- Link GA4 to Google Ads so Smart Bidding optimizes on real conversions, not just clicks.
- Install the Google tag, mark key events as conversions in GA4, then import them back to Google Ads.
- DebugView in GA4 lets you confirm conversions fire correctly before spending on paid traffic.
- UTM parameters keep attribution consistent across Google Ads and every other paid channel in GA4.
- Set primary conversions for bidding and secondary conversions for observation-only reporting.
- Coinis Advertise reporting tracks Meta campaigns live today, with Google Ads support on the roadmap.
GA4 connects to Google Ads in a handful of steps. Link the accounts, mark events as conversions, import them to Google Ads, and your campaigns start bidding on real outcomes. Here is exactly how to do it.
What is GA4 and Why Connect It to Google Ads?
GA4 is Google's current analytics platform. It replaced Universal Analytics as the standard measurement tool for websites and apps.
Understanding GA4 as your measurement foundation
GA4 tracks events natively. Purchases, signups, page views, video plays — all captured without separate hit types. You define what matters, and GA4 measures it. Per Google Analytics documentation, GA4 integrates directly with Google Ads to connect campaign click data with on-site behavior, giving you a complete picture of the customer journey.
Why linking GA4 to Google Ads matters for campaign performance
Google Ads Smart Bidding needs conversion data to work properly. Without it, your campaigns optimize for clicks rather than actual results. Link GA4 and your bidding strategies learn which ads drive purchases, leads, or whatever outcome matters to your business.
Step 1: Create or Access Your GA4 Property
Set up a new GA4 property in Google Analytics
Go to analytics.google.com. Click Admin in the lower-left corner. Under Property, click Create Property. Name it, pick your time zone and currency, then follow the setup wizard.
Already have a GA4 property? Skip straight to Step 2.
Install the Google tag on your website
GA4 uses the Google tag (gtag.js). After creating your property, go to Admin, then Data Streams, then Web. Add your domain and copy the Measurement ID. Install the tag via Google Tag Manager or paste it directly into your site's `
`.Confirm the tag is firing by checking the Realtime report in GA4 while browsing your own site.
Step 2: Link Your Google Ads Account to GA4
Navigate to Admin settings in GA4
Open GA4. Click Admin in the lower-left. Under the Property column, look for Google Ads Links.
Connect your Google Ads account via Google Ads Links
Click Google Ads Links, then Link. Choose the Google Ads account you want to connect. Enable auto-tagging when prompted. Auto-tagging passes click-level data from Google Ads to GA4 automatically, so you do not have to build that manually.
Verify the link is active
Return to the Google Ads Links list after saving. An active status confirms the connection is live. If it shows as pending, give it up to 24 hours before troubleshooting.
Step 3: Set Up Conversion Tracking in GA4
Mark key events as conversions
In GA4, go to Admin, then Events. Find the events that drive real business value — purchases, form submissions, signups. Toggle Mark as Conversion for each one. GA4 sends those flagged events to Google Ads automatically once the accounts are linked.
Use tag configuration or event settings
For events not tracked automatically, use Google Tag Manager to push custom events into GA4. Match your event names and parameters carefully. Consistency between GA4 and what Google Ads expects prevents attribution gaps.
Test your conversions before going live
GA4's DebugView lives under Admin. Use it to confirm each conversion event fires correctly. Trigger a real action on your site and watch it appear in DebugView before you spend a dollar on paid traffic.
Step 4: Enable Conversion Import to Google Ads
Import GA4 conversions back to Google Ads
In Google Ads, go to Tools and Settings, then Measurement, then Conversions. Click New Conversion Action. Choose Import, then Google Analytics 4 Properties. Select your GA4 property and the specific conversion events you marked.
Choose which conversions to track in campaigns
Set your most important conversions as primary. Smart Bidding optimizes on primary conversions only. Mark secondary conversions as observation — they appear in reports but do not influence bids.
Step 5: Track Your Google Ads Performance in GA4
View campaign data in GA4 reports
After linking, GA4 surfaces Google Ads campaign, ad group, and keyword data under Acquisition, then Traffic Acquisition. You will see sessions, conversions, and revenue broken down by campaign. This lets you compare Google Ads performance directly against other channels in one report.
Use UTM parameters for cross-platform consistency
Auto-tagging handles Google Ads attribution automatically. But adding UTM parameters to your ad URLs creates a backup. UTMs protect attribution if your site rewrites URLs in a way that strips the auto-tag. They also make your Google Ads data directly comparable to every other paid channel in GA4.
How Coinis Complements Your GA4 + Google Ads Setup
Centralize performance data with Advertise reporting
Coinis Advertise reporting is live for Meta campaigns today. Direct Google Ads reporting is on the roadmap. Once live, you will see Meta and Google campaign performance side by side without switching platforms. No more copying numbers between tabs.
Export GA4 insights with CSV for deeper analysis
GA4's built-in reports cover the basics. But cross-channel analysis often needs a spreadsheet. Export your GA4 data to CSV. Combine it with Coinis's CSV export from your Meta campaigns. One file, full cross-channel view, no manual stitching.
Or let Coinis do it.
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Frequently Asked Questions
Do I need Google Tag Manager to connect GA4 to Google Ads?
No. You can install the Google tag directly in your site's code. Google Tag Manager makes it easier to manage tags without touching code, but it is optional. The key requirement is having the Google tag active on your site before you link the accounts.
How long does it take for GA4 conversions to appear in Google Ads?
After you import GA4 conversions, allow up to 24 hours for them to appear in Google Ads reporting. New conversions may show a 'Recording' status before actual data populates.
Should I use GA4 conversions or Google Ads conversion tracking?
GA4 conversions are the recommended approach for most advertisers. They use a unified definition of conversion across your analytics and your ad campaigns. This reduces double-counting and gives Smart Bidding a cleaner signal to optimize from.
What are UTM parameters and do I need them if auto-tagging is on?
UTM parameters are tags you add to URLs that tell analytics tools where traffic came from. With auto-tagging enabled, Google handles this for Google Ads traffic automatically. Adding UTMs as a backup protects attribution if your site modifies URLs on landing. They are also essential for tracking Google Ads traffic in non-Google tools.