Why This Matters: The Google Ads and GA4 Disconnect
You are running Google Ads campaigns. You are tracking conversions in Google Ads. You also have Google Analytics 4 set up on your website.
But they are not talking to each other. Your conversion data lives in two separate places. You cannot see the full picture of what is actually converting.
This is where importing custom conversions from Google Ads to GA4 comes in. It connects the dots.
What Is a Custom Conversion in Google Ads
A custom conversion in Google Ads is any action you track that is not a standard conversion. It might be a page view, a form submission, a video watch, a specific button click.
You define what counts as a conversion for your business. Then Google Ads tracks when people do that thing.
These conversions feed back into your campaign optimization. Google learns what matters to you and optimizes for it.
Why GA4 Matters For This
GA4 is your source of truth for user behavior. It tracks everything that happens on your website. Every click, every page view, every interaction.
If you can import your custom conversions from Google Ads into GA4, you see the whole picture in one place. You can analyze conversion behavior deeper than Google Ads alone allows.
The Difference Between Google Ads Conversion and GA4 Event
In Google Ads, you define a conversion. Someone performs an action. That action counts as a conversion.
In GA4, you define an event. Someone performs an action. That action triggers an event. You can use events to create conversions.
They are similar but not identical. Understanding the difference matters for setup.
Step 1: Make Sure Google Ads and GA4 Are Linked
First, your Google Ads account and GA4 account must be linked.
In Google Ads, go to Admin > Linked Accounts. Click Google Analytics.
Link your GA4 property. This is the foundation. Everything else depends on this.
If this is not done, stop and do it now. Nothing else will work without it.
Step 2: Verify Your Conversion Tracking Is Working
Before you import anything, make sure your conversions are actually being tracked in Google Ads.
Go to Google Ads > Tools > Conversions. You should see your conversion actions listed. Check if they have recent conversion data.
If you see zero conversions, your tracking is broken. Fix this first. Importing broken data to GA4 does not help.
Step 3: Access GA4 Admin Settings
In Google Analytics 4, go to Admin (bottom left).
Under the Property column, find Conversions.
This is where you will import your Google Ads conversions.
Step 4: Import From Google Ads
In GA4 Conversions, look for Import Conversions From Google Ads.
Click it. GA4 will show you all the conversion actions available in your linked Google Ads account.
Select which conversions you want to import. You do not have to import all of them. Just the ones that matter for your GA4 analysis.
Step 5: Understand Conversion Matching
GA4 will try to match Google Ads conversions to GA4 events. The matching depends on how your tracking is set up.
If your Google Ads conversion is based on a page view (someone lands on a thank you page), GA4 can match it to the page_view event.
If your Google Ads conversion is based on an event (someone clicks a button), GA4 needs you to have set up that same event.
If the events do not match, the import will not work.
Step 6: Setting Up Events in GA4 If Needed
If your Google Ads conversion does not have a matching GA4 event, you need to create one.
This requires either:
– Adding tracking code to your website (GTM or direct GA4 tag)
– Using GA4 event creation features
– Working with a developer to implement proper tracking
This is the step that trips up most people. They think importing automatically creates the events. It does not.
Understanding Conversion Attribution
When you import conversions, you need to understand how GA4 attributes them. It uses last-click attribution by default.
This means the last touchpoint before conversion gets credit. If someone clicks an ad, then finds you through organic search, then converts, organic gets the credit.
You can change attribution models in GA4. Go to Admin > Attribution Settings to see your options.
The Data Lag Issue
Imported conversions do not appear in GA4 immediately. There is usually a 24-48 hour lag.
Do not panic if you import conversions and do not see them in GA4 for a day. This is normal.
Check back the next day. They should be there.
Troubleshooting: Conversions Not Showing Up
Your Google Ads account is not linked to GA4. Link them first.
Your GA4 events do not match your Google Ads conversions. Create the matching events.
Your conversion tracking in Google Ads is broken. Fix that first.
You are looking at the wrong GA4 property. Make sure you are looking at the right one.
You imported conversions but are looking at data from before the import. Imported conversions apply to future data, not past.
Using Imported Conversions for Analysis
Once imported, you can use these conversions in GA4 reports.
Go to Reports > Conversion. You will see your imported conversions listed.
Analyze which channels drive conversions. Which landing pages convert best. Which user segments convert.
This analysis is deeper than what Google Ads alone provides.
Comparing Google Ads Conversion Count to GA4
Your Google Ads conversion count and GA4 conversion count will not be identical. Do not panic.
This happens because of:
– Attribution differences
– Tracking differences
– Data processing differences
– Time zone differences
Small discrepancies (5-10%) are normal. Large ones (50%+) indicate a tracking problem.
Using This Data For Campaign Optimization
Now that GA4 has your conversion data, you can see the full customer journey.
A user might see your ad, leave without converting, return through organic search, and convert. GA4 shows you this journey. Google Ads alone does not.
Use this insight to improve your campaigns. Adjust targeting based on what GA4 reveals about your converting users.
Advanced: Creating Calculated Conversions
GA4 lets you create calculated events. These are conversions based on formulas or conditions.
For example, maybe a conversion is someone who views a product page AND adds it to cart AND submits a form. That is a calculated conversion.
This is beyond basic importing but powerful for complex conversion definitions.
Important: Double Checking Your Google Ads Conversion Setup
Before importing, audit your Google Ads conversions. Make sure they make sense for your business.
A lead is a conversion. A purchase is a conversion. A newsletter signup is a conversion. Define these clearly.
Bad conversion definitions make the imported data useless.
Documentation and Records
Document which conversions you imported and why. Keep notes on your conversion definitions.
This helps if you change things later or if someone else needs to understand your setup.
Regular Audits
Once a month, check that conversions are still flowing from Google Ads to GA4.
Website changes sometimes break tracking. Regular audits catch these problems early.
Final Checklist
Google Ads and GA4 linked? Check.
Conversion tracking working in Google Ads? Check.
Matching events created in GA4? Check.
Conversions imported to GA4? Check.
Data appearing 24-48 hours later? Check.
You are good. You now have proper conversion tracking across both platforms. Use it.
