Like Siri on your iOS devices, Siri on your Mac is your intelligent personal assistant that helps you multitask and get things done just by asking. For example, while you work on a document, you can ask Siri to send a message to your coworker saying that the document is on the way—without having to stop what you’re doing.
Here are just a few examples of the many things that you can ask Siri to do:
- “Show the PDFs in my Downloads folder”
- “How much free space do I have on my Mac?”
- “Play the top 40 jazz songs”
- “What’s the weather in Lake Tahoe?”
- “Show me all of the files I shared with Cecilia last week”
- “Search the web for images of the Eiffel Tower”
- “Find tweets from José Bautista”
- “FaceTime Victoria”
- "Add Laura to my 10 AM meeting”
- “How do you spell broccoli?”
- “Show my photos from yesterday”
- “What time is it in Monterrey, Mexico?”
Ask Siri a question
Click the Siri icon 
in the menu bar or Dock. Siri asks "What can I help you with?" Then say what you need. 
To learn about Siri's capabilities on the Mac, just ask Siri "What can you do?"
Click the Siri icon again or click
in the search result to ask another question. Siri remains open on your desktop in front of any other apps, or you can close the window with a swipe.
To ask Siri a question, you can instead hold down both the Command (⌘) key and Space bar until Siri asks, "What can I help you with?"
If you're using a Mac mini or a Mac Pro, connect a microphone for Siri to hear your requests. Choose Apple menu () > System Preferences and click Sound.
Then select your microphone in the Input tab.
Ask Siri to find files on your Mac
Siri makes it easy to find files on your Mac, using various criteria. For example, you can ask Siri to search for all the documents that you opened this week. Then you can ask Siri to refine your results to just the ones with the word “annual” in the title.
Keep Siri results where you can find them
You can keep important information from Siri—like sports schedules, Twitter feeds, files that are related to your big project, and much more—right in Notification Center so you can access it easily. Just click 
at the top of your Siri results. They'll even stay up to date, so you always know where to find game times, trending topics, or important documents.
Search and drag Siri results
You can ask Siri to search for information, and then drag the results into a window or application on your desktop. For example, you can ask Siri to find an image on the web, and then you can drag it into your Pages document. Or you can ask Siri to find a restaurant, then drag the location from Maps into an invitation.
Edit your Siri request
To edit your request instead of making a new request, double-click your words in the Siri window, then enter your changes from the keyboard.
Double-click your words to edit them.
Then press Return to search again.
Change Siri settings
Go to System Preferences and click Siri. Or you can just ask Siri to open Siri Preferences.
In Siri Preferences, you can:
- Turn Siri on or off
- Change the language or dialect that Siri expects you to use
- Change the gender and dialect of the voice that Siri uses when speaking to you
- Turn off voice feedback so that Siri shows results silently
Get help
- Siri on Mac requires macOS Sierra.You can also use Siri on iPhone, iPad, or iPod touch, Apple Watch, and Apple TV.
- If Siri can't connect to the network or asks you to try again in a little while, check your Internet connection.
- If Siri appears not to hear you speak, check your microphone selection in Siri preferences. If necessary, test with a different microphone, such as the microphone in your Apple Earphones.
- If Siri appears to hear you but not understand you, make sure that your language and dialect is selected in Siri preferences.