An influencer campaign can be measured, and it should be. The problem is that people often look at the wrong numbers. Likes and followers feel good, but on their own they don't tell you whether the campaign worked. Let's go through the KPIs that actually matter and how to read results to understand if the money was well spent.
The objective comes before the KPI
There is no single set of metrics that fits everyone. Before measuring anything you need to know what you wanted to achieve:
- Make the brand known, that is awareness.
- Bring attention and traffic, that is consideration.
- Sell, generate leads or sign-ups, that is conversion.
Each objective has its own indicators. Measuring direct sales in a campaign built for awareness leads to the wrong conclusions.
Vanity metrics versus performance metrics
This is the most important distinction of all:
- Vanity metrics: likes, follower count, total impressions. They give the feeling that everything is going well, but on their own they say nothing about the result.
- Performance metrics: engagement rate, site traffic, conversions, cost per result. They tell you whether something concrete happened.
Content with lots of likes but zero clicks and zero sales entertained the audience, it didn't work for the brand.
KPIs by objective
To keep it simple, 3-4 indicators are enough, chosen by objective:
- Awareness: real reach (people reached, not inflated impressions), coverage on the target audience, growth in brand searches.
- Consideration: quality engagement (comments, saves, shares), site traffic, time spent on pages.
- Conversion: sales or leads generated, conversion rate, cost per acquisition.
How conversions are tracked
For a conversion to be attributed to the campaign, it has to be tracked from the start:
- Personalized discount codes for each creator, so you can see who brought orders.
- Tracked links (UTM) in stories and bio, to connect visits and sales to the single profile.
- Dedicated landing pages when you need to isolate the campaign's traffic.
Without these steps, results stay a feeling, not data you can decide on.
CPE and CPA: efficiency
Beyond the "how much", the "how much did it cost" matters:
- Cost per engagement (CPE) is total spend divided by the interactions generated. The lower it is, the more efficient the campaign is on engagement.
- Cost per acquisition (CPA) is spend divided by real results, sales or leads. It's the number that matters most to anyone looking at the return.
ROI is not just sales
Influencer marketing works on several levels: awareness, trust and authority, on top of direct sales. Part of the return is immediate and trackable, part matures over time. That's why ROI has to be read together with the objective: a launch campaign is judged on reach and perception, a sales one on CPA. Confusing the two is the mistake that makes people call "a failure" a campaign that was doing a different job.
How we report
At the end of a campaign we hand the brand a clear report: 3-4 KPIs tied to the objective, a comparison with the starting benchmarks and a recommendation for next time. No slides full of numbers that don't matter, only the ones that tell whether the brand got what it wanted and where it's worth pushing with paid. See how we work on the Services page.