PS> [System.Text.Encoding]::GetEncodings()|
>> Where-Object { $_.Name -match "utf" -and $_.CodePage -match "^(1\d+[^1]|[^1]\d+1)$" }|
>> Select-Object -Property DisplayName, Name, CodePage
DisplayName Name CodePage
----------- ---- --------
Unicode utf-16 1200
Unicode (UTF-32) utf-32 12000
Unicode (UTF-8) utf-8 65001
PS>