Display Disk Size and FreeSpace in GB - powershell

Question

Is there one line of code that will display free-size and disk-space of your logical disk in gb instead of mb? I tried doing some research but I couldn't find one liner, I did give this an attempt which was to divide it by 1GB, but that didn't work, how can I accomplish this?
gwmi win32_logicaldisk | Format-Table DeviceId, MediaType,Size,FreeSpace /1GB

Answer 1

Try calculated properties. I would also add [math]::Round() to shorten the values:
gwmi win32_logicaldisk | Format-Table DeviceId, MediaType, #{n="Size";e={[math]::Round($_.Size/1GB,2)}},#{n="FreeSpace";e={[math]::Round($_.FreeSpace/1GB,2)}}
n stands for name and e for expression. You could use the full names too, but it's a waste of space if you're writing multiple calculated Properties.

Answer 2

When performing any arithmetical calculation, it should be put in { }.
gwmi win32_logicaldisk | Format-Table DeviceId, MediaType,Size, {$_.FreeSpace /1GB}
You can read more on syntax from Microsoft Powershell Library

Answer 3

I'd like to provide an alternate/updated answer. (As of Powershell 5 at least, probably version 3.)
Just use Get-Volume
https://learn.microsoft.com/en-us/powershell/module/storage/get-volume
Example:
> get-volume
DriveLetter FriendlyName FileSystemType DriveType HealthStatus OperationalStatus SizeRemaining Size
----------- ------------ -------------- --------- ------------ ----------------- ------------- ----
FAT32 Fixed Healthy OK 451 MB 496 MB
C OSDISK NTFS Fixed Healthy OK 65.23 GB 474.3 GB
X Transfer_Shuttle NTFS Fixed Healthy OK 37.65 GB 48.68 GB

Answer 4

I have same issue and I want get KB,MB,GB,TB,PB on Server with Windows Server 2008 to 2016,
then I google many information to build a function:
function ConvertDoubleToBytes([double]$srcDouble){
if([Math]::Floor([Math]::Log($srcDouble,1024)) -eq 0){
$resn = ([Math]::Ceiling($srcDouble/([math]::pow(1024,([Math]::Floor([Math]::Log($srcDouble,1024)))))).ToString() + " Bytes")
} elseif ([Math]::Floor([Math]::Log($srcDouble,1024)) -eq 1){
$resn = ([Math]::Ceiling($srcDouble/([math]::pow(1024,([Math]::Floor([Math]::Log($srcDouble,1024)))))).ToString() + " KB")
} elseif ([Math]::Floor([Math]::Log($srcDouble,1024)) -eq 2){
$resn = ([Math]::Ceiling($srcDouble/([math]::pow(1024,([Math]::Floor([Math]::Log($srcDouble,1024)))))).ToString() + " MB")
} elseif ([Math]::Floor([Math]::Log($srcDouble,1024)) -eq 3){
$resn = ([Math]::Ceiling($srcDouble/([math]::pow(1024,([Math]::Floor([Math]::Log($srcDouble,1024)))))).ToString() + " GB")
} elseif ([Math]::Floor([Math]::Log($srcDouble,1024)) -eq 4){
$resn = ([Math]::Ceiling($srcDouble/([math]::pow(1024,([Math]::Floor([Math]::Log($srcDouble,1024)))))).ToString() + " TB")
} elseif ([Math]::Floor([Math]::Log($srcDouble,1024)) -eq 5){
$resn = ([Math]::Ceiling($srcDouble/([math]::pow(1024,([Math]::Floor([Math]::Log($srcDouble,1024)))))).ToString() + " PB")
}
return $resn
}
And I use it:
Get-WmiObject -query "Select * from win32_logicaldisk " | Select-Object DeviceID,#{n="FreeSpace";e={ConvertDoubleToBytes($([double]::Parse($_.FreeSpace)))}},#{n="Size";e={ConvertDoubleToBytes($([double]::Parse($_.Size)))}},#{n="Useage Percent";e={$([Math]::Ceiling((1-$($([double]::Parse($_.FreeSpace))/$([double]::Parse($_.Size))))*100)).ToString() + " %"}}
Will print like this:
DeviceID FreeSpace Size Useage Percent
-------- --------- ---- --------------
C: 36 GB 100 GB 65 %
D: 294 GB 600 GB 52 %
E:
F: 279 GB 600 GB 54 %
G:
H: 500 GB 500 GB 1 %

Answer 5

This works great.
$disks = get-wmiobject Win32_LogicalDisk -computername $computer -Filter "DriveType = 3"
foreach ($disk in $disks) {
$letter = $disk.deviceID
$volumename = $disk.volumename
$totalspace = [math]::round($disk.size / 1GB, 2)
$freespace = [math]::round($disk.freespace / 1GB, 2)
$usedspace = [math]::round(($disk.size - $disk.freespace) / 1GB, 2)
$disk | Select-Object #{n = "Computer Name"; e = { $computer } }, #{n = "Disk Letter"; e = { $letter } }, #{n = "Volume Name"; e = { $volumename } }, #{n = "Total Space"; e = { ($totalspace).tostring() + " GB" } }, #{n = "Free Space"; e = { ($freespace).tostring() + " GB" } }, #{n = "Used Space"; e = { ($usedspace).tostring() + " GB" } } | FT
}