The volume of a courier shipment that takes up space on the plane always costs more than the actual weight of the shipment. So volumetric weighting was set up to calculate the volumetric weight for each shipment, compare it with its actual weight to determine your exact shipping costs.
Notes: There are 2 ways of fee charging
1/ Calculating by the gross weight = A
2/ Calculating by the volume. Volumetric calculation formula:
Length * width* height (cm)/5000 = B
Comparing between gross weight & volumetric weight to charge fee. If A is larger than B, A will be charged, otherwise, if B is larger than A, it will be charged with B.