Unique metrics published on Facebook reporting surfaces are metrics that count the number of people who took an action, rather than the number of actions taken.
These metrics are considered estimated and sampled, and depend on factors such as how many accounts are used by each person on Facebook Company Products. When a person has more than one account and takes actions (such as liking photos or adding comments) on the separate accounts, these actions may be counted separately even though they were made by the same person.
For example, this means that if someone saw a post while using their business Page and then switched to their personal profile and saw the same post, we may count this as 2 people reached. This also means that in cases where a person has connected their Facebook and Instagram accounts in Accounts Center, they will be counted as a single person for ads measurement and estimation purposes, and in cases where a person has not connected their Facebook and Instagram accounts in Account Center, their accounts will be counted as multiple accounts for ads measurement and estimation purposes.
Facebook has a number of systems in place to detect and remove fake accounts. In some cases, the presence of fake accounts may have some impact on unique metrics, such as estimated audience size.
Related content
See a list of metrics that are labeled as unique
- Unique Achievements Unlocked
- Unique Adds of Payment Info
- Unique Adds to Cart
- Unique Adds to Wishlist
- Unique App Activations
- Unique Checkouts Initiated
- Unique Clicks (All)
- Unique Content Views
- Unique Credit Spends
- Unique CTR (All)
- Unique CTR (Link Click-Through Rate)
- Unique Levels Completed
- Unique Link Clicks
- Unique Mobile App Achievements Unlocked
- Unique Mobile App Adds of Payment Info
- Unique Mobile App Adds to Cart
- Unique Mobile App Adds to Wishlist
- Unique Mobile App Checkouts Initiated
- Unique Mobile App Content Views
- Unique Mobile App Credits Spent
- Unique Mobile App Levels Completed
- Unique Mobile App Purchases
- Unique Mobile App Ratings Submitted
- Unique Mobile App Registrations Completed
- Unique Mobile App Searches
- Unique Mobile App Sessions
- Unique Mobile App Tutorials Completed
- Unique Purchases
- Unique Ratings Submitted
- Unique Registrations Completed
- Unique Searches
- Unique Tutorials Completed
- Cost Per 1,000 People Reached
- Estimated Audience Size
- Reach