Result
Cost per follower
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This calculation is for informational purposes only and does not replace advice from a qualified professional. Formulas and rates may not fit your exact situation — double-check the figures before making decisions.
How it is calculated
Cost per follower = promotion spend ÷ number of new followers. The same logic as CPC, CPM and CPL — the cost of one action is spend divided by the number of results obtained, except here the result is a new follower rather than a click or lead.
The metric says nothing about follower quality — whether they're active or not, real accounts or bots, the target audience or random people. A cheap follower isn't necessarily more valuable than an expensive one if they don't engage with content or become a customer.
To assess the real value of a follower base, look at cost per follower alongside Engagement Rate — a rising follower count without rising engagement often means the new audience was acquired in the wrong place.