Google announced the addition of conversion estimates in the AdWords Keyword Planner.

The tool is now showing advertisers how varying bids may influence their campaigns’ performance differently for desktop and mobile devices. You can enter your conversion rates and values to see how changing your bids may impact estimated conversions, , ROAS, Avg CPA, and total conversion value for mobile and desktop.

“Let’s say you’re an online retailer gearing up for the busy shopping season with a cost-per-acquisition target of $25,” Google explains in a Google+ post. “In the example image below, you can see how varying your bids may influence your average cost-per-acquisition based on the conversion rates and values that you’ve entered.”

“Now let’s say you realize that people who search on mobile devices are twice as valuable to you as people searching on desktops,” it adds. “You’ll be able to see how changing the mobile bid adjustment will help you get the best ROI from your campaign.”

Google makes a point to note that campaign performance depends on a variety of factors, so you probably shouldn’t completely rely on this.

Google talks more about understanding Keyword Planner stats and traffic forecasts here.

Image via Google