MetricKPI Compass StandardApprovedInternal
Reach
The number of distinct people, accounts, households, or devices exposed to an ad at least once during a defined period.
Definition
Reach is a deduplicated exposure metric. The platform determines the identity unit and estimation method used to count unique audience members who received at least one qualifying impression.
Formula
Distinct qualifying exposed identities
Platform variations
How platforms implement this metric — external definitions, not competing internal ones. They often count differently, so review before combining.
Compare all 3 platform definitions side by side →Sources
- TikTok Ads HelpVerified 2026-08-04
- TikTok Ads Help (secondary)