From Red Stag Fulfillment -- For the first time since 2015, (when Dimensional weight was introduced) FedEx and UPS have different formulas for their DIM Weight calculations AND different base shipping rates for their ground services. This makes calculating accurate DIM weight more complicated than ever for businesses and individuals shipping products to customers.
Due to the confusion we've heard from readers on our blog, we created an updated DIM Weight Calculator & Pricing Tool. Not only does our tool calculate the DIM Weight of a parcel (using the most recent formula changes from FedEx & UPS), but we also display the base shipping rates for FedEx and UPS so that users have all information on a single page.
Check out the calculator here!