What it fixes
Browser and cookie restrictions mean Google cannot always tie a conversion back to the click that drove it, so reported conversions undercount. Enhanced conversions sends securely hashed first-party data from your site or CRM, which Google matches to signed-in users, filling the gap without exposing raw personal data.
Why it matters for bidding
More matched conversions means a cleaner signal for Smart Bidding, which optimizes to the conversions it can see. Thin or degraded measurement is a common hidden cause of rising CPA, so recovering conversions can improve delivery even without changing bids. It pairs with Consent Mode and a solid tagging setup; we cover the setup in enhanced conversions: the tracking upgrade most accounts skip.
Common questions
Is enhanced conversions privacy-safe?
It sends first-party data that is hashed before it leaves the browser or server, so Google receives a matching key rather than raw personal details. It should still be deployed with proper consent.
What does enhanced conversions improve?
It increases the number of conversions attributed to ad interactions, which both corrects reporting and gives Smart Bidding a stronger signal to optimize on.