Quick answer: Enhanced conversions is a Google Ads feature that sends hashed first-party customer data, such as an email address, along with your normal conversion tags. Google uses the hash to match more conversions to the ads that caused them. It comes in two types: enhanced conversions for web and enhanced conversions for leads.
Standard conversion tracking relies heavily on cookies. When a cookie is blocked, expires or sits on a different device, the conversion happens but the ad gets no credit. Enhanced conversions add a second way to make the match, using information the customer gave you directly, such as the email address typed into a checkout or lead form.
The data is hashed before it is sent. Google’s feature uses SHA256, a one-way hashing algorithm, on first-party customer data, so what reaches Google is a fingerprint and not the readable email address (Google Ads Help). It supplements your existing conversion tags and does not replace them.
Why enhanced conversions matter
Many real conversions go unreported because tracking cannot connect them to a click. Browser privacy limits, cookie consent choices and people switching devices all create gaps. Every unmatched conversion is a sale your campaigns earned but cannot see, which means smart bidding learns from incomplete data.
Here is an illustrative example. A Bengaluru D2C brand spends ₹3,00,000 on Google Ads with an average order value of ₹2,500:
| Metric | Before enhanced conversions | After enhanced conversions |
|---|---|---|
| Conversions reported | 380 | 430 |
| Cost per conversion | ₹789 | ₹698 |
| Revenue reported | ₹9,50,000 | ₹10,75,000 |
| ROAS | 3.2x | 3.6x |
The ads did not change. The brand simply recovered 50 conversions that were happening anyway but were not being credited. These numbers are only an illustration, not a benchmark, and the real uplift depends on your site, your audience and how much of your data can be matched.
The benefits in practice:
- More accurate reporting. Fewer conversions fall through the cracks.
- Better bidding signals. Google describes the feature as improving measurement and unlocking more powerful bidding (Google Ads Help).
- Less reliance on cookies. The match uses customer-provided data, which holds up better when cookies are limited.
- Works alongside your current setup. You do not need to rebuild your conversion tracking.
How enhanced conversions work
- The customer converts. They buy or submit a form, and give you an email address, phone number, name or address.
- Your tag captures the data. The conversion tag reads these fields from the page or from your data layer.
- The data is hashed. It is converted with SHA256 before leaving the browser or server.
- Google receives the hash. It is sent along with the usual conversion event.
- Google matches it. The hash is compared with signed-in Google accounts, and matched conversions are credited to the ad interaction.
- Only privacy-safe conversions are reported. Google states that it reports only privacy-safe conversions (Google Ads Help).
Enhanced conversions for web vs enhanced conversions for leads
| Attribute | Enhanced conversions for web | Enhanced conversions for leads |
|---|---|---|
| What it improves | Measurement of online conversions, such as purchases | Measurement of offline lead outcomes, such as closed sales |
| Where the data comes from | Your checkout or conversion page | Your lead forms, matched with imported offline conversions |
| What it needs | Customer data captured at conversion time | Customer data on the lead, plus CRM outcomes uploaded later |
| Best suited to | E-commerce, sign-ups, online bookings | Lead generation, education, real estate, B2B |
| Related page | This page | Offline conversion import |
If you run lead generation, the two work together. Enhanced conversions for leads is Google’s recommended starting point for new offline imports, as covered in our offline conversion import entry.
How to set up enhanced conversions for web
- Make sure basic conversion tracking already works. Enhanced conversions add to an existing conversion tag, so fix any basic tracking problems first.
- Turn the feature on in Google Ads. Open your conversion settings, expand the Enhanced conversions section and tick the option to turn on enhanced conversions for web.
- Choose your method. Google supports setup with the Google tag, with Google Tag Manager, or through the Google Ads API. The Google tag method needs the least effort and suits most advertisers (Google Ads Help).
- Map the customer data fields. Point the tag at the email, phone, name and address fields on your conversion page, or pass them from your data layer.
- Check the format. If you hash the data yourself, use hex-encoded SHA256 and clean the values first, for example trimming spaces and lowercasing emails. Never hash the same value twice.
- Validate the setup. Use the diagnostics in Google Ads or Tag Assistant to confirm that customer data is being received.
- Wait for the impact results. Google says about 30 days after successful setup are needed before impact results appear in your conversion action table.
Common mistakes
- Skipping consent. Customer data must be collected with valid consent and a clear privacy notice. A hashed email can still count as personal data under some privacy laws, so check your obligations, including India’s data protection rules, with your legal advisor.
- Hashing twice. Google’s tag hashes automatically in several setups. Sending data that is already hashed through a method that hashes again produces useless values.
- Sending messy data. Uppercase letters, extra spaces and wrongly formatted phone numbers lower the match rate.
- Mapping the wrong fields. A website redesign can change field names or page selectors and silently break the capture. Re-test after every site update.
- Sending only an email. Email is usually the most useful field, but supplying more data together, such as phone and name, can improve matching.
- Expecting miracles. Enhanced conversions only recover conversions where customer data exists and can be matched. They do not fix broken tags or poor campaigns.
- Judging results too soon. Impact numbers take weeks to appear, so avoid changing the setup repeatedly while you wait.
Frequently asked questions
What are enhanced conversions?
Enhanced conversions is a Google Ads feature that supplements your existing conversion tags by sending hashed first-party customer data, such as an email address, to Google. Google uses the hashed data to match more conversions to the ads that drove them, which improves the accuracy of your measurement.
What is the difference between enhanced conversions for web and for leads?
Enhanced conversions for web improves the measurement of conversions that happen online, such as purchases on your site. Enhanced conversions for leads uses hashed data from your lead forms together with imported offline lead conversions, such as a sale closed in your CRM.
Is customer data sent to Google in plain text?
No. The data is hashed with SHA256, a one-way algorithm, before it is sent to Google. Google receives the hash instead of the raw email address or phone number. A hashed identifier can still count as personal data under some privacy laws, so you still need valid consent and a clear privacy notice.
Which data can I send with enhanced conversions?
Google accepts first-party customer data such as email address, name, home address and phone number. Email is usually the most useful field, and sending more fields together can improve matching.
How long until I can see results from enhanced conversions?
Google says impact results can take about 30 days after a successful setup to appear in your conversion action table. In the meantime, use the diagnostics in Google Ads to confirm that the tag is receiving customer data correctly.
How Uginix helps
Uginix audits your existing conversion tags, sets up enhanced conversions through the Google tag or Google Tag Manager, maps and cleans the customer data fields, and tests the result before it affects your bidding. Our analytics and attribution work also covers consent setup and offline conversion imports. If your Google Ads conversions look lower than your real sales, our free growth audit can show where the gaps are.
Related terms
- Offline conversion import: sending CRM sales back to Google Ads, matched to the original click.
- Auto-tagging: the Google Ads setting that adds a click ID to your landing page URL.
- Attribution window: the time limit within which a click or view can earn credit for a conversion.
- Lookback window: how far back a tool searches for touchpoints before a conversion.
- View-through conversion: a conversion credited to an ad that was seen but not clicked.
Sources: Google Ads Help, About enhanced conversions, Google Ads Help, Set up enhanced conversions for web using the Google tag, Google Ads Help, Offline conversion imports FAQs.