What is eCPM Calculator?
eCPM (Effective Cost Per Mille) measures the ad revenue generated per 1,000 impressions, regardless of the buying method (CPC, CPA, or CPM). It standardizes earnings for comparison.
How it Works
eCPM = (Total Earnings / Total Impressions) * 1,000.
Step-by-Step Guide
- 1 Earnings
- Total ad revenue.
- 2 Impressions
- Total ad views.
- 3 Calculate
- Derive eCPM.
Example
Input: $500 Earned, 200k Imps
Result: $2.50 eCPM
FAQ
eCPM vs CPM?
CPM is the cost to the advertiser; eCPM is the effective earnings of the publisher.
eCPM vs RPM?
RPM is usually per 1,000 *pageviews*, eCPM is per 1,000 *ad impressions*.
Why is my eCPM low?
Low viewability, poor placement, or low-value audience geography.
How to improve?
Optimize ad placements and target Tier 1 countries.
Does fill rate affect it?
Indirectly; unfilled impressions lower your overall yield.
Conclusion
eCPM is the ultimate metric for comparing the performance of different ad networks or units. A higher eCPM means your inventory is more valuable.