SharePoint PowerShell: Get Web ID (GUID) with PowerShell

Use this small script to get the ID or GUID of a site(web) in your SharePoint environment.
Don't forget to change the webURL to your site URL!

Script:

# Starting the script

Add-PSSnapin Microsoft.SharePoint.Powershell -ErrorAction SilentlyContinue

$webURL = "http://mySPServer/sites/mySite"

$web = Get-SPWeb -Identity $webURL

$web.ID