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GA3 to GA4 Dimension Equivalency Mapper
Map Universal Analytics (GA3) dimensions and metrics to their GA4 equivalents for migration.
| Universal Analytics | GA4 | Note |
|---|---|---|
| Users | Total users / Active users | GA4 reports show active users as "Users". |
| New users | New users | |
| Sessions | Sessions | GA4 does not restart a session at midnight or on a new campaign, so counts run lower. |
| Bounce rate | Bounce rate | Now the share of sessions that were not engaged (engaged = 10s+, 2+ views, or a key event). |
| Pageviews | Views | |
| Unique pageviews | No direct equivalent | |
| Pages / session | Views per session | |
| Avg. session duration | Average session duration / Average engagement time | Engagement time only counts time the page was in focus. |
| Goal completions | Key events (formerly "conversions") | Mark an event as a key event in Admin. |
| Goal conversion rate | Session key event rate / User key event rate | |
| Event category / action / label | Event name + event parameters | Register parameters as custom dimensions to report on them. |
| Custom dimension (hit scope) | Event-scoped custom dimension | |
| Custom dimension (user scope) | User-scoped custom dimension (user property) | |
| Custom dimension (session scope) | No direct equivalent | Usually rebuilt as an event-scoped dimension. |
| Source / Medium | Session source / medium; First user source / medium | Pick session- or user-scoped depending on the question. |
| Landing page | Landing page + query string | |
| Content grouping | Content group (content_group parameter) | |
| Site search term | Search term (view_search_results event) | Collected by enhanced measurement. |
| Transactions / Revenue | Transactions / Purchase revenue | Total revenue also includes subscription and ad revenue. |
| Product | Item name / Item ID |
GA4 calculates most metrics differently, so expect UA and GA4 numbers not to match one-to-one.
How to use this tool
Follow these steps to get the most out of the GA3 to GA4 Dimension Equivalency Mapper.
Enter your accurate data in the provided form fields.
Review all configuration options and settings.
Click the generate or proceed button to execute.
Copy, download, or implement the professional output.
In depth
Seamless Analytics Migration
Moving from Universal Analytics (GA3) to GA4 means a new, event-based data model. The mapping table shows the closest GA4 equivalent for common Universal Analytics dimensions and metrics.
Data Continuity
Ensuring your historical trends remain understandable in the new event-based model is key to consistent reporting for stakeholders and clients.
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