How is air freight cost calculated - weight vs dimensions?

Short answer Air freight costs are calculated based on both weight and dimensions of the package. Carriers use a formula that considers the greater of the actual weight or the volumetric weight, which is derived from the package's dimensions. This ensures that the pricing reflects the space a package occupies in the aircraft. What to check Actual weight of the package (in kilograms or pounds). Dimensions of the package (length, width, height in centimeters or inches). Carrier's specific volumetric weight formula (often length x width x height divided by a dimensional factor). Any additional fees that may apply, such as handling fees or customs charges. VAT and IOSS implications for shipments within the EU. What to do next Weigh your package using a reliable scale to determine its actual weight. Measure the dimensions of your package accurately (length, width, height). Calculate the volumetric weight using the carrier's formula (usually dividing the cubic centimeters by 5000 or 6000, depending on the carrier). Compare the actual weight and the volumetric weight; the higher of the two will be used for cost calculation. Check with your chosen carrier for any additional fees that may apply to your shipment. Ensure you understand the VAT and IOSS requirements for your shipment, especially if shipping to or from EU countries. Contact the seller or carrier if you have any questions regarding the shipping costs or requirements. Common pitfalls Underestimating the volumetric weight can lead to unexpected shipping costs. Neglecting to factor in additional fees such as handling or customs charges. Not being aware of VAT and IOSS implications, which can affect the total cost and delivery time. Using inaccurate measurements or weights, which can lead to shipping delays or additional charges. Pro tip Always double-check the carrier's guidelines for weight and dimension calculations to avoid surprises. Keep in mind that shipping costs can vary significantly between carriers, so it’s wise to compare options before making a decision.