Which Mac OS Version Do I Have Installed?


To check which macOS version is installed: 

From the Apple menu apple icon in the upper left corner of your screen, choose “About This Mac.” You should see the macOS name, such as macOS Sequoia, followed by its version number. If you need to know the build number as well, click the version number to see it.  If you need to update this version, you can click “Software Update” and follow the prompts.

Which macOS version is the latest?  Which macOS version should I have installed?

When a major new macOS is released, it gets a new name, such as macOS Sequoia. 

If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos. 

If you are not running the most recent OS from Apple, you may experience issues with web pages and apps.  We recommend visiting the App Store to download the most recent version.

Below you will find a list of recent version, with the most current version listed first: