tons-- register tons
U.S. Bushels-- bushels
Imperial Bushels-- bushels
Shipping Ton Classification--
Measurement TypeUnitValueNotes
Internal Vessel CapacityRegister Ton100cubic feet per register ton
Cargo MeasurementCubic Feet40Equivalent to shipping measures
Cargo MeasurementU.S. Bushels32.143Per 40 cubic feet
Cargo MeasurementImperial Bushels31.16Per 40 cubic feet
Bulk Weight ClassificationLess than 2000 lbs40 cubic feetConsidered as shipping ton
Bulk Weight ClassificationMore than 2000 lbsWeight-basedFreight charge based on actual weight