MyUS TruePrice: Pay For What Your Package Weighs


What is volumetric weight, and how is it calculated?

With other international couriers, you can be charged for more than just your package weight. They use volumetric or dimensional weight, calculated with this volumetric weight formula:

Volume (Length x Width x Height) / Dimensional Factor (Ranges from 139 in3 to 166 in3 by carrier)

How does this impact international shipping costs? Volumetric weight is based on the amount of space your package takes up, and because it accounts for both weight and dimensions, this often means higher charges to deliver your packages. Those shipping costs from volumetric weight can add up, especially for international shopping, parcel forwarding, and shipments.

trueprice infographic

Avoid volumetric weight shipping charges and save money with MyUS TruePrice

Using MyUS TruePrice, we estimate and charge shipping rates based on package weight only* for international shipments from the US. With TruePrice, you can save money whenever you ship internationally.

  • Eliminate extra charges: Thanks to TruePrice, larger packages with lighter weights cost less.
  • Estimates are simple: No surprises or hidden costs; you only pay for what your package weighs.*
  • Big savings for members: TruePrice has saved MyUS members over $25 million in shipping costs.
Person typing into a calculator

How do we calculate MyUS TruePrice rates?

Understanding your shipping costs is simple. Using MyUS TruePrice, you only need your package’s weight for an estimate. No confusing calculations with weight and dimension factors are required.

Calculate your shipping cost


MyUS TruePrice™

MyUS package

Actual Package Weight: 28 lbs.

Size: N/A

green check mark

No calculations or
confusing math needed.

Billable Weight


28 lbs.


Other Shippers

Other Shipper's Package

Actual Package Weight: 28 Lbs.

Size: 30 X 15 X 15

Calculate the cubic size:

30" x 15" x 15" = 6,750 cubic inches.

Calculate the dimensional weight:

6,750/139 = 49 lbs.

Determine if dimensional weight (49 lbs.)

is greater than actual weight (28 lbs.)

Your final price is the
higher of the two weights.
Billable Weight

Varies by carrier’s dimensional factor

49 lbs.

Calculate Your Shipping Costs

MyUS TruePrice vs. Other Shippers' volumetric rates

Shipment* Details MyUS
Shipper 1
Shipper 2
Baby Car Seat

Baby Car Seat

10” x 25” x 20”


Actual Weight 15 lbs 15 lbs 15 lbs
Dimensional Weight N/A 51 lbs 45 lbs
Billable Weight 15 lbs 51 lbs 45 lbs
Receiving Included True Price False False
No Weight Limit True Price False True
Consolidation Included True Price True False
Delivery Time 2-5 days 2-5 days 3-5 days
  Total Shipping Price* $137.59 $461.97 $384.28

Consolidate your package with MyUS

Shipping multiple purchases internationally? With package consolidation, you can get all your items at once AND save money on shipping. There’s no need to wait around for multiple packages, we securely bundle your purchases and send them directly to your doorstep. The best thing about MyUS package consolidation benefits is they come at no extra cost to MyUS Premium and Business members.

Woman in front of various packages

Volumetric Weight FAQ

Volumetric weight and dimensional weight are the same things. They are calculated by multiplying (length x width x height) and then dividing by the dimensional factor (ranging from 139 in3 to 166 in3 by carrier).

Volumetric weight and actual weight measure different properties of a package:

  • Actual weight measures how heavy a package is by using an ordinary weighing scale.
  • Volumetric weight measures how much space a package takes up; both weight and dimensions matter. Volumetric weight puts space at a premium. Lighter packages can even cost more to ship via volumetric weight because of the size of their shipping materials.

Other shippers use volumetric weight to plot out space in transport vehicles and net more packages per delivery. Using volumetric weight in this way benefits businesses but can be confusing for customers. Not all shippers use the same dimensional factor to calculate volumetric weight, which means shipping cost estimates can vary from shipper to shipper.

That’s why we provide accurate and upfront pricing for MyUS members, so you are not left guessing. Our simple TruePrice system using actual weight saves members money, too!

Volumetric weight is calculated by taking overall volume (length x width x height) and dividing it by a dimensional factor. Dimensional factors typically range from 139 in3/lb (or 5000 cm3/kg in metric) to 166in3/lb (6000 cm3/kg in metric). The dimensional factor numbers are pre-determined densities for calculating the final volumetric weight.

This depends on the size and scale of the package. Volumetric weight can be less if a package is very heavy but takes up little space. In these cases, shippers using volumetric weight will often charge based on actual weight because of the higher shipping cost.