It’s now possible to locate your PC’s serial number in the Settings app, but nothing beats a simple command-line query.

PowerShell Method (Modern)

Since the WMIC utility is now deprecated, the modern way to perform this query is with the Get-CimInstance cmdlet in PowerShell:

Get-CimInstance -ClassName Win32_BIOS | Select-Object SerialNumber

That’s the right way to do it if you’re running this query in a script. However, if you’re doing this by hand, that’s a lot to remember and type, so I’d recommend using an abbreviated version instead:

(gcim Win32_BIOS).SerialNumber

You can also use the following version, which returns more than just the serial number but is even easier to remember:

gcim win32_bios

Note: Some sources suggest using the Get-WmiObject cmdlet, but that’s deprecated too.

WMIC Method (Legacy)

This is hardcoded into my brain from years of manual Windows deployments, so even though it no longer works on recent Windows installations, I’ll include it here for posterity:

wmic bios get serialnumber

Remember: wmic.exe is deprecated and will eventually stop working.