Analytics & measurementBeginner

Active user

An active user is a person GA4 counts as having engaged with your site or app in a period. It is the default user metric in most GA4 reports.

Also called: Users, Active users

In Google Analytics 4, the metric labeled Users in most standard reports is active users: people who had an engaged session, or who triggered certain first-visit or engagement events, in the selected date range. GA4 also offers Total users (anyone who logged any event) and New users (first visit). Because these are different counts, it pays to know which one a report is showing before quoting a number.

Active, total and new users

Total users counts every distinct user who triggered any event. Active users is narrower and is meant to exclude people who arrived and did nothing meaningful. New users counts people whose first visit fell in the period. Google documents the exact rules in its user metrics help pages, and they have been adjusted over time, so check the current definition if you need precision.

A user is normally identified by the client ID stored in a first-party cookie, so one person on a laptop and a phone counts twice. Sending a User-ID for logged-in visitors and enabling the right reporting identity can merge some of that activity.

Why active user counts drift

Cookie clearing, browser privacy features that shorten cookie lifetimes, consent banners that block analytics storage and ad blockers all reduce or inflate user counts in ways unrelated to real audience change. Treat user counts as a directional measure of reach rather than a census.

  • Declined consent: users may be modeled or absent, depending on your Consent Mode setup
  • Shorter cookie lifetimes in some browsers: returning visitors look new
  • Multiple devices: one person counted more than once

Useful ratios built on active users

Product teams use active users to build stickiness ratios such as daily active users over monthly active users. Marketing teams use them to normalize engagement, for example average engagement time per active user. Both are only as good as the identity behind the count.

Example

Reading a docs launch

Suppose Bramblequill, an API documentation tool, publishes a new guides section. Total users rise sharply, but active users barely move. Most new arrivals are landing from a social post and leaving within seconds.

That gap is a prompt to look at the landing pages and the promotion, rather than to celebrate the larger number.

Common mistakes

Quoting Users without saying which kind

Total users and active users can differ a lot. Name the metric when you share it.

Assuming users equals people

Without logged-in identity, a user is a browser on a device. Cross-device and cookie loss make the count approximate.

Questions

Different reports and explorations can use different user metrics and identity settings. Check whether the report shows active users or total users and which reporting identity is selected.

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