Bounce rate

In GA4, the % of sessions that were not engaged — people who left quickly without interacting.

What it means

Bounce rate shows the share of visits where people arrived, did very little and left.

In GA4, bounce rate is the percentage of sessions that were not engaged sessions. It is the opposite of engagement rate.

How it works

GA4 counts a session as engaged if it meets at least one of these conditions:

It lasts longer than 10 seconds
It includes a key event (GA4 renamed "conversions" to "key events" in 2024)
It has two or more page or screen views

Any session that meets none of these counts as a bounce.

Bounce rate = 100% − engagement rate

The older Universal Analytics, retired in July 2023, defined bounce rate differently. There, a bounce was a single-page session, even if the visitor spent ten minutes reading. So old articles may not match GA4 reports.

A simple example

A saree shop in Surat runs an Instagram ad that sends people to a new collection page. In one week, the page gets 1,000 sessions. Of these, 600 are engaged: people scroll, open products or stay longer than 10 seconds. The other 400 leave almost immediately.

Engagement rate = 600 ÷ 1,000 = 60%. Bounce rate = 100% − 60% = 40%.

Why it matters

A high bounce rate on an important page can signal a problem: slow loading, a mismatch between the ad and the page, confusing design or a weak headline. Bounce rate helps you spot pages that need attention first.

Beginner tips

Compare bounce rate across pages and traffic sources, not as one site-wide number.
Make sure your ad or post promise matches what the landing page shows.
Check mobile speed, since many visitors browse on phones.
Common mistake: assuming every bounce is bad. A visitor who finds your phone number within a few seconds and calls you may still count as a bounce.