Google calculates your impression rpm as the revenue generated from the ad (impression revenue + click revenue) and then divides that by the number impressions divided by 1000.

Effectively doing the opposite of your calculation.

You can see click information in the clicks report.

Ian, thank you very much for taking the time to answer my question.

I would love to be able to understand what variables you are using and I am not sure.

You wrote, "Google calculates your impression rpm as the revenue generated from the ad (impression revenue + click revenue) and then divides that by the number impressions divided by 1000."

Impression RPM = (Impression revenue + Click revenue) / 1000 ?

So two questions:

1. Is Impression RPM something different from Impression revenue? I think understanding the difference is what I am having problems with. ( I tried to Google the topic but other than some advertisers pay for impressions while others only pay for clicks I could not find any information.)

I use the Performance Report/Common Reports/Ad Units section for my variables. Is there any other report that shows me the click revenue (other than dividing Estimated Earnings by clicks)?

I would like to understand the pay for impressions versus the pay for clicks.

Again, thanks in advance for any help.

Is the clicks report in a different report?

RPM == Revenue per 1000 impressions, it is not specific to the type of revenue. If you go to the "Click" report the RPM will account for the revenue earned from ads that pay exclusively based on CPC. If you go to the "Views" report RPM will account for revenue earned exclusively from ads that pay based on impressions. You will notice that RPM reported in each of these reports is different, but comparable. The "Overview" report shows the combined RPM of all the different monetization methods (CPC, CPM, Active View etc...).

If you want to know how much you are earning per click you should refer to the CPC number.
If you want to know if you are earning more for views or for clicks, (on average without taking into consideration volume or number of impressions) then compare click RPM to view RPM.
On the other hand if you want to know whether click or views makes more money on a dollar for dollar basis then just compare the compare the estimate earning value in each of the reports.

Thank you very much to both of you! I finally found the "Click" and "View" tabs and discovered so much more information. Your responses to my post are making all the difference! I learned a lot!

Thanks!

Excellent! Just bear in mind that g is the middleman. Your income actually comes from advertisers who have agreed that g will do the accounting and payouts. g is not the advertiser (in most cases).