Air freight charges are billed based on whichever is greater: the Gross Actual Weight (in kilograms) or the Volumetric (Dimensional) Weight. International IATA standards apply the volumetric conversion formula:
Volumetric Weight (kg) = [Length (cm) × Width (cm) × Height (cm)] / 6000
Alternatively, if using inches: [L (in) × W (in) × H (in)] / 166 = Volumetric Weight (lbs). For example, if a shipment weighs 150 kg gross but measures 120 cm × 100 cm × 100 cm, its volumetric weight is 200 kg. Shippers are billed for 200 kg. Intertrans Express offers cargo optimization and repacking guidance to help reduce volumetric dimensional surcharges.