🔍 Why the Numbers Look Different
It is completely normal to see different traffic figures across Site Metrics, Google Analytics 4 (GA4), and Google Search Console (GSC). Each tool measures a different thing using a different methodology. They are not designed to match — and comparing them directly will almost always produce mismatched numbers.
Here is a quick summary before we go deeper:
- Site Metrics — shows estimated organic traffic modelled from keyword rankings and click-through-rate data.
- GA4 — records actual sessions or page views tracked by the Google Analytics JavaScript tag on your site.
- GSC — counts clicks on your URLs as logged directly in Google Search.
📈 What Does Site Metrics Actually Measure?
The traffic figure you see in Site Metrics is a keyword-based organic traffic estimate. It is not pulled from your GA4 property or your GSC account. Instead, Search Atlas calculates it by:
- Identifying the keywords your site ranks for in organic search.
- Applying the average click-through rate (CTR) for each ranking position.
- Multiplying that CTR against the estimated monthly search volume for each keyword.
- Summing the results across all tracked keywords to produce a total estimated visit count.
This model is widely used across the SEO industry and is designed to give you a broad directional view of your organic search potential — not a precise session count.
📉 Why GA4 Shows a Lower Number
GA4 tracks real user sessions using a JavaScript snippet installed on your website. Its count is lower than the Site Metrics estimate for several common reasons:
- Ad blockers and privacy tools — a significant portion of users block analytics scripts entirely, so their visits are never recorded in GA4.
- Bot and crawler filtering — GA4 attempts to filter non-human traffic, removing visits that the Site Metrics model may still factor in.
- Sampling and attribution windows — GA4 uses its own session definition and attribution logic, which can reduce the reported count.
- Tag implementation gaps — if the GA4 tag is missing from certain pages, those page views are simply not counted.
🖱️ Why GSC Shows an Even Lower Number
GSC clicks represent only the moment a user clicks your link in Google Search results. This number is almost always the lowest of the three because:
- It counts clicks, not sessions — one user clicking two different results generates two clicks but potentially one session.
- It only covers Google Search — Bing, DuckDuckGo, and other search engines are excluded.
If you need further assistance, open the chat widget in the bottom-right corner of the platform and type human teammate to be connected with a member of our team.
Data source: SEMrush, a third-party SEO data provider. Update frequency: Updated periodically based on SEMrush's own crawl and index cycles, not in real time. Also includes a real-world numeric example: Site Metrics 2,978 vs GA4 727 vs GSC (partial).