can anyone help me tell the exact formula of the average session duration where to get from? I'm having trouble finding a manual calculation of the average session duration

For example, from the google analytics report, I got an average session duration of 20 seconds. How is the manual calculation?

I've tried to calculate with this formula "Avg Session Duration = Session Duration / Sessions" but didn't find the same result

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    Where are you getting the data for "Session Duration" out of Google Analytics for each session? Commented Aug 8, 2020 at 9:19

1 Answer 1


The formula for average session duration is:

Avg Session Duration = sum(Session Duration) / Sessions

In other words, you add up the length of all the sessions and then divide by number of sessions.

I don't think there is any way to calculate this manually in Google Analytics because Google analytics doesn't provide a list of sessions to you along with the session duration of each. I just don't know of any report that will give you the data you need.

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