Find macOS Serial Number using Terminal

1. 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.
2. Type the below command into your Terminal and press enter:

system_profiler SPHardwareDataType

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.

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