With Dictation, you can dictate text anywhere you can type it. Turn it on in Keyboard settings—your dictated utterances are sent to Apple to process your requests. A feedback window gauges your speaking volume and provides basic dictation controls.
Turn on Dictation
On your Mac, click the Apple menu > System Settings, then click Keyboard in the sidebar
Click Dictation on the right, then turn it on
If a prompt appears, click Enable
If you're asked if you want to improve Siri and Dictation, do one of the following: Share audio recordings or Don't share audio recordings
To dictate using another language, click the Language pop-up menu, then choose a language and dialect