Dimensional Weight Formula

The dimensional weight formula is a standardized calculation used to determine volumetric weight by multiplying a shipment's length, width, and height in centimeters and dividing by 6,000. The divisor of 6,000 is an industry standard, set by the International Air Transport Association (IATA) to ensure fairness. Airlines use this formula to calculate chargeable weight by comparing volumetric weight against actual weight and billing for whichever is higher, ensuring aircraft space is monetized effectively. Some carriers use a divisor of 5,000 instead of 6,000 to calculate volumetric weight, which results in bulkier shipments being charged at a higher rate.

A Lufthansa Cargo shipment with AWB number 020-12345672 contains electronics measuring 80cm × 60cm × 50cm with an actual weight of 25kg. Using the dimensional weight formula (80 × 60 × 50) ÷ 6,000 = 40kg volumetric weight. Since 40kg exceeds the actual weight of 25kg, the shipment is billed at 40kg chargeable weight. An Emirates SkyCargo consignment with AWB 176-98765431 ships textiles measuring 120cm × 80cm × 70cm weighing 112kg actual. The volumetric weight calculation (120 × 80 × 70) ÷ 6,000 = 112kg matches the actual weight, so billing applies at 112kg.

• dim weight formula
• volumetric weight formula
• L x W x H divided by 6000
• 5000 divisor

What divisor should I use in the dimensional weight formula for different carriers?

Standard air freight uses IATA's 6,000 divisor in the formula (L × W × H) ÷ 6,000. Express courier services like DHL, FedEx, and UPS typically use 5,000 as the divisor, resulting in higher volumetric weights. Some road freight carriers use divisors of 3,000 or 4,000. Always confirm the specific divisor with your carrier before calculating shipping costs.

How does the dimensional weight formula work with imperial measurements?

For imperial measurements, multiply length × width × height in inches, then divide by 366 to get volumetric weight in kilograms, or divide by 139 to get volumetric weight in pounds. These divisors are equivalent to the metric calculation using the 6,000 divisor and maintain the same 1:6 ratio of cubic space to weight.