The chargeable weight is either the actual weight or the converted volumetric weight, whichever is the highest. Volume is converted into weight by a 1m³=200kg ratio.
Conversion of volume: The volume is converted by a ratio of 1m³ = 200 kg. So for 1m³ the chargeable weight is at least 200 kg (even if the actual weight is only e.g. 150 kg) but if the actual weight is e.g. 250 kg the chargeable weight is 250kg.
Let’s demonstrate with an example:
A box with dimensions in cm 62 x 40 x 30
How to calculate the volume?
0,62 x 0,40 x 0,30 = 0,0744m³
What is the volumetric weight of this box?
0,0744 x 200 = 14,88 kg à 15 kg
If the actual total weight is higher than 15 kg than the chargeable weight is the actual weight.
If the actual weight is lower than 15 kg than the chargeable weight is the volumetric weight.
For every item in your shipment this is calculated and the sum of all the chargeable weights of all the boxes/suitcases is the total chargeable weight upon your quote is calculated.
For palletized air shipments the volume is calculated by the outside dimensions of the pallet.