ELI5: Explain Like I'm 5

Dimensional weight

So imagine you have 2 boxes, one bigger but lighter and the other one smaller but heavier. Now, if you want to send both of them through a shipping company, the company needs to figure out how much it will cost to send each box.

But instead of just looking at the weight of the box, they will also look at how big it is. They do this because sometimes a big box takes up more space in the delivery truck or plane, even though it is not as heavy. So the shipping company will use something called “dimensional weight” to make sure they charge the right amount for each package.

To find out the dimensional weight, the shipping company will measure how big the box is in inches (length x width x height). Then they will divide that number by a special number that they use for their calculations (this number is different for each shipping company).

If the dimensional weight of the box is greater than its actual physical weight, then the company will charge you based on the bigger number. This means that sometimes you might have to pay more to ship a light but bulky package than you would to ship a smaller, heavier package.

So, to sum it up, dimensional weight is a way for shipping companies to make sure they charge the right amount for shipping based on how much space a package takes up, not just how heavy it is.
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