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Via dimensional weight charges, carriers like UPS and FedEx have the ability to rate lower density shipments at a higher weight…thus increasing the charge for the shipment. The DIM factor/divisor for both UPS and FedEx are updated periodically. UPS currently has a DIM factor/divisor of 139 for daily rates and 166 for retail rates. FedEx is 139. The change in DIM factor/divisor for both carriers always results in more packages being assessed a dimensional weight charge as opposed to a charge based on actual weight. Although some companies may have been able to negotiate a custom DIM factor/divisor, thus minimizing the occurrence and additional cost associated with DIM’d packages, it is very important that shippers verify the legitimacy of each individual DIM charge appearing on their carrier’s invoice. The carriers have an automated scanning system that evaluates the need for a shipment DIM charge. In large part, the scanning system is accurate; however, if multiple packages happen to be stacked on top of each other it will likely result in an erroneous DIM assessment. If there are DIM charges appearing on your carrier’s bill for box sizes that do not represent one of your company’s standard box sizes, then it is likely that a DIM charge was incorrectly assessed and can be refunded to your account. You can ensure the legitimacy and accuracy of your dimensional weight charges…and much more by setting up a [free Lojistic account](https://app.lojistic.com/account/create). Our platform will automatically audit your UPS and FedEx invoices (audit is free and always will be) and uncover a number of cost savings opportunities. [Set up a Lojistic account today and send costs packing.](https://app.lojistic.com/account/create) ![Rich Harkey Headshot](https://www.lojistic.com/assets/public/users/rich.png) Author Rich Harkey Rich Harkey Senior Strategy Manager Rich Harkey is a results-driven professional with extensive experience in the logistics and supply chain industry. As the Senior Strategy Manager at Lojistic, Rich leverages over three decades of expertise to help businesses improve their shipping strategies and reduce costs. With a deep understanding of the requirements of shippers and the operational intricacies of carriers, he excels in everything from optimizing business rules and managing carrier invoices to negotiating carrier contracts. Rich's comprehensive knowledge of the logistics industry, combined with his strategic insights and passion for data analysis, has enabled thousands of companies to gain visibility into their shipping expenses, driving impactful results. 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