How to Calculate Chargeable Freight Weights for Sea, Air and Trucking?

It is important to remember in the Freight Industry, you get charged on chargeable weight which is determined by either the Cubic Meters or the Actual Weight of the shipment. This is what we call “chargeable weight “.

Each mode of transport has a different cubic kgs ratio :


Airfreight: 1 cubic = 167 kgs
Seafreight: 1 cubic = 1000 kgs
Trucking 1 cubic = 333 kgs

Chargeable weight

Freight companies charge on either Gross weight or Chargeable weight whichever is the highest. This is very important on airfreight shipments. As airfreight space is limited, one could have a low weight item with high volume and therefore it , we need to charge on the volume/space occupied by the shipment.
Example: A chair that weighs 1kgs but actually “volumes out “to occupying space for a 3 kgs in chargeable shipment – you would have to pay for the space you occupy which is the chargeable weight

To be able to calculate your chargeable weight on your pallet or box / the following are important steps to understand how to calculate .

1. Find out the Length x width x height of the shipment x number of boxes /pallets
2. Find out the Gross Weight of the shipment


Example :

Pallett: 1
Gross Kgs; 800
Dimensions: 1.20 x 0.80 x 1.60 cm
Cubic = 1.53 cubic

This is what you would be charged if you decided to send it by :

– 1.53 cubic x 167 kgs = 255 kgs
– You would be billed on 800 kgs being higher than the cubic

– 1.53 cubic x 1000 = 1.530 kgs
– You would be billed on the Cubic being higher than the 800 kgs


– 1.53 cubic x 333 = 509.49 kgs
– You would be billed on 800 kgs being higher than the cubic

Please always remember to provide the dimension and weight of your cargo to be able to obtain a correct costing of your shipment.


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