How to Set Up Enhanced Conversions in Google Ads (Step by Step)

If your Google Ads conversion numbers feel low compared to actual sales or leads, cookie loss is a big part of why. Enhanced conversions recovers a meaningful share of it by matching your first-party data — email, phone — against signed-in Google accounts, privately and after hashing.

It's free, it takes an afternoon, and it usually improves both reporting accuracy and Smart Bidding performance. Here's the step-by-step, plus how to confirm it actually works, because a silent misconfiguration is the common outcome.

TL;DR

Enhanced conversions hashes email/phone in the browser (SHA-256) and matches it to Google accounts to recover conversions cookies would drop.

Set it up through Google Tag Manager (most control) or the Google tag directly.

The make-or-break step: the customer data must be present on the page where the conversion tag fires.

Confirm success in the diagnostics tab — don't assume it worked.

What it actually does (and the privacy part)

When a conversion fires, enhanced conversions takes the customer data you already collected — email, phone, name, address — hashes it with SHA-256 in the browser before it's sent, and Google matches those hashes against hashed signed-in account data. Matched conversions that cookies alone would have missed get counted and attributed. Google never receives the raw values, and you're using data the customer gave you directly.

The practical payoff: more complete conversion data, which means more accurate reporting *and* better Smart Bidding, since bidding is only as good as the conversions it can see.

Before you start

Accept the customer-data terms in Google Ads (Goals → Settings → Customer data terms).

Know where your customer data lives on the page — the email field, the order confirmation object, a data layer variable. This is what you'll map.

Have Google Tag Manager running if possible; it's the cleanest path.

Step 1: Turn on enhanced conversions

In Google Ads: Goals → Conversions → Settings → Enhanced conversions. Turn it on, confirm the terms, and choose your setup method — Google Tag Manager is what I recommend for anything beyond a trivial site.

Step 2: Map your customer data (the step that matters)

This is where most setups silently fail. Enhanced conversions can only hash data it can find on the page where the conversion fires.

In Google Tag Manager:

1. Open your Google Ads Conversion Tracking tag (the one firing on your thank-you/confirmation page).

2. Expand Enhanced Conversions and set "Include user-provided data."

3. Choose how to supply it:

Manual configuration — map GTM variables to email, phone, etc. Create variables that read the exact form fields or dataLayer values.

Code / dataLayer — push a user_data object on conversion (best for Shopify/checkout, where order email is reliably available).

Automatic collection — GTM scrapes the page for email/phone fields. Easiest, least reliable; verify carefully.

4. Match the data to the page. The confirmation page must actually contain the email or phone. A thank-you page that shows only "Thanks!" with no customer data has nothing to hash — this is the #1 failure. If needed, expose the value through the dataLayer, session state, or a server-rendered variable — never in the page URL, since URLs leak raw PII into browser history, server logs, and analytics referrers before Google ever hashes it.

If your GTM foundation isn't set up yet, start with the GTM for Google Ads guide first.

Step 3: Publish and test

1. Use GTM Preview mode to load a real conversion and confirm the conversion tag fires *with* user-provided data attached (Preview shows the enhanced-conversions fields).

2. Check the values are populated, not blank — blank means your variable mapping is wrong.

3. Publish the container.

Step 4: Confirm it's working (don't skip this)

Within 24–72 hours, check Goals → Conversions → your action → Diagnostics / Enhanced conversions status. You want to see "Recording enhanced conversions" or a healthy match rate. If it reports missing data or errors, your field mapping or page data is the problem — go back to Step 2.

Working when: diagnostics shows recording within ~48 hours, and user data reliably reaches the conversion page. Broken when: the confirmation page has no email/phone to read, consent mode blocks the tag, or fields are mapped to the wrong variables.

Enhanced conversions vs offline conversions

They solve different problems and pair well. Enhanced conversions recovers online conversions lost to cookie decay — best for ecommerce and instant online leads. Offline conversion tracking feeds back what happened *after* the click, in your CRM — essential for lead-gen sales cycles. Serious lead-gen accounts run both; the offline half is covered in the offline conversion tracking guide. Either way, verify the result — reported numbers still won't perfectly match your store, and that's expected, as explained in why the platform numbers don't match.

Want it set up and verified properly?

Enhanced conversions is easy to switch on and easy to get silently wrong. Confirming it's genuinely recovering conversions — not just toggled on — is part of my conversion tracking work. Send your setup through the project fit page and I'll check whether yours is actually recording.

Related reading:

How to Set Up Offline Conversion Tracking

GTM and Google Ads Setup

Google Ads Conversion Tracking