Knowing how much storage space is available on your Windows computer is important for managing files, installing applications, downloading updates, and troubleshooting performance problems.
When a drive becomes nearly full, you may receive a low disk space warning, and some Windows operations or applications may not work as expected.
Windows provides several built-in ways to check storage space. You can use Settings for a detailed overview, File Explorer for a quick check, and Disk Management when you need more information about your drives and partitions.
What Is Storage Space?
Storage is the permanent space used to store your operating system, applications, documents, photos, videos, downloads, and other files.
Common storage devices include:
- SSDs
- Hard disk drives (HDDs)
- External hard drives
- USB flash drives
- Memory cards
Storage capacity is commonly measured in GB or TB.
For example, a computer might have a 512 GB SSD or a 1 TB hard drive.
The advertised capacity and the capacity displayed by Windows may differ slightly because manufacturers and operating systems calculate storage differently.
Method 1: Check Storage Space in Windows Settings
Windows Settings provides one of the easiest ways to see how your storage is being used.
Step 1: Open Settings
Press:
Windows + I
Step 2: Open System
Select System.
Step 3: Select Storage
Click Storage.
Windows will display information about the storage available on your computer.
You can see:
- Total storage usage
- Available storage
- Installed applications
- Temporary files
- Documents
- Pictures
- Videos
- Other files
This view is particularly useful because it not only tells you how much space remains but also helps identify what is consuming it.
Method 2: Check Storage Space Using File Explorer
File Explorer provides the quickest way to check the available space on a drive.
Step 1: Open File Explorer
Press:
Windows + E
Step 2: Open This PC
Select This PC from the navigation panel.
Under Devices and drives, you will see your available drives.
Windows displays a storage bar beneath each drive showing how much space is being used.
You can usually see the remaining space and total capacity by selecting or opening the drive.
This method is convenient when you only want a quick overview.
Method 3: Check Drive Properties
You can also view storage information through a drive’s properties.
Step 1: Open File Explorer
Press:
Windows + E
Step 2: Select This PC
Find the drive you want to check.
Step 3: Open Properties
Right-click the drive and select Properties.
A window will display information such as:
- Used space
- Free space
- Capacity
- File system
The visual storage chart makes it easy to see how much of the drive is currently occupied.
Method 4: Check Storage Using Disk Management
Disk Management provides more detailed information about physical drives and their partitions.
Step 1: Open Disk Management
Press:
Windows + X
Then select Disk Management.
You can also search for Create and format hard disk partitions from the Start menu.
Step 2: Review Your Drives
Disk Management displays your connected storage devices and their partitions.
You can see information about:
- Disk capacity
- Partitions
- Drive letters
- Unallocated space
- File systems
- Partition status
This tool is particularly useful when a drive or partition is not appearing normally in File Explorer.
Be careful when making changes in Disk Management. Creating, deleting, or formatting partitions can result in data loss.
Method 5: Check Storage Using Command Prompt
If you prefer using Windows commands, Command Prompt can provide storage information.
Step 1: Open Command Prompt
Search for Command Prompt from the Start menu.
Step 2: Enter the Command
Type:
wmic logicaldisk get size,freespace,captionPress Enter.
Windows can display the drive letter, total size, and available free space.
On newer Windows installations where WMIC is unavailable, use File Explorer, Settings, or PowerShell instead.
Method 6: Check Storage Using PowerShell
PowerShell provides another built-in method.
Open PowerShell and enter:
Get-PSDrive -PSProvider FileSystemWindows will display information about available file-system drives, including their used and free space.
This method is particularly useful for users who are comfortable with command-line tools.
How to Check Which Files Are Using the Most Space
Knowing the available storage is only the first step.
If your drive is almost full, you also need to determine what is consuming the space.
Windows Storage settings can categorize storage usage into areas such as:
- Installed apps
- Temporary files
- Documents
- Pictures
- Videos
- Music
- Other files
You can use these categories to identify areas that may contain unnecessary data.
For example, a large number of downloaded videos or unused applications could consume significant storage.
How to Check Free Space on the C Drive
The C: drive is commonly the primary Windows system drive.
To check its available space:
- Press Windows + E.
- Select This PC.
- Find Local Disk (C:).
- Check the storage bar.
For more detailed information:
Settings → System → Storage
Then select the system drive if the option is available.
What Happens When Storage Space Is Low?
A nearly full drive can cause several issues.
You may experience:
- Low disk space warnings
- Difficulty installing applications
- Problems downloading files
- Windows update difficulties
- Reduced space for temporary files
- Slower system performance in some situations
Windows and applications need working space for temporary files and other operations.
For that reason, it is a good idea to avoid filling your system drive completely.
How to Free Up Storage Space
If your drive is almost full, start by identifying what is consuming the most space.
You can consider removing:
- Unused applications
- Temporary files
- Old downloads
- Large files you no longer need
- Unnecessary installation files
- Files in the Recycle Bin
You can also move large personal files to another storage device or cloud storage when appropriate.
Avoid deleting system files manually unless you know exactly what they are used for.
If you specifically receive a Windows low-storage warning, see How to Fix Low Disk Space Warning on Windows for targeted troubleshooting.
Storage Space vs. RAM
The Storage and RAM are two different types of computer memory.
It holds your files and applications permanently, even after the computer is turned off.
RAM temporarily holds information that Windows and applications are actively using.
For example:
- A 512 GB SSD refers to storage capacity.
- 16 GB RAM refers to system memory.
If you want to check your computer’s RAM, see How to Check RAM on Windows.
Understanding this difference is important when troubleshooting performance problems.
SSD vs. HDD Storage
Windows can use different types of storage devices.
SSD
Solid-state drives have no moving mechanical parts and are generally much faster than traditional HDDs.
HDD
Hard disk drives use spinning magnetic disks and are commonly available in larger capacities at lower costs.
When checking storage space, Windows shows the capacity and available space regardless of whether the drive is an SSD or HDD.
If you are troubleshooting performance, however, knowing the type of storage device can be useful.
How Much Free Storage Should You Keep?
There is no single percentage that applies to every computer.
However, keeping some free space available is generally preferable to filling the system drive completely.
You need available space for:
- Windows operations
- Temporary files
- Application data
- Updates
- Downloads
- Future installations
If your drive is consistently almost full, consider removing unnecessary files, moving personal data, or expanding your storage capacity.
Quickest Ways to Check Storage Space
For a detailed overview:
Windows + I → System → Storage
For a quick check:
Windows + E → This PC
For drive and partition information:
Windows + X → Disk Management
For command-line information:
PowerShell → Get-PSDrive -PSProvider FileSystem
These built-in tools are usually sufficient for checking available storage on Windows.
Final Thoughts
Knowing how to check storage space on Windows makes it easier to manage your files and identify potential storage-related problems.
For most users, Settings → System → Storage provides the most useful overview because it shows both available space and the categories consuming storage.
Use File Explorer for a quick check and Disk Management when you need more detailed information about drives and partitions.
If your system drive is nearly full, identify what is consuming the space before deleting anything, and avoid removing unfamiliar Windows system files.
FAQ’s
How do I check how much storage my Windows PC has?
Open Settings → System → Storage for a detailed view. You can also open File Explorer → This PC to see your drives and their capacities.
How do I check free space on my C drive?
Open File Explorer → This PC, locate Local Disk (C:), and check the storage indicator. You can also select Settings → System → Storage for more details.
Why is my Windows storage full?
Your drive may be full because of applications, personal files, downloads, temporary files, Windows data, or other stored content. Windows Storage settings can help identify the categories using the most space.
Does low storage make a computer slow?
Low storage can contribute to performance problems, particularly when the system drive has very little free space. However, slow performance can also have other causes.
Can I check storage without installing software?
Yes. Windows includes Settings, File Explorer, Disk Management, Command Prompt, and PowerShell for checking storage.
