At $199 the new seven-inch tablet will cost less than half the cost of the market-leading iPad.
Google hopes it will help it gain ground against Apple, Amazon.com, and Microsoft.
The new tablet, which is being made for Google by Taiwan-based Asus, will run Jelly Bean, an update to the Android operating system that is only expected to make minor changes.
Gartner research suggests the tablet market may grow to nearly 120 million units this year.
Google has its own store for apps called Google Play, but does not have anything like Amazon's service.
