New on Amazon FBA, how do I get the UPC code ?
Hey you can get it from UPC website or visit GS1 website.
Get a tool like asinzen and it will show you the listed UPC for each asin when you are on the listing page
Hello @Laszlo. Welcome to the Seller Forums!
The UPC codes are usually on the products you want to list.
Seller Central > Menu > Catalog > Add products
You can search using the UPC code to find out if the product is already listed in the Amazon catalog. You can also enter the ASIN, or a description of the product…
Thank you everyone for the information and support !!!
Go to speedy barcodes . You will get you first upc code for free
The best thing to do is just use GS1. That is the official company recommended by Amazon.
And just so you know, that UPC code turns into an FNSKU code when plugged into the Amazon listing
And once you plug it in, it is assigned to that product so it cannot be reused
Just a heads up
Feel free to reach out if you have any questions happy to help 
GS1
Yep! That’s what I used.
You probably already got this answered but using GS one is the best place to get UPC
And just to be clear when you plug that code into the Amazon listing, it turns into an FNSKU label which is what goes on your boxes, and what you sent to your manufacture
You do not need to put the UPC code on your box unless you’re going to be selling it in store outside of Amazon
Hope that makes sense. Feel free to let me know if you have any questions or clarification. Happy to help.