If you need to know the build number as well, click the version number to see it. The window that opens might look different from the example shown here, but it always includes the macOS name followed by its version number. Which computers can use the latest macOS versions? Which macOS is installed?įrom the Apple menu in the upper-left corner of your screen, choose About This Mac. Then find out whether it's the latest (newest, most recent) version. Use About This Mac to check the version of Mac operating system (macOS) installed on your Mac.
