How to Get Free Disk Space in PowerShell (With Example)

You can use the following syntax in PowerShell to get the free disk space on a specific drive:

Method 1: Get Free Disk Space in GB

Get-PSDrive C

This particular example will display both the free and used disk space in GB on the C drive.

Method 2: Get Free Disk Space as Percentage

Get-PSDrive C |
Select-Object @{Name="% Free Disk Space";
                Expression={$_.Free/1GB / ($_.Used/1GB + $_.Free/1GB)}}

This particular example will display the percentage of free disk space on the C drive.

The following examples show how to use each method in practice.

Example 1: Get Free Disk Space in GB Using PowerShell

We can use the following syntax to get the total free disk space in GB of the C drive on our computer:

Get-PSDrive C

The following screenshot shows how to use this syntax in practice:

PowerShell get free and used disk space

The output displays the following:

Note that we could use the following syntax if we would only like to retrieve the free disk space in GB:

(Get-PSDrive C).Free/1GB

The following screenshot shows how to use this syntax in practice:

PowerShell get free disk space in GB

Notice that the output displays only the free disk space in GB.

We can use the following syntax to get the total free disk space of the C drive as a percentage:

Get-PSDrive C |
Select-Object @{Name="% Free Disk Space";
                Expression={$_.Free/1GB / ($_.Used/1GB + $_.Free/1GB)}}

The following screenshot shows how to use this syntax in practice:

PowerShell get free disk space as percentage

From the output we can see that 57.59% of the drive is free disk space.

Note that we calculated this percentage by using the following formula:

Note: You can find the complete documentation for Get-PSDrive in PowerShell here.