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How do you measure weight by size?

Published in Dimensional Weight 2 mins read

You measure weight by size using a method known as dimensional weight, which calculates the weight of a package based on its volume. This is especially relevant for shipping carriers.

Understanding Dimensional Weight

Dimensional weight, also referred to as volumetric weight, accounts for the space a package occupies rather than its actual weight. This is because large, lightweight packages can take up as much space on a truck or plane as heavier, smaller ones. Shipping companies use this method to ensure that they are compensated for the space utilized, as well as the weight.

The Dimensional Weight Calculation:

The provided reference outlines the process to calculate dimensional weight:

  1. Measure the Package: Determine the length, width, and height of the package in inches.

  2. Multiply Dimensions: Multiply the length, width, and height together: length x width x height.

  3. Divide by a Dimensional Factor: Divide the result of the multiplication by a dimensional factor. According to the provided reference this factor is 139.

    • Formula: (Length in inches Width in inches Height in inches) / 139 = Dimensional Weight in pounds

Example

Here's a simple example:

  • Package Dimensions: 20 inches long, 10 inches wide, and 8 inches high.
  • Calculation: (20 inches 10 inches 8 inches) / 139
  • Result: 1600 / 139 = 11.51 pounds

This means that even if the package weighs less than 11.51 pounds, the shipping cost will be calculated based on a weight of 11.51 pounds using dimensional weight.

Practical Insights

  • Shipping carriers often use a dimensional weight calculation to charge for packages.
  • Knowing the formula helps you optimize your packaging to save on shipping costs.
  • Dimensional weight is most relevant when shipping large and lightweight items.
  • Some carriers may use different dimensional factors. It is important to consult the specific carrier's policy.
Step Action
1. Measure Length, width, and height of the package in inches.
2. Multiply Length Width Height
3. Divide Result from step 2 / 139 (Dimensional Factor)
Result Dimensional Weight in Pounds.

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