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.