Google quietly announced on Google+ that they've upgraded the Keyword Planner tool to support conversion estimates.
Now you can use a slider to see how varying bids may influence your campaigns’ performance differently for desktop and mobile devices. Specifically you can enter in your conversion rates and values and Google will show you in this tool the estimated conversions, ROAS, average CPA, and total conversion value for both desktop and mobile campaigns.
Here is a picture of it in action:
Here is the practicality of this, as per Google:
Let’s say you’re an online retailer gearing up for the busy shopping season with a cost-per-acquisition target of $25. 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. You’ll be able to see how changing the mobile bid adjustment will help you get the best ROI from your campaign.
Advertisers/developers are already excited about this added feature and want it built into the APIs.
Forum discussion at Google+.
