Time for action – how to configure shipping by weight
The first thing to do is to tell PrestaShop the weight of each of your products so that it can sum it up together. So let's get on with it:
During the setup of your products, we discussed the weight property in the product configuration page. If you didn't define the weight then but now if you have decided to calculate shipping by weight, then click back into your products and configure the weight before continuing.
Click on the Shipping tab. Put zero in the handling charge box unless of course you want a handling charge on top of the delivery charge. Clear the box labeled Free shipping starts at for the price because we are not interested in order price in this tutorial. Finally, put a weight you want free shipping to start at, if any, in the box labeled Free shipping starts at for the weight.
Now we will define some weight ranges. Click on the Weight ranges subtab and then on Add new.
Type in the starting value of your first order weight...
