The Google Shopping Category Taxonomy and category list can be found here.
There are thousands of categories in the taxonomy that need to be provided, especially for categories like: ‘Apparel & Accessories’, ‘Media’, and ‘Software’ categories require Google Product Categories. For all other categories, it is recommended but not required to include Google Product Categories. The relevancy gains of providing Google product categories are immense, and should not be overlooked.
Google Product Categories can be subdivided only in the UK, US, France, Germany, Japan, Italy, Netherlands, Brazil, Norway, Sweden, Turkey and Australia. Product type is recommended for segmentation for other countries.
Category ID name or Category number can be used for Google Product Categories.
The main product in a bundled item should be used for the category of the bundle. For example, when submitting a digital SLR camera bundled with a bag the correct Google Product Category would be ‘Cameras & Optics > Cameras > Digital Cameras’, because the digital SLR camera is the main product in the bundle.
Items in the ‘Apparel & Accessories category’ can be generally specified or more specifically. For example, Coats and Jackets could be put under 1604 or ‘Apparel & Accessories > Clothing’ or 203 or more specifically ‘Apparel & Accessories > Clothing’ > Outerwear’ or even more specifically 5598 or ‘Apparel & Accessories > Clothing’ > Outerwear > Coats & Jackets’.
Some categories may fit under several categories, but only one Google Product Category is allowed. Choose the category that best describes your item and which is the most specific.
If you’ve ever found yourself asking how do I map my products to Google Shopping categories, we can actually do all the heavy lifting! We have a function that can easily map your categories to Google Shopping.