Google Text-to-speech powers applications to read the text on your screen aloud.

For example, it can be used by:

• Google Play Books to “Read Aloud” your favorite book

• Google Translate to speak translations aloud so you can hear the pronunciation of a word

• TalkBack and accessibility applications for spoken feedback across your device

• ... and many other applications in Play Store

To use Google Text-to-speech on your Android device, go to Settings > Language & Input > Text-to-speech output. Select Google Text-to-speech Engine as your preferred engine.

Note, on many Android devices, Google Text-to-speech is already turned on, but you can update to the latest version here.