Note: Effective January 22, 2018, due to carrier changes, the divisor will become 139 in for ALL shipments.
Dimensional weight, also called DIM weight, is a pricing technique used for commercial freight transfer, including courier and postal services.
Since space on a delivery truck is limited, dimensional weight takes into account package density to determine shipping rates. Freight carriers calculate shipping charges based on whichever number is greater: the actual weight of the package or its calculated dimensional weight.
Within ShipBob pricing, when the dimensional weight is greater than the actual weight, the dimensional weight is used instead of the package's actual weight.
Dimensional weight for domestic and international packages is calculated as follows:
(L x W x H)/139
If you have any further questions, please consult your Account Manager or our Customer Success team.