DIM Weight FAQ
The major carriers, FedEx®, UPS®, and USPS®, all use dimensional weight to price lighter packages that take up valuable space in a delivery truck or airplane. Dimensional weight is calculated by multiplying the length, width, and height of a package and then dividing by a denominator. If this number is larger than the weight of your package then you pay the higher number of the two.
|Domestic Services||DIM Calculations|
|FedEx Express® and FedEx Ground® Services||(Length x Width x Height) ÷ 139 inches for Express, Ground and international import/export packages|
|UPS Air® and UPS Ground® Services||(Length x Width X Height) ÷ 139 inches for packages greater than 1 cubic foot (1728 cubic inches). For packages under 1 cubic foot (1728 cubic inches), the calculation is Length X Width X Height ÷ 166 inches|
|USPS® parcel services (excludes USPS Parcel Select®)||(Length X Width X Height) ÷ 166 (effective June 23, 2019) inches (packages traveling 1000 miles or greater, or if package exceeds 1 cubic foot in size)|
|UPS SurePost®||(Length x Width X Height) ÷ 139 inches for packages greater than 1 cubic foot (1728 cubic inches). For packages under 1 cubic foot (1728 cubic inches), the calculation is Length X Width X Height ÷ 166 inches|
|FedEx SmartPost®||(Length x Width x Height) ÷139 inches for packages over 71lbs|
* All information in the chart above is based on publicly available sources as of June 2019. Neopost USA strongly recommends contacting individual carriers to understand their latest policies on dimensional weight rating. Note that carrier policies can be subject to change and table is used for illustrative purposes only.
The USPS® DIM divisor is currently 194 and it applies to packages over one cubic foot. On June 23, 2019, the DIM divisor for the USPS® will change to 166. For FedEx® and UPS® domestic ground and air parcel shipments, it is 139.
All packaging should be measured to see if it fits within dimensional weighting guidelines.
Per the USPS, if your mail piece isn’t a postcard, letter or a flat (large envelope), then it is a parcel! A parcel is usually anything that is larger than 3 inches high x 6 inches long x ¼ inch thick. However, when in doubt, measure anything that is not a letter that looks like it may qualify for dimensional weight pricing.
Most standard sized padded envelopes will not be subject to DIM weight. However, it is always important to measure your packaging—regardless of type or even if it is carrier provided or not—to see if it is larger than 1 cubic foot (over 1,728 cubic inches) and therefore subject to dimensional weight pricing.
It depends on a host of factors, average weight and distance traveled being most important. Additionally, the access to a scale is important—if there is no access or an inability to accurately weigh a package, then a flat rate package might be beneficial. In general, a shipper that can adequately plan for volume and box type is likely better served with their own packaging as opposed to a flat rate.
For more information about dimensional weight and the June 23, 2019 rate change please visit the rate change page on our website. For specific instructions on how to enter dimensional weight into your Neopost postage meter visit the Neopost Knowledgebase.
We are here to help you navigate this change, if you have any questions please use our chat bot our contact us directly. If you are interested in NeoShip shipping software to help make shipping easy call a shipping specialist today 877.888.0677.
There are USPS® discounted rates for shippers that use labels with Intelligent Mail Package barcodes (IM®pb) to ship. These labels give the USPS® and the shipper extra information on the package and its location, that benefits the USPS® and the shipper! These discounted rates apply to Priority Mail®, Priority Mail Express® and Parcel Select. To see how much you can save, download our USPS Rate Guide.