Dimensional (DIM) weight is how carriers price bulky but lightweight packages. It’s based on the space the package takes up—not just its actual weight.
We cannot choose to ship a package with either actual or dimensional weight as this is decided by the shipper, not us.
Why is it used?
Shipping companies need to efficiently pack and transport packages, and bulky, lightweight items can take up a lot of space even if they don't weigh much. DIM weight helps ensure they're compensated for the space these items occupy.
How is it calculated?
The formula typically involves multiplying the length, width, and height of the package (in inches or centimeters) and then dividing by a DIM factor specific to the shipping company.
Example: If a box measures 18x18x18 inches and weighs 10 pounds, the DIM weight calculation might result in 36 pounds, even though the actual weight is only 10 pounds. The shipping company would then use the higher DIM weight to calculate the shipping cost.
Important Note:
The shipping cost is determined by whichever is higher: the actual weight or the DIM weight.
In essence, DIM weight is a way for shipping companies to account for the space a package takes up, ensuring that the cost reflects both the weight and volume of the shipment.
Tip: Consolidating and repacking items can reduce dimensional weight and save on shipping.