Google Adwords CPC Estimator Tool
If you want to get a rough estimate of what you might make per click for running Adsense ads on certain terms on your site, check out the link below:
Put in the keywords you want to check then go to the pull down menu and select “Cost and add position estimates”. Pull in “100″ in the next box as Max CPC and hit the button.
That’ll generate a full list of estimated CPC amounts for certain positioning in Adwords, which you can use to extrapolate what you’d likely receive for each click for those terms on your pages running Google Adsense. The figures are a little bloated, as they’re an estimate of what it’d cost to be at the top of the ads, so it’s not showing what currently is being paid, just what it’d take you to be on top. Google also takes its cut, so you wouldn’t receive that full amount anyway. And for other reasons I’m not quite sure of, the figures for many keywords seem too high in general.
It’s a decent tool, though, to gauge in general how much you might make running Adsense ads on a site devoted to certain keywords and niches.
Google Adwords CPC Estimator Tool and related information can be found in Adsense, Adwords, Affiliate Toolbox