A key consideration in air freight pricing is dimensional weight, a calculation that factors in the size of a package in addition to its actual weight. This determines the billable weight when the space a package occupies is disproportionate to its mass. For instance, a large, lightweight box might be charged based on its dimensions rather than its actual weight in kilograms or pounds. The formula typically involves multiplying the length, width, and height of the package (in centimeters or inches) and dividing by a cubic conversion factor specific to the airline.
This approach ensures fair compensation for the use of cargo space, particularly benefiting airlines by optimizing revenue on flights where space is a premium. Historically, freight charges were solely based on gross weight, leading to inefficiencies as lightweight but bulky items took up significant room. The introduction of dimensional weight encourages shippers to package goods efficiently, reducing the overall volume of shipments and potentially decreasing fuel consumption per unit of cargo transported. The practical impact is a more equitable and sustainable air cargo industry.