If your package has a large size-to-weight ratio, you should consider your package's dimensional weight when calculating your shipping rates.
This document contains:
The package weight rounded up to the next whole pound.
Multiply the length by the width by the height (each rounded to the nearest whole inch) of each package to determine its cubic size.
Dimensional Weight = (L x W x H) ÷ 139
L = Length in inches
W = Width in inches
H = Height in inches
Dimensional weight may be applied to all services offered by UPS, whether domestic in Puerto Rico or to and from the United States and internationally.
Compare the package's actual weight to the dimensional weight. The greater of the two is the billable weight and should be used to calculate the rate.
For multiple package shipments, total the billable weight of all packages in the shipment.
A Large Package Surcharge will be applied to each UPS package when its length plus girth [(2 x width) + (2 x height)] combined exceeds 118 inches, but does not exceed the maximum UPS size of 157 inches.
Large Packages are subject to a minimum billable weight of 90 pounds in addition to the Large Package Surcharge.
An Additional Handling charge will not be assessed when a Large Package Surcharge is applied.