MetricKPI Compass StandardApprovedInternal
Unique Reach
An estimated count of distinct people exposed to an ad, deduplicated across supported devices, formats, sites, apps, or networks.
Definition
Unique Reach extends basic cookie or device counts by estimating distinct people across multiple advertising environments. Google Ads describes it as the total number of people shown an ad across supported devices, formats, sites, apps, and networks.
Formula
Estimated distinct people exposed
Platform variations
How platforms implement this metric — external definitions, not competing internal ones. They often count differently, so review before combining.
Sources
- Google Ads HelpVerified 2026-08-04
- Google Ads Help (secondary)