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How to create a GA4 user acquisition report in BigQuery

A query to generate the Google Analytics 4 user acquisition report in BigQuery. In this report you'll find data about your new users, engaged sessions, engagement time and rate, segmented by medium, source and campaign.

This article contains a query that you can use to create a custom user acquisition report, based on your Google Analytics 4 export data in BigQuery.

The result of the query will not be an exact replicate of any report in the GA4 user interface. While designing this report, we took into account:

  • the available data fields in GA4 export
  • current (GA4) and legacy (GA3/UA) user interface reports
  • data definitions according to documentation (if available)
  • scope (user / session / event / item)
  • common sense
It is expected that the results for this query will not match with any GA4 user interface report. This can occur for a variety of reasons.

This query can be used:

  • to create a result table that can be opened in Google Sheets or exported as csv
  • to save as a BigQuery table, for further analysis
  • to create (and frequently update) a BigQuery table that feeds a dashboard (e.g. Looker Studio)
  • to use as a starting point to design your own report

Report dimensions

The report contains the following dimensions:

  • date
  • first user default channel group
  • first user source
  • first user medium
  • first user source / medium
  • first user campaign

Report metrics

The report contains the following metrics:

  • total users
  • active users
  • new users
  • % new users
  • sessions
  • engaged sessions
  • engagement rate
  • engaged sessions per user
  • average engagement time in seconds
  • events per user
  • total event count
  • specific event count
  • conversions
  • user conversion rate
  • purchase revenue
Unless stated otherwise, all calculated user metrics are based on total users.