ASIN vs. EAN vs. SKU: definitions and a comparison

ASIN, SKU and EAN. You know what these numbers really mean and how they work? Along with other abbreviations and numbers, this can sometimes lead to misunderstandings and some trouble. With this article we want to give you an overview on the 3 numbers mentioned above and display what they actually mean.

What is the Amazon Standard Idenficitation Number?

The Amazon Standard Identification Number (ASIN) is the common identification number of almost all products which can be found on Books are the only exception, the equivalent number for books is called ISBN (International Standard Book Number). It was introduced by Amazon warehouses to ensure a proper handling of all products.

The ASIN consists of a unique sequence of 10 letters/numbers or both which is a big help for business partners in the field of e-commerce, even though the ASIN is not internationally standardised.

The ASIN can be found in the product listing and the other way round, people can find products by searching for the ASIN.

EAN – the bardcode for your product

The EAN, now rather called GTIN is a unique and unmistakable identification number which marks commercial articles and consists of 8-13 digits. This numerical sequence gets coded and you receive the barcode which goes with the number. It’s in the barcodes of your product packaging.


The ASIN, due to the fact that it is not officially recognized all around the world, it can be transferred to a EAN easily and at any time. This is possible the other way round as well. The GTIN is usually converted into a barcode which is machine-readable. The ASIN can be found on the Amazon page of the particular product. This number can also be found in the URL of the web page of the product.

SKU – Amazon Stock Keeping Unit

SKUs (Stock Keeping Units) ist a series of identifying numbers that allows you to get information about the actual lcoation of your stock. It is mainly used to make inventory management for online sellers easier. The SKU can include short abbreviations from the actual product like the size, the colors, etc.

Every business has its own SKU and when you are storing in Amazon’s warehouses for example, this number allows you to track your goods and articles.