Updated: May 27, 2026
Engagement Rate and Bounce Rate are important metrics in Google Analytics that enable you to measure and analyze user engagement with your website or app.
Engagement Rate
Engagement Rate represents the percentage of sessions that are considered “engaged sessions.”
The formula is:
In Google Analytics 4 (GA4), a session is classified as an engaged session if it meets at least one of the following conditions: lasts longer than 10 seconds, has a key event, or has at least 2 pageviews or screenviews.
For example, if your website records 1,810 sessions and 693 of them are engaged sessions, the Engagement Rate would be: 693/1810≈38.3%
This means that 38.3% of users interacted meaningfully with the website.
Bounce Rate
Bounce Rate is essentially the inverse of Engagement Rate. It measures the percentage of sessions that were not considered engaged sessions.
In other words, a session is treated as a bounce when:
- The session lasts less than 10 seconds
- No key events are triggered
- Only one page or screen is viewed
The formula is:
Using the same example above:
- Engagement Rate = 38.3%
- Bounce Rate = 100% − 38.3% = 61.7%
Key Difference Between Engagement Rate and Bounce Rate
In GA4, Engagement Rate is the primary metric, while Bounce Rate serves as its complementary metric.
- High Engagement Rate generally indicates that users are interacting actively with your content.
- High Bounce Rate may suggest that users leave quickly without meaningful interaction.
However, Bounce Rate should always be interpreted in context. For example, a user may quickly find the exact information they need on a single-page article and leave satisfied, which can still count as a bounce in GA4.