Dimensional Weight Calculator

FedEx & UPS DIM Weight Calculator

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Billed Weight Zone {{ n+1 }}
{{billUPS}} lbs {{ value }} *
{{billFedEx}} lbs {{ value }} *

* Prices shown are FedEx & UPS Base Daily Rates. Red Stag clients receive substantial shipping discounts off the FedEx and UPS Base Rates. Please Contact Us for more information.

Base Shipping Rate Calculation

UPS will bill you for your parcel at {{billUPS | decimalonly}} pounds since the DIM weight is not greater than the parcel's actual weight.

FedEx will bill you for your parcel at {{billFedEx | decimalonly}} pounds since the DIM weight is not greater than the parcel's actual weight.

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What is DIM Weight?

Prior to 2015, the cost to ship a parcel was based on a very simple formula. Carriers used a table that would assign a base shipping rate for every combination of weight (1-150 lbs) and zones (distance to be shipped). The heavier the package and/or the further it needed to travel, the more it cost to ship.

 

On the surface, this formula makes perfect sense, until you think about one loophole: Carriers like FedEx and UPS have a fixed amount of space available in their trucks and aircraft. It’s this space that’s at a premium, not necessarily the net weight of a parcel. Because of this, in 2015 FedEx and UPS introduced a new pricing model called Dimensional (DIM) Weight. The purpose of this DIM weight pricing was to calculate FEdEx/UPS shipping costs based on the amount of space a parcel would take up, and charge accordingly.

 

DIM Weight v. Actual Weight

 

The FedEx/UPS dimensional weight formula is: (Height x Width x Length)/Dim Factor = DIM Weight. DIM weight is short for dimensional weight and is also referred to as volumetric weight.

 

If your package is relatively heavy and small, the actual weight will likely be more than the DIM weight, (think about shipping iron dumbbells). In that case, your FedEx/UPS shipping cost will be based on the actual weight. However, if the DIM weight is more than the actual weight, you’ll be charged based on the DIM weight, (imagine shipping a lightweight titanium bike frame). These larger, parcels are more likely to be adversely affected by DIM weight pricing.

 

DIM weight example

 

FedEx and UPS will always use the larger value, DIM Weight or Actual Weight, as the final Billed Weight.

 

How to Calculate Dimensional Weight

FedEx Shipping Calculator: Dimensional Weight Changes for 2017

FedEx has changed its DIM Factor from 166 to 139. This means that DIM weights (also called dimensional weight or volumetric weight) for FedEx parcels will be greater than before.

 

For example, in 2016, if you shipped a 10” x 10” x 10” package that weighed 5 pounds, your old DIM weight calculation would be (10 x 10 x 10)/166 = 7 pounds dimensional weight. You would be charged for shipping a 7-pound package, since the DIM Weight is greater than the actual weight.

FedEx DIM Weight
With the new DIM Factor, the dimensional weight of that same package is now 8 pounds. (10 x 10 x 10)/139 = 8 pounds. Your FedEx shipping charges would be based on the DIM weight of 8 pounds, since it’s greater than the actual weight.

 

FedEx has also changed its base billing rates. Both FedEx and UPS used to have the same base billing rates. Now, for packages of the same rate, UPS has a slight price advantage in Zones 2 through 4. FedEx tends to be slightly cheaper in Zones 5 through 8.

 

UPS Shipping Calculator: Dimensional Weight Changes for 2017

UPS on the other hand, kept the same DIM Factor of 166 for packages smaller than or equal to 12” x 12” x 12” (1,728 cubic inches). Only for parcels measuring more than 1,728 cubic inches is UPS’s new DIM Factor of 139 used.

 

For example, if you shipped a 10” x 10” x 10” package that weighed 6 pounds, your UPS DIM weight calculation would be (10 x 10 x 10)/166 = 7 pounds dimensional weight. You would be charged for shipping a 7-pound package since the DIM weight is the same as the actual weight. This is the same shipping charge as last year. For this package, UPS has a DIM weight one pound less than FedEx. However, package that same 6-pound item in a less-optimal 12″ x 12″ x 14″ box, and the UPS DIM factor drops to 139, causing the billed weight to increase to 15! (12 x 12 x 14)/139 = 15 pounds.UPS DIM WeightUPS has also changed its base billing rates. Both UPS and FedEx used the same base billing rates in the past. Now, for packages of the same rate, UPS has a small price advantage in Zones 2 through 4. FedEx is a bit cheaper in Zones 5 through 8.

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