Engagement rate = engaged sessions ÷ sessions; bounce rate = 100 percent − engagement rate
910 ÷ 1,400 = 65 percent engaged, 35 percent bounced
What counts as an engaged session?
A visit that meets any one of three tests, according to Google Analytics Help (Engagement rate and bounce rate): it lasts longer than 10 seconds, it includes a key event, or it has at least two page or screen views. Meeting one is enough. A visitor who lands on your booking page, reads for 40 seconds and leaves is engaged. A visitor who arrives and leaves in 4 seconds is not.
The tests are generous, so engagement rate says less about interest than the name suggests. It is best at catching the visits that went wrong: the people who arrived and left almost at once.
Where did bounce rate go?
It came back with a new meaning. In Universal Analytics, the older version of Google Analytics that stopped collecting data for standard properties in July 2023, a bounce was a visit that saw one page and sent nothing else, however long the visitor stayed. GA4 launched without bounce rate, and Google added it back in 2022 defined as the share of sessions that were not engaged.
So an old bounce rate and a new one are not the same measure. A one-page site where people read the details and call can show a bounce rate of 80 percent under the old rules and 30 percent under the new.
What does engagement rate say about a Hobart B&B's traffic? (example figures)
A four-room bed and breakfast in Hobart opens GA4's traffic report for a month and adds engagement rate beside its booking enquiries, which it tracks as a key event.
| Channel | Sessions | Engagement rate | Bounce rate | Booking enquiries |
|---|---|---|---|---|
| Organic search | 1,400 | 65 percent | 35 percent | 28 |
| Direct | 500 | 68 percent | 32 percent | 14 |
| Paid search (Google Ads) | 800 | 55 percent | 45 percent | 22 |
| Paid social (Meta) | 1,200 | 25 percent | 75 percent | 6 |
Meta sends the most paid visits and three in four leave inside 10 seconds. The owner opens the ad on a phone and finds the problem in a minute: the ad shows a sunrise over the Derwent and links to the home page, which opens with a slow-loading gallery. Linking the ad to the rooms page with prices, and lightening the page, is the first fix to try. Engagement rate found the problem. Booking enquiries are still the number that says whether the fix worked.
Does CoraVision read engagement rate?
No: from Google Analytics 4, CoraVision reads visits by channel, key events, purchases and revenue every night once GA4 is connected, which covers the visits and enquiries columns in the table above. Engagement rate stays in your GA4 reports, and during a session you start, Cora can look at that report with you on your screen, along with the page the visitors landed on.
Questions
How do I tell whether my engagement rate is low?
By comparison, because no single figure suits every site: set your channels against each other, and each channel against itself over time. A drop on one channel, with the others steady, points at something specific: a new ad, a broken page, or traffic from somewhere new.
Can the 10-second rule be changed?
Yes. In the web data stream's tag settings you can lengthen the timer for engaged sessions. The change applies from that day on, so engagement rate will step down on the date you made it, and comparisons across that date stop being like for like.
Why is my bounce rate lower in GA4 than it was in Universal Analytics?
Because the definition changed. Universal Analytics counted any one-page visit as a bounce, even a visitor who read for five minutes. GA4 counts that visitor as engaged, because the visit lasted longer than 10 seconds.