Please enable cookies to allow videos to display across the site. Click the icon in the bottom left of the site to adjust your preferences.


Useful tools to help you adopt and implement GS1 standards.

From finding out which company owns a barcode to calculating a check digit for your barcode we have some useful tools to help.

Check digit calculator

Calculate the correct check digit for your barcodes.


Find out who owns a barcode.

Global Data Model (GDM)

View information about the GS1 Global Data Model.

GPC browser

Explore the Global Product Classification standard.

When to change a GTIN

Find out which product changes require the allocation of a new GTIN.

Global Model Number (GMN) generator

Generate a Global Model Number which can be used as a Basic UDI-DI.