//CBM//
Stands for:
Cubic meters
How to calculate it:
Multiply (in meters) the length, width and height of the shipment

//Volumetric/dimensional weight//
What is it:
Pricing technique for commercial freight transport which uses an estimated weight in kg or pounds that reflects the density of a package (less dense item usually occupies more space/volume in comparison to weight)
How to calculate it:
Multiply parcel's three dimensions and if in cm divide by 5000 (4000 for EU) and if in inches divide by 305 (245 for EU) 

//Chargeable/billable weight//
What is it:
The weight charged by the courier for a parcel
How to calculate it:
The greater weight when comparing volumetric weight and actual physical weight



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