For brands that may struggle to keep up with changes in consumer purchasing habits, it may be difficult to know which strategies to employ in order to create a cost-effective and efficient shipping solution. There are many options for brands to consider that can reduce spend and improve efficiencies; however, knowing where to start is key. While there are a variety of factors that determine the best choice to address unique shipping needs, one critical component is to understand how dimensional-based pricing (or density-based pricing) can impact overall shipping rates. 

Dimensional-based pricing or density-based pricing is a practice carriers use to price the cost of transporting parcels based on their size, in addition to weight. 

How dimensional (DIM) weight works 

Carriers calculate a DIM weight that determines the weight of the parcel based on the parcel size, as opposed to the actual weight in order to generate a price for shipping. If the parcel’s actual weight is more than the DIM weight, then that weight is billed. The carrier always charges for the higher weight. 

For example, if a package has a DIM weight of 10 pounds, but it has an actual weight of 7 pounds, the package would be calculated at the 10 pound weight. 

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