Beginning January 3, 2011, the divisor used to calculate dimensional weight has changed.
- U.S. Domestic Air services has changed from 194 to 166.
- U.S. Domestic Ground services has changed from 194 to 166 (applies to packages 3 cubic feet or larger in size).
- Export services from the U.S. (all services) has changed from 166 to 139.
- Export services to Canada has changed from 166 to 139 (applies to packages 3 cubic feet or larger in size).
- Import to the U.S. from Canada and Virgin Islands has changed from 166 to 139.
Dimensional weight for international multiple package shipments is based on the greater of the actual weight or dimensional weight of each package in the shipment.