eCPM stands for “Effective Cost Per Thousand of Impression”. The eCPM can be computed by dividing the Adsense Revenue by the Adsense Impression and the quotient will be multiplied by 1000. The process can be presented by the mathematical formula:

eCPM = (AR / AI) * 1000

Where: AR stands for Adsense Revenue and AI stands for Adsense Impression.

In other words, the Adsense eCPM is totally dependent to the Adsense CTR and CPC.

By just considering the formula given above, we could already say that the higher in Revenue and lower impression will result to higheCPM. And on the other hand, the lower the Revenue and higher impression will result to low eCPM.
But, let’s say that the impression is constant in two different periods but the Revenue varies from one period to the next period.
For example, the generated impression is 1000 in day-1 and in day-2; and the revenue is $10 in day-1 and $5 in day-2.
By substituting the data to the formula given above, the result will be $10 eCPM in day-1 and $5 eCPM in day-2.
The result simply tells us that if you could not increase the number of impression of the Adsense ads, you need to increase the eCPM of Adsense by simply working for the increase of the Adsense Revenue. However, in a constant impression, Adsense Revenue greatly depends on the CTR and CPC of Adsense.


How to increase the Adsense eCPM?

In other words  for you to increase the eCPM what you need to do is:

1. Increase the CPC of the Adsense ads. Just imagine if a click in your Adsense is worth $10, which means that in just 1 click in your Adsense you already earn $10. Now, what if there are 3 clicks generated in your Adsense. Well.. That’s really very interesting especially if your Adsense CPC is as high as $10 per click because in just 3 clicks you already have earned $30.

2. Increase the Adsense CTR. Again, imagine what would be your income if your Adsense have CPC of $10 per click but no one click your Adsense ads. So, you earn nothing even if your Adsense has better CPC.That simply tells you that the Adsense CTR really affects your Adsense income. The more your Adsense receive clicks, the more you earn from Adsense.

3. Avoid being Smart Priced by Google Adsense. Smart Pricing is another thing that makes your Adsense earning to drop. Google Adsense implement Smart Pricing to protect its advertisers and help them increase the ROI.


4. Remove ads from pages with very low eCPM (not necessarily CTR though)

5. limit the number of adblocks per page.

6. make the content on the pages as easy to target as possible with all the usual “spider food” SEO stuff, page titles, page names, descriptive original content,etc.

7. try a 336×250, above the fold, centered in the content, or a leaderboard

8. blend the ads in as naturally as possible.