Enhanced Conversions in Google Ads: How They Work, How to Set Them Up and Consent Rules

Cookie-based tracking loses part of the conversions it should count: browsers restrict cookies, users switch from phone to laptop, and some decline cookies. Enhanced conversions fill part of that gap with data you already collect in forms and checkouts. Google's help page About enhanced conversions describes the feature as a way to improve the accuracy of conversion measurement and to unlock more powerful bidding. This guide explains the mechanism, the two versions, the setup methods, consent in Europe and how to check that it works. For the basics of tags and conversion actions, start with our guide to conversion tracking.

What are enhanced conversions?

A standard Google Ads conversion tag records a conversion when it can link it to an ad click, mostly through a click identifier stored in a cookie. Enhanced conversions add a second matching key: user-provided data entered on your site, such as the email address typed at checkout.

1. The user clicks your ad while signed in to a Google account, then converts on your site.
2. Your conversion tag captures the email, phone, name or address entered in the form.
3. The data is hashed with SHA-256, a one-way algorithm, before it is sent to Google.
4. Google compares the hash with the hashed data of signed-in Google accounts and attributes the conversion to the ad interaction when they match.

Google states that it only reports privacy-safe conversions. Better counting has a direct effect on paid traffic management: Smart Bidding learns from the conversions it sees, so recovered conversions give the bidding algorithms more signal, and your reported cost per conversion gets closer to reality.

Enhanced conversions for web or for leads?

Enhanced conversions for leads replaces part of the classic offline import: you no longer need to store the Google click identifier in your CRM, because the hashed email or phone links the sale to the lead. This brings the closed deal, and its value, back into marketing attribution instead of stopping at the form submission. According to Google's help page on turning on enhanced conversions at the account level, enhanced conversions for web and for leads are now combined into a single on/off setting, and since April 2026 Google Ads accepts user-provided data from website tags, Data Manager and API connections (checked October 2026).

How do you set up enhanced conversions?

The setup starts in Google Ads: Goals, Settings, Enhanced conversions panel. You tick the box, accept the customer data terms (the Google Ads Data Processing Terms apply), then choose how the data will be sent.

Whatever the method, the data must be normalised before hashing, or matches will fail. Google's rules:

• Remove leading and trailing spaces and convert text to lowercase.
• Format phone numbers in E.164 (country code included, for example +33612345678).
• For gmail.com and googlemail.com addresses, remove the dots before the @.
• Use hexadecimal SHA-256 output when you hash the data yourself.

If you use Tag Manager, check the data with preview mode before publishing, and set up consistent UTM parameters on non-Google campaigns so that your analytics reports stay comparable.

What about consent and GDPR?

Enhanced conversions process personal data, even hashed. In the European Economic Area, the United Kingdom and Switzerland, Google requires advertisers to collect user consent and to pass it through consent mode. The consent mode reference states that the ad_user_data consent type is required for measurement use cases such as enhanced conversions.

A consent management platform certified by Google sends these signals for you; our comparison of cookie consent software covers the main options. Mention the use of hashed data for ad measurement in your privacy policy.

Which setup mistakes block enhanced conversions?

• No data when the tag fires: the conversion tag fires on a thank-you page where the email is no longer available. Capture the data on form submission, or push it to the data layer before the redirect.
• Unformatted data: capital letters, spaces or phone numbers without the country code produce hashes that match nothing.
• Old settings left in place: settings defined on a single conversion action take priority over the account-level setting, so Google advises removing the old ones after you switch to the account level.
• Consent banner not connected: a banner that collects consent but does not update consent mode leaves ad_user_data denied for every visitor.
• Double counting: a Google Ads tag and a conversion imported from Google Analytics both set as primary for the same action inflate the results.

Each of these errors is silent: campaigns keep running, only the measurement degrades.

How do you check that enhanced conversions work?

1. Diagnostics: in the conversion action, the enhanced conversions diagnostics report shows whether user-provided data is received and how often it is present.
2. Tag Assistant: run a test conversion and check that the user-provided data appears in the conversion hit.
3. Compare periods: after a few weeks, compare recorded conversions and cost per conversion with the period before activation, campaign by campaign.
4. Cross-check with your CRM or back office and with Google Analytics 4: Google Ads should get closer to your real sales, never exceed them.

Then recalculate your return with the ROAS calculator and your conversion rate: better measurement often changes which campaigns look profitable. A Google Ads audit should always check that enhanced conversions are active and receive data.

What is the equivalent on Meta?

Meta's equivalent is the Conversions API: your server sends events with hashed customer information (email, phone, name), and Meta recommends using it alongside the Meta Pixel. Meta rates the quality of the data you send with an Event Match Quality score out of 10, a useful check that Google Ads offers through its own diagnostics. Same logic, same consent obligations, different setup.

What enhanced conversions do not measure: organic search and AI

Enhanced conversions improve the measurement of paid clicks only. A growing share of journeys starts elsewhere: an organic result on Google, or an answer from ChatGPT, Gemini or Perplexity that names your brand without a click, a case known as zero-click attribution. These touchpoints do not appear in Google Ads reports, which tends to give paid search more credit than it deserves.

To complete the picture, measure the traffic that comes from AI assistants with our guide to measuring AI citations in Google Analytics, and track whether ChatGPT, Claude and Gemini cite your brand with Sorank's AI mention tracking. Sorank, our product, also publishes optimized articles automatically with its blog article generator, to build the organic and AI visibility that paid campaigns do not cover.

Key takeaways

Enhanced conversions are one of the most direct ways to recover lost conversions in Google Ads: turn them on at the account level, choose the most reliable setup method for your site, normalise data before hashing, send consent signals in Europe and check the diagnostics. Read our complete Google Ads guide to put the cleaner data to work, then measure the channels Google Ads cannot see with Sorank, from $49 per month with a 3-day free trial.