I am having a very difficult time finding some clear answers on using dimensional weight in Magento 2. Dimensional weight is generally an option with different shipping providers but all of the articles I have found online imply that dimensional weight is just default in Magento 2 when using a major shipping provider. Every article also sounds like it has just been optimized for SEO but are not actually useful because they don't fully make sense. Here are several examples:
Four main carriers supported in Magento 2 Dimensional Weight shipping method includes: ... Although the configuration of each carrier may differ, all shipping service providers require you to have a shipping account which provides you with essential information like user ID, gateway URL to complete the setup of each shipping method. Because these 4 shipping methods share some major similarities, I will only focus on the configuration of United Parcel Service.
The article goes on to not mention how to actually enable or configure dimensional weight. Other similar articles:
There is a guide for Dimensional Weight from Magento directly but it is for 1.9.x and states that it is not supported and you need to use a third party service/module (http://docs.magento.com/m1/ce/user_guide/shipping/weight-dimensional.html).
Let's assume that is supported (even though I have not seen hard evidence of it), how could dimensional weight be supported with dimensions being part of the Magento product set up. We could set custom attributes to products but width, length and height would need to be present for a true dimensional weight to be calculated.
I'm basically just looking for a hard yes or no and to be pointed in the direction of a solution if there is one.