# PowerShell: Get Disk Space (Local & Remote) > Check disk space with PowerShell using Win32_LogicalDisk: one-line readable GB output, remote computers via Invoke-Command, CSV export and free-space alerts. - Page URL: https://itinsighthub.com/guides/powershell-get-disk-space/ - Markdown variant of this page: append `?format=md` to any URL on this site or send `Accept: text/markdown`. - Full site index for AI assistants: https://itinsighthub.com/llms.txt - Full site export: https://itinsighthub.com/llms-full.txt # Get Disk Space with PowerShell One command returns every local drive with size, free space and free percentage — on your own PC or across a fleet of servers — using only built-in PowerShell. Published August 23, 2026 PowerShell ``` Get-CimInstance Win32_LogicalDisk -Filter "DriveType=3" | Select-Object DeviceID, @{n="SizeGB";e={[math]::Round($_.Size/1GB,1)}}, @{n="FreeGB";e={[math]::Round($_.FreeSpace/1GB,1)}}, @{n="FreePct";e={[math]::Round($_.FreeSpace/$_.Size*100,1)}} ``` Paste into PowerShell 5.1 or 7 and press Enter — no administrator rights needed. Columns: `DeviceID` (drive letter), `SizeGB`, `FreeGB`, `FreePct`. ## Why Win32_LogicalDisk and not Get-PSDrive? `Get-PSDrive` is the file-system view: it reports `Used` and `Free` for drives the provider maps, but no total size, no free percentage and none of the volume metadata a capacity report needs. [Win32_LogicalDisk](https://learn.microsoft.com/en-us/windows/win32/cimwin32prov/win32-logicaldisk) is the inventory view — the same class Disk Management reads — with `Size`, `FreeSpace`, label, file system and drive type. The `DriveType=3` filter keeps only local fixed disks, so the table skips DVD drives (type 5) and mapped network drives (type 4) automatically. Leave the filter off and you get everything; change it and you get exactly the drive class you asked for. Read-only and safe: querying Win32_LogicalDisk is a plain inventory read. It needs no elevation and none of the Windows Installer side effects that make Win32_Product a bad idea for audits. ## Drive types: local, network, mounted Swap the filter to change what the query returns: - `DriveType=3` — local fixed disks (the default used above). - `DriveType=4` — mapped network drives: `Get-CimInstance Win32_LogicalDisk -Filter "DriveType=4"`. - No filter — every drive type, including optical and removable media. Volumes without a drive letter of their own (for example a second volume mounted at `D:Data`) are not exposed by `Win32_LogicalDisk` — enumerate them with [Get-Volume](https://learn.microsoft.com/en-us/powershell/module/storage/get-volume), which reads the storage stack directly. ## Remote computers The same query runs against many machines at once with [Invoke-Command](https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/invoke-command). Nothing is installed on the targets — the command needs only WinRM (enabled by default on domain-joined servers) and local administrator rights on each machine: PowerShell ``` Invoke-Command -ComputerName srv01, srv02 -ScriptBlock { Get-CimInstance Win32_LogicalDisk -Filter "DriveType=3" | Select-Object DeviceID, @{n="SizeGB";e={[math]::Round($_.Size/1GB,1)}}, @{n="FreeGB";e={[math]::Round($_.FreeSpace/1GB,1)}}, @{n="FreePct";e={[math]::Round($_.FreeSpace/$_.Size*100,1)}} } -Credential (Get-Credential) ``` `-Credential (Get-Credential)` prompts once and reuses the credential for both hosts; drop the parameter when your signed-in session already has rights. For a larger fleet, loop a plain-text list — one host name per line — or any CSV/AD query: PowerShell ``` $servers = Get-Content .\servers.txt foreach ($s in $servers) { Invoke-Command -ComputerName $s -ScriptBlock { Get-CimInstance Win32_LogicalDisk -Filter "DriveType=3" | Select-Object PSComputerName, DeviceID, @{n="FreeGB";e={[math]::Round($_.FreeSpace/1GB,1)}} } } ``` For Active Directory, replace the first line with `$servers = Get-ADComputer -Filter * | Select-Object -ExpandProperty Name`. To eyeball results interactively, append `| Out-GridView` to the `Invoke-Command` output for a sortable grid (Windows-only). ## Export to CSV Pipe the one-liner into [Export-Csv](https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.utility/export-csv) for Excel, reporting or a capacity dashboard: PowerShell ``` Get-CimInstance Win32_LogicalDisk -Filter "DriveType=3" | Select-Object DeviceID, @{n="SizeGB";e={[math]::Round($_.Size/1GB,1)}}, @{n="FreeGB";e={[math]::Round($_.FreeSpace/1GB,1)}}, @{n="FreePct";e={[math]::Round($_.FreeSpace/$_.Size*100,1)}} | Export-Csv -Path .\disk-report.csv -NoTypeInformation ``` `-NoTypeInformation` keeps the file clean in Windows PowerShell 5.1; PowerShell 7 omits that header row by default, so the flag is a harmless no-op there. For a fleet-wide report, run the `foreach` loop above and pipe its collected output into `Export-Csv` once. ## Free-space-only checks and alerts When you need just the free number, trim the one-liner: PowerShell ``` Get-CimInstance Win32_LogicalDisk -Filter "DriveType=3" | Select-Object DeviceID, @{n="FreeGB";e={[math]::Round($_.FreeSpace/1GB,1)}} ``` For monitoring, filter before formatting — this flags every drive under 15% free, a common alert threshold: PowerShell ``` Get-CimInstance Win32_LogicalDisk -Filter "DriveType=3" | Where-Object { $_.FreeSpace / $_.Size -lt 0.15 } | Select-Object DeviceID, @{n="FreePct";e={[math]::Round($_.FreeSpace/$_.Size*100,1)}} ``` Adjust `0.15` to taste (0.1 = 10%). When a drive comes back low, the next step is finding what is filling it — see [find large files in Windows 11](https://itinsighthub.com/guides/find-large-files-windows-11/) for a built-in scan. ## Sort by free space To rank drives from the least free up, append `Sort-Object FreePct` — the calculated property exists by the time sorting runs: PowerShell ``` Get-CimInstance Win32_LogicalDisk -Filter "DriveType=3" | Select-Object DeviceID, @{n="SizeGB";e={[math]::Round($_.Size/1GB,1)}}, @{n="FreeGB";e={[math]::Round($_.FreeSpace/1GB,1)}}, @{n="FreePct";e={[math]::Round($_.FreeSpace/$_.Size*100,1)}} | Sort-Object FreePct ``` ## FAQ **Why does Get-PSDrive show different sizes?** Get-PSDrive reports the file-system provider's view: Used and Free for drives PowerShell maps, with no total size and no percentage, and it can omit volumes that Win32_LogicalDisk lists. The two classes read the same disks at different granularity; for capacity reports use Win32_LogicalDisk. **Is Win32_LogicalDisk safe to query?** Yes. It is a read-only inventory query that needs no elevation. The famous warning belongs to Win32_Product, which makes Windows Installer validate every MSI package and can trigger silent self-repairs; this class does none of that. **How do I check disk space on many servers at once?** Use Invoke-Command with a comma-separated -ComputerName list for a handful of hosts, or loop a servers.txt / CSV / AD list with foreach for fleets. WinRM must be reachable on the targets and you need local administrator rights there. **Does this work in PowerShell 7?** Yes. Get-CimInstance, Invoke-Command, Export-Csv and [math]::Round behave identically on Windows in PowerShell 5.1 and 7. The only cosmetic difference is that PowerShell 7 omits Export-Csv's type-info header row by default. ## More IT tools Explore the networking references and calculators: - [PowerShell: list installed software](https://itinsighthub.com/guides/powershell-list-installed-software/) — registry inventory, remote computers and CSV export. - [Find large files in Windows 11](https://itinsighthub.com/guides/find-large-files-windows-11/) — what to delete when a drive is low. - [IPv4 subnet calculator](https://itinsighthub.com/subnet-calculator/) — network, broadcast and host range for any CIDR block. - [Subnet cheat sheet](https://itinsighthub.com/subnet-cheat-sheet/) — printable mask table from /0 to /32. --- © 2026 ITInsightHub · [About](https://itinsighthub.com/about/) · [Contact](https://itinsighthub.com/contact/) · [Privacy](https://itinsighthub.com/privacy/)