What Are Enhanced Conversions? How Do They Strengthen Google Ads Measurement?
Enhanced Conversions is a feature designed to measure your conversion data more accurately in a world where cookies are increasingly restricted.
Enhanced Conversions is a feature designed to measure your conversion data more accurately in a world where cookies are increasingly restricted. It strengthens measurement by securely matching user data collected on your website with Google.
How Do Enhanced Conversions Differ from Standard Conversion Tracking?
How Does Standard Google Ads Conversion Tracking Work?
Standard tracking relies on browser cookies. When a user declines cookies, or when cookies are deleted because of browser restrictions such as ITP, the conversion cannot be matched to the ad and data is lost.
What Additional Signal Do Enhanced Conversions Provide?
Enhanced conversions take the first-party data collected from the user (email, phone, and so on), "hash" it and send it to Google. Google matches that data against its own session information, so the conversion can be tied back to the ad even when cookies are missing.
What Are Google Ads Enhanced Conversions For?
They improve measurement accuracy: By recovering lost conversions, they make your campaign reports more realistic.
They feed smart bidding: Better quality data helps Google's bidding strategies (ROAS, CPA) learn more effectively.
They are privacy-compliant: The data is anonymised (hashed) with the SHA256 algorithm before it is sent.
Which Data Is Used for Enhanced Conversions?
The system can use the following data:
Email address (the most effective signal)
Phone number
First and last name
Home address (postcode, city, country)
Who Are Enhanced Conversions Suitable For?
E-commerce sites: They perform well because an email address or phone number is collected during the purchase steps.
Companies collecting leads: They strengthen conversion tracking because personal data is captured at the form stage.
Anyone dealing with low data quality: They suit any business that sees incomplete conversions in reports because of browser restrictions.
How Do You Set Up Enhanced Conversions in GTM?
Step 1: Turn On User-Provided Data Capabilities
In your Google Ads conversion tag settings, enable the option to include user-provided data.
Step 2: Enable Enhanced Conversions in Google Ads
Go to the Google Ads panel and turn the feature on under conversion settings, in the "Enhanced Conversions" section.
Step 3: Configure User Data Inside the Google Tag
In GTM, define the "User-provided data" variable inside your Google tag.
Step 4: Choose the Right Data Source
Choose whether to collect the data automatically or through the Data Layer. Using the Data Layer gives you more reliable results.
Step 5: Define the user_data Parameter
In GTM, add the variables holding the user information (email, phone) to the tag as the user_data parameter.
Enhanced Conversions Data Collection Methods
Automatic collection: The Google tag scans the form fields on the page itself (simple, but there is room for error).
Data Layer: Passing the data directly through the data layer your developer has added to the site (the most reliable method).
API integration: Transferring the data server to server using the Google Ads API.
How Enhanced Conversions and Consent Mode Relate
The two work together. Consent Mode determines whether the user has agreed to share data, while Enhanced Conversions improve how well that data matches the ad once consent is given. They are two critical measurement technologies that complement each other.
Frequently Asked Questions
Do Enhanced Conversions expose personal data?
No. The data is encrypted (hashed) with SHA256 on the GTM side before it reaches Google. Google then matches that hashed data against the hashed data in its own database.
Do I need a form on my site to set this up?
A contact form is not a requirement; you can also collect the user's contact details (email, phone, and so on) at the sign-up, login, purchase or checkout stages of your website. Any step where the data is provided by the user and available on your site is enough for the setup.
How will enhanced conversions affect my campaigns?
Because the number of measured conversions increases, Google's learning process speeds up and your campaigns start producing more optimised results.