As you may have found out, when you change your account from USD to your local currency for reporting purposes you cannot change it back. All reports, click activity and so on is reported to you in your local currency.
This makes me wonder a few things... - Is Google doing a currency conversion on an earnings per click basis to account for fluctuations during the day? In watching report closely it appears that when a click is assigned an earnings value it does not fluctuate along with the changes in the day.
- Is Google converting from USD(which they are paid in) to other countries currency at all on a daily basis or are they arbitrarily choosing one day per month to calculate the moving average?
Canada's dollar, for example, was valued at better than 1:1 last month but has fallen to 0.95:1 this week yet adsense reports haven't changed to reflect that fact.
How do you even find out how much in USD you are making before Google converts it? There doesn't seem to be any way for a publisher to find out which is highly annoying at best.
edit: I did find this - https://support.google.com/adsense/answer/139846?hl=en which says they use the previous days rates for conversion purposes. Still, is there ANY way to see what rates were used? Even though my dashboard is reporting in my local currency I am actually earning in USD and would like some verifiable transparency into my earnings exchanges, if possible.