Enhanced conversions fix a measurement gap. When someone converts, your site sends Google a hashed version of first party data like an email address, and Google matches it to a signed in account. That recovers conversions that browser tracking alone would miss. Google describes the purpose as improving “the accuracy of your conversion measurement” and unlocking “more powerful bidding”.
The bidding half of that sentence is the real reason to care. Smart Bidding predicts the value of every click from past conversions. Feed it a more complete record and it makes better predictions. Feed it a partial one and it optimizes toward a version of your business that does not exist.
There are two versions, and mixing them up is the most common setup error.
What are the two types of enhanced conversions?
Google splits them into enhanced conversions for web and enhanced conversions for leads.
Enhanced conversions for web is for conversions that finish on your site. Someone buys, or submits a form, and at that moment your page sends hashed customer data alongside the conversion. It improves the accuracy of the conversion you were already recording.
Enhanced conversions for leads is for conversions that finish somewhere else. Someone fills in a form today and signs a contract three weeks later on a phone call. You take the email address captured at the form, hash it, and upload the later sale back to Google Ads. It creates a conversion record that never existed on your site at all.
| Enhanced conversions for web | Enhanced conversions for leads | |
|---|---|---|
| What it measures | A conversion on your site | A sale that happens after the lead |
| What it sends | Hashed data at the moment of conversion | Hashed data uploaded later |
| Who needs it | Ecommerce and any site based conversion | Any business with a sales process off the website |
| What it fixes | Under counting caused by browser limits | Optimizing toward leads instead of revenue |
| Where it is set up | Tag or Google Tag Manager | Tag plus an upload or CRM connection |
What this means for you: if you sell online, you want the web version. If you sell over the phone or through a sales team, the leads version is the one that changes your results, because it is the only way Google finds out which leads were worth anything.
Is my data safe?
The data is hashed before it leaves your site. Google’s description is that the data is sent “in a privacy safe way”, using hashed first party conversion data from your website tags or imported offline events.
Hashing turns an email address into a fixed length string that cannot be reversed back into the original. Google compares your hash to hashes of its own signed in accounts. Where they match, the conversion is attributed.
That said, this is still customer data leaving your systems, and consent rules apply. In the EU, UK and similar markets you need a lawful basis and a working consent mode setup. Check with whoever handles your privacy policy before you turn it on. That is not legal advice, it is just the sequence that avoids problems.
What is changing with offline conversion imports?
This is the part worth acting on now. Google states that from June 15, 2026, offline conversions import and enhanced conversions for leads uploads are migrated to the Data Manager API and blocked in the Google Ads API.
If your uploads run through a tool or a script that talks to the Google Ads API, that path is closing. Google’s documentation also notes that developer tokens which have not sent a request between January 2026 and June 2026 will not be allowlisted for legacy access.
Three practical steps:
- Find out how your offline conversions are currently uploaded. If it is a manual spreadsheet upload in the interface, you are fine. If it is an integration, ask the vendor what they are doing about Data Manager.
- Check whether your CRM has a native Google Ads connection. Many now do, and it is far less fragile than a custom script.
- If you are choosing between the older GCLID import and enhanced conversions for leads, choose the leads version. Google is steering that way and cites “durable, more accurate reporting” as the reason.
How is this different from the old GCLID method?
The old method depends on a click identifier. Google assigns a Google Click ID to the click, you store it with the lead, and later you send it back with the sale.
That works, but it has a weak link. The GCLID has to survive the entire journey from the landing page form, into your CRM, through your sales process, and back out again. In most businesses it does not. Somebody rekeys a lead, a form does not capture the hidden field, or the deal gets created manually and the ID is lost.
Enhanced conversions for leads uses the email address instead, which is far more likely to survive because your sales team actually needs it. That is the practical advantage: it rides on data your business already keeps carefully.
Will enhanced conversions change my reported numbers?
Yes, and you should expect conversion counts to go up when you turn them on. That is the point. But it means your before and after comparisons break at that date.
Mark the date clearly in your reporting. Comparing the month after to the month before will show an improvement that is partly measurement rather than performance, and anyone reviewing the account later deserves to know that.
Cost per conversion will usually fall for the same reason. If you report to a client or a board, explain this before the numbers land, not after.
What should be in place first?
Enhanced conversions improve the accuracy of conversion tracking. They do not create it. If the underlying conversion action is measuring the wrong thing, enhanced conversions will measure the wrong thing more accurately.
Get these right first:
- One distinct conversion action per meaningful outcome, not one action for every form on the site.
- A conversion that fires on the actual submission, not on a thank you page that is also reachable from the menu.
- Conversion value sent for anything with a price attached.
- Only the actions that matter marked as primary, since those are what Smart Bidding optimizes toward.
Our guide to Google Ads conversion tracking covers the full setup and the usual failure points.
Common questions
Do enhanced conversions work without consent mode?
In markets with consent requirements, you need consent mode configured correctly for the whole measurement setup to behave properly. Outside those markets it is less complicated, but a consistent setup is still better than a patchwork.
Can I use enhanced conversions with Google Tag Manager?
Yes. You can implement through the Google tag, through Google Tag Manager, or through the API depending on the version. Tag Manager is the most common route for the web version.
How long until I see a difference?
Conversion counts usually shift within days. The bidding improvement takes longer, because Smart Bidding has to accumulate enough of the new, more accurate data to change its predictions. Give it a full thirty days before judging.
Do I still need offline conversion imports if I use enhanced conversions for leads?
For most businesses, no. Enhanced conversions for leads is Google’s preferred replacement for the older GCLID based import, and it is more resilient. Keep the old method only if you have a specific reason it works better for you.
Does this help Performance Max?
It helps everything that relies on Smart Bidding, and Performance Max relies on it heavily. Since you cannot see or steer much inside Performance Max, the quality of the conversion signal is one of the few real levers you have. Our Performance Max guide covers the others.
Is this worth doing for a small account?
If you sell over the phone or through a sales process, yes, because the gap between leads and sales is where small accounts lose the most money. If everything converts on the website and volume is low, it matters less.
Where to go from here
Start with the reconciliation. Pull the conversions Google reported for the last ninety days and compare them to the leads that actually reached your CRM or inbox. If the two numbers are far apart, enhanced conversions are likely part of the answer, and the June 2026 API change is a reason to sort it out now rather than later.
Our Google Ads management page explains how we handle measurement setups, and our post on offline conversion tracking covers the sales side. You can get in touch if you want someone to check what your account is really counting.
