KPIs (Key Performance Indicators) in influencer marketing are measurable metrics used to evaluate the success of content or campaigns.

In other words, KPIs show how well a post, video, or collaboration has performed. Companies and influencers use them to understand whether their goals have been achieved – such as increasing reach, driving sales, or boosting engagement.

Common KPIs on platforms like Instagram, TikTok, or YouTube include reach, likes, comments, shares, clicks, and watch time. Another important metric is the conversion rate, which measures how many people take a desired action after seeing the content, such as making a purchase or signing up.

For brands, KPIs are especially important because they help measure return on investment (ROI) – in other words, whether a collaboration with an influencer was worth it. For influencers, KPIs provide valuable insights to optimize their content and better align it with their target audience.

In short, KPIs are the foundation for making success in influencer marketing visible and comparable.