Google wants as many people to use the web as possible, because at this point it can reliably count on more or less every internet user earning the company revenue. Having a decent connection is a big part of that, and while there are plenty of adequate speed tests available, apparently Google wants one right in the search interface. To that end, they're testing an integrated speed test created with the help of Measurement Lab.

You might not see the test right away - in fact, it seems to be live for only a tiny minority of Google search users at the moment. One of them was Twitter user Pete Meyers, who posted a quick screenshot of the tool running in his browser. It's nothing particularly interesting (nothing like the overly elaborate UI for SpeedTest.net, for example) but presumably it will get the job done.

Google notes on the tool itself and in new help documentation that the test will use under 40 megabytes of data for up, down, and latency info. That's a bit heavy, so you might want to avoid it if you're on a mobile data connection. As with all experimental features there's no guarantee that it will be rolled out to the wider userbase, but it seems fairly likely considering Google's comprehensive approach to integrated search tools.