Home  ›  Google Ads Course  ›  Measurement

Enhanced Conversions & Offline Conversion Import: Track What Really Matters

How to recover the conversions cookies lose, and how to feed real revenue back into Google Ads so bidding optimises toward deals — not just form fills.

VDBy Vikas Disale·9 min read
Quick answer

Enhanced conversions send hashed first-party data (email, phone) with your conversions to recover ones lost to cookie limits, improving measurement accuracy in a privacy-safe way. Offline conversion import (now best done as enhanced conversions for leads) sends downstream CRM events — qualified leads, closed deals with their value — back into Google Ads, so Smart Bidding optimises toward revenue rather than just form fills. Both make automated bidding far more accurate.

📢
2026 updateFrom June 2026, enhanced conversions for web and for leads merge into a single on/off setting — you no longer pick an implementation method. And from 15 June 2026, offline and lead uploads move to the Data Manager API; the legacy Google Ads API path is blocked. If you run a custom offline-import integration, plan that move now.
1Why this matters

Bidding is only as good as the conversions you feed it

Smart Bidding optimises toward the conversions you report. If those conversions are incomplete — missing the ones cookies couldn’t track, or stopping at “form fill” when the real value is a closed deal — the AI optimises toward the wrong thing. Enhanced and offline conversions fix both gaps.

Free tool

Which conversion setup do you need?

Pick what you’re trying to measure and we’ll point you to the right feature.

2Enhanced conversions (for web)

Recover the conversions cookies lose

Standard conversion tracking leaks: cookie consent rejections, browser restrictions and redirects all cause real conversions to go unrecorded. Enhanced conversions close that gap by sending hashed first-party data — email, phone — alongside each conversion, securely (SHA-256), so Google can match it to a signed-in user even when the cookie is gone.

🔒
Privacy-safe by designThe data is hashed in the browser before it’s sent, so Google only ever sees a scrambled value. Turn it on under Goals → Conversions → Settings → Customer data use.
3Offline conversions (for leads)

Bid toward revenue, not just form fills

For any business where a lead becomes a sale later — a quote, a call, a closed deal — the form fill isn’t the real outcome. Offline conversion import sends those downstream CRM events (qualified lead, deal won, with the deal value) back into Google Ads, so bidding can chase pipeline instead of cheap leads.

It works by capturing the GCLID (Google’s click ID) as a hidden field on your form, storing it against the lead in your CRM, and pushing it back when the lead progresses. The modern, recommended version — enhanced conversions for leads — adds hashed email as a second match key, so it still attributes even when the GCLID is lost.

⚠️
Starting fresh? Skip the legacy path.Google now recommends enhanced conversions for leads over plain GCLID-only import. Don’t build the old version in 2026 only to upgrade it immediately — and make sure auto-tagging is ON.
Key takeaways
  1. Smart Bidding only optimises as well as the conversions you report to it.
  2. Enhanced conversions send hashed first-party data to recover cookie-lost conversions.
  3. Offline conversion import feeds CRM outcomes (deals, value) back into Google Ads.
  4. Enhanced conversions for leads is the modern, recommended version of offline import.
  5. From June 2026, web and leads merge into one setting and uploads move to Data Manager.
?Frequently asked

Enhanced & offline conversion FAQs

What are enhanced conversions?
A feature that sends hashed first-party data, such as email and phone, alongside your conversions so Google can match them to signed-in users and recover conversions lost to cookie restrictions, in a privacy-safe way.
What is offline conversion import?
A way to send downstream events from your CRM, such as a qualified lead or closed deal with its value, back into Google Ads, so bidding can optimise toward real revenue instead of just form fills.
What is the difference between enhanced conversions for web and for leads?
Enhanced conversions for web improve measurement of on-site actions, while enhanced conversions for leads is an upgraded offline import that matches CRM outcomes back to the click using GCLID and hashed data.
Is enhanced conversions data private?
Yes. First-party data is hashed in the browser using SHA-256 before it is sent, so Google only receives a scrambled value, never the raw email or phone number.
Do I still need the GCLID for offline conversions?
Including the GCLID maximises accuracy, but enhanced conversions for leads adds hashed email as a second match key, so it can still attribute conversions when the GCLID is lost.
What is changing for conversions in June 2026?
Enhanced conversions for web and leads combine into a single on/off setting, and offline and lead uploads move to the Data Manager API, with the legacy Google Ads API path being blocked.
→Keep learning

Related lessons

Conversion Tracking Basics
read →
Smart Bidding Strategies
read →
VD
Vikas Disale
Author · Digital Marketing

Vikas Disale is a digital marketer with around a decade of hands-on experience running and teaching paid search. He builds practical, example-led Google Ads training for business owners and marketers. More about Vikas →

Bidding on incomplete data?

Missing conversions quietly mislead Smart Bidding. I can help you set up enhanced and offline conversions properly.

Get in touch →
Scroll to Top