What is a GTIN? Complete Guide for Product Sellers

You've probably seen the term GTIN on Amazon's listing requirements or on retail packaging guidelines. This guide explains exactly what a GTIN is, why you need one, and how to get it.

What Does GTIN Stand For?

GTIN stands for Global Trade Item Number. It is the standard numbering system used worldwide to uniquely identify any physical product. When you scan a barcode at a checkout counter, the number encoded in that barcode is a GTIN.

The GTIN system is managed by GS1, the international organization that sets global standards for product identification. Every product sold through major retailers and online marketplaces uses a GTIN to ensure it can be uniquely identified anywhere in the world.

Types of GTIN Numbers

GTIN is an umbrella term that covers several barcode formats:

For most product sellers, GTIN-12 (UPC) or GTIN-13 (EAN-13) is what you need. Both are accepted by Amazon and major global retailers.

Why Do You Need a GTIN?

You need a GTIN for any of the following reasons:

GTIN vs Barcode: What's the Difference?

A GTIN is the number. A barcode is the visual representation of that number. When you buy a barcode, you receive both: the GTIN number (the string of digits) and the barcode image (the parallel lines that encode those digits visually). Scanners read the barcode image and decode it into the GTIN number.

How Amazon Uses GTINs

Amazon's product catalog is organized by GTIN. When you enter your GTIN while creating a listing, Amazon searches its database to see if that product already exists. If it does, your listing is linked to the existing catalog entry. If it doesn't, a new catalog entry is created.

This system ensures that the same product from multiple sellers appears in one place on Amazon, which improves the buyer experience and prevents duplicate listings.

What is a GTIN Exemption?

Amazon offers GTIN exemptions for products in certain categories, such as handmade goods, custom products, or niche categories where universal barcodes are not standard. However, GTIN exemptions are not guaranteed and can limit your listing's visibility in Amazon search results. For most sellers, purchasing a GTIN barcode is the better, more reliable option.

How to Get a GTIN for Your Product

FAQ: GTINs

Is a GTIN the same as a barcode?

A GTIN is the number inside the barcode. The barcode is the visual image. When you buy a barcode, you receive both the GTIN number and the barcode image.

How many GTINs do I need?

One per unique product or product variant. If you have 5 products each in 3 sizes, you need 15 GTINs.

Do GTINs expire?

No. GTINs purchased from gs1upc.shop have lifetime validity with no renewal required.

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