How to Use Siri Knowledge - Siri User Guide

Siri Knowledge uses a combination of web searches, installed apps, and Wolfram Alpha to find the answers to a considerable variety of questions.

When asked a question, Siri reads out and displays the answer in a notification rather than returning a list of search results in Google. Usually, you’ll be able to tap on the notification for further details.

The results can occasionally be a little hit-and-miss, but for the most part are surprisingly accurate, especially in mathematics and general knowledge.

Siri Knowledge is built into Siri, so there is no need to download an app for it to work.

To begin using Siri Knowledge, activate Siri on your device using one of these methods.

iPhone/iPad

Press and hold the Side/Home button until Siri appears.
By saying “Hey Siri”.

Apple Watch

By saying “Hey Siri”.
By pressing and holding the Digital Crown.
By using Raise to Speak.

HomePod

By saying “Hey Siri”.
Press the top of HomePod.

Mac

Say “Hey Siri”.
Press the Siri button.
Use a keyboard shortcut.
Use Type to Siri.

Use Siri to access a wealth of general knowledge

Here are some examples of the broad range of questions you can ask:

Hey Siri, who is the Prime Minister of Australia?

As well as providing voice feedback, Siri will display the answer to your question in a notification. Tapping on it will reveal further information.

Hey Siri, when was the Brooklyn Bridge built?

Hey Siri, what’s the population of Canada?

Hey Siri, how far is it to the moon?

Hey Siri, what’s the most poisonous plant in the world?

If the search doesn’t return definitive results, Siri will offer a list of web links and topics it considers to be relevant to your query.

Use Siri to answer math questions

Siri can also answer math questions and perform complex calculations.

Hey Siri, what is the square root of 244?

Hey Siri, divide $65 by 3.

Use Siri to perform currency conversions

Siri Knowledge can convert currencies using live market data.

Hey Siri, what is $50 in Euros?

Hey Siri, how many US dollars in a pound?

Want to discover more about using Siri, Apple’s popular virtual assistant? We’ve written a helpful collection of tutorials full of techniques for using apps, dictation, using Siri Shortcuts, and a comprehensive beginner’s guide to activating and using Siri.