The "Adsense Calculator" tool is a web-based application designed to help website owners estimate their potential earnings from Google AdSense ads. AdSense is a program from Google that allows website owners to display ads on their websites and earn money when visitors click on those ads.

The Adsense Calculator takes into account various factors such as the number of page views, click-through rate (CTR), cost-per-click (CPC), and the percentage of revenue share with Google, to provide an estimate of how much a website owner can earn per day, month or year.

Users can input their website's data such as the number of page views and the estimated CTR and CPC, and the calculator will provide an estimate of their potential earnings. The tool also offers the option to adjust the percentage of revenue share with Google, as well as the type of ad format (text, display, or both), to obtain more accurate calculations.

Overall, the Adsense Calculator tool can be a useful resource for website owners who want to get an idea of how much they could potentially earn with Google AdSense, and to help them optimize their website to maximize their earnings.