Definition

Enhanced Conversions is a Google Ads feature that supplements conversion tracking by sending hashed first-party customer data (email, phone, name, address) when a conversion occurs — improving attribution accuracy when cookies are limited.

Detailed Explanation

When a user converts, you send SHA-256 hashed email/phone alongside the conversion tag. Google matches this to signed-in Google accounts for more accurate attribution and smarter bidding.

Implementation via: Google Tag Manager (automatic form field detection), gtag.js, or Google Ads API. Must comply with privacy policies and obtain user consent where required.

Works alongside Consent Mode — limited data sent when consent denied, modeled conversions fill gaps.

Nepal Context

Nepali lead-gen sites (consultancies, clinics, real estate) collecting phone numbers on forms can significantly improve Google Ads conversion matching by enabling Enhanced Conversions in GTM — especially for users on mobile without persistent cookies.

Practical Examples

  1. GTM: Enable Enhanced Conversions in Google Ads tag → map email/phone form fields.
  2. E-commerce: Pass hashed email from checkout to conversion tag.
  3. Verify in Google Ads → Conversions → Diagnostics for match rate improvements.

Key Takeaways

  • Hashed first-party data improves conversion measurement.
  • Requires consent in GDPR/EEA regions.
  • Pairs with Consent Mode and server-side tagging.

Common Mistakes

  1. Sending unhashed PII — policy violation; must SHA-256 hash.
  2. No consent banner in EEA — legal and measurement risk.
  3. Not validating in diagnostics — assume it works without checking match rates.