This article is about cookies usage for Google Analytics 4 properties. To learn about cookies for Universal Analytics, see this article instead.
The following table describes each cookie set by gtag.js. To learn more about the data that Analytics collects, see Safeguarding your data.
|Cookie name||Default expiration time||Description|
|_ga||2 years||Used to distinguish users.|
|_gid||24 hours||Used to distinguish users.|
|_ga_<container-id>||2 years||Used to persist session state.|
|_gac_gb_<container-id>||90 days||Contains campaign related information. If you have linked your Google Analytics and Google Ads accounts, Google Ads website conversion tags will read this cookie unless you opt-out. Learn more.|