Average session duration
The average length of a session, in seconds, across the date range.
Ask it in plain English
"What's average session duration for my blog vs. my product pages?"
Field details
| Type | Metric |
| GA4 API name | averageSessionDuration |
Good to know
Only counts sessions with more than one recorded event, so a large share of true one-and-done visits (a single page_view and nothing else) are excluded from the average entirely rather than dragging it toward zero - this is why a high-bounce page can still show a deceptively healthy average duration.
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- Google Analytics Data API - dimensions & metrics reference (official Google documentation)