Volumetric Weight

Volumetric weight is a calculated weight based on the dimensions of air cargo shipments, used to determine chargeable weight when cargo occupies significant space relative to its actual weight. Airlines use the higher of actual weight (gross weight) or volumetric weight for billing, with IATA's standard formula being (Length × Width × Height in cm) ÷ 6,000. The divisor of 6,000 is the industry standard set by IATA to ensure fairness across airlines. This system prevents airlines from losing revenue on lightweight but bulky shipments that consume valuable cargo hold space.

A FedEx Express shipment with AWB 023-87654321 contains packaging materials weighing 25 kg but measuring 120 × 80 × 60 cm, resulting in a volumetric weight of 96 kg [(120 × 80 × 60) ÷ 6,000], so the chargeable weight is 96 kg. A Lufthansa Cargo shipment with AWB 020-12345678 carries machinery parts weighing 150 kg in dimensions of 80 × 60 × 40 cm, with a volumetric weight of only 32 kg [(80 × 60 × 40) ÷ 6,000], so the chargeable weight remains 150 kg based on actual weight.

• dimensional weight
• dim weight
• volume weight
• CBM weight

What is the standard IATA divisor for calculating volumetric weight in air cargo?

The IATA standard divisor is 6,000 for international air freight, though express couriers like DHL, FedEx, and UPS often use 5,000 for their networks, resulting in higher volumetric weights for the same package dimensions.

How do I determine if my air cargo shipment will be charged by volumetric weight or actual weight?

Calculate volumetric weight using (Length × Width × Height in cm) ÷ 6,000, then compare it to your actual gross weight. The airline will always charge based on whichever figure is higher—this becomes your chargeable weight.