Updated from original post on January 1st 2016 titled "UPS and FedEx Drop Actual Weight And Will Now Use Dimensional Weight For All Ground Shipments".
It’s that time a year again when UPS (United Parcel Service) and FedEx (Federal Express) announce their annual shipping rate increases. We get the added increase this year with the introduction of dimensional weight regardless of the shipping method used. Dimensional weight has been around for some time now, but mostly used for services other than Ground shipping prior to 2016. The only exceptions where the actual weight was not used for Ground shipments prior to 2016 were in cases where the dimensional weight was larger than 5184 cubic inches. But FedEx and UPS now coninute using dimensional weight for all shipments as of December 29, 2015.
How do I find out what the Dimensional Weight is?
We are all familiar with actual weight, but how is dimensional weight calculated? UPS and FedEx use the same calculation for domestic (within the United States) and international shipping as shown in the chart below.