- You need to open your Terminal. Either by going to your Applications>Utilities>Terminal or by simply using Spotlight Search (type Command + Space on your keyboard) then type Terminal and press enter.
- Type the below command into your Terminal and press enter:
The Terminal will display your serial number as shown below:
This command in macOS will also show you more details about your machine. These include Model, Chip, Memory, Total number of cores and more.