What is Cost per engagement (CPE)?
Cost per engagement is the total campaign spend divided by the number of engagements (likes, comments, shares, saves) generated, used to measure how efficiently a campaign drives audience interaction.
CPE is calculated as: total spend / total engagements. A $1,000 campaign that generates 5,000 engagements has a CPE of $0.20. Brands use CPE to compare creator performance across campaigns and tiers, independent of audience size.
Lower CPE is generally better, but context matters. A save or comment carries more weight than a like as a signal of intent. Brands running awareness campaigns might accept higher CPE if reach targets are met; conversion campaigns should tie CPE to downstream actions like clicks or purchases.
CPE varies heavily by niche and platform. Beauty and lifestyle content typically generates high engagement; B2B or finance content generates less but often with higher purchase intent. Normalize CPE comparisons within the same niche for accurate benchmarking.
Related terms
- Engagement rate
- Engagement rate is the percentage of a creator’s audience that interacts with their content, calculated as total engagements (likes, comments, shares, saves) divided by followers or reach, times 100.
- CPM (cost per mille)
- CPM, or cost per mille, is the cost a brand pays per 1,000 impressions or views of a piece of content, used to compare the efficiency of creator and ad placements.
- ROAS (Return on Ad Spend)
- ROAS is the revenue generated for every dollar spent on advertising or influencer marketing, calculated by dividing total revenue attributed to the campaign by total spend.
- Impressions
- Impressions are the total number of times a piece of content was displayed, counting every view including multiple views by the same user.
- Influencer rate
- An influencer rate is the fee a creator charges a brand for a specific piece of sponsored content, typically based on follower count, engagement rate, platform, content format, and usage rights.
More in Metrics
Cost per engagement (CPE) sits in the metrics part of the glossary. These terms come up in the same conversations and are worth reading alongside it.