Starting August 18, UPS will round all fractional package dimensions up to the next whole inch, aligning with a similar change by FedEx. This means that dimensions, such as length, width, and height, will be rounded up; for instance, an 11.1-inch length will be considered 12 inches. Shippers may see increased delivery charges as this new policy could significantly raise dimension-based pricing, affecting costs for businesses shipping similar package sizes. An example cited indicates a potential annual increase of over $32,000 for a customer shipping 2,500 packages monthly.

Source: https://www.supplychaindive.com/news/ups-dimensional-weight-rounding-change/756929/