Where to find your storage information

Your PC stores information about how much disk space you have and how much you are using. On Windows, the fastest way is to open File Explorer, right-click on your C: drive (or whichever drive you want to check), and select Properties. A window will show your total capacity and how much space is currently in use. On a Mac, click the Apple menu, select About This Mac, then click Storage to see a breakdown of what is taking up room.

You can also check storage from your system settings. On Windows 11, go to Settings > System > Storage. On Windows 10, go to Settings > System > Storage. On a Mac, go to System Settings > General > Storage. These locations show your total space, used space, and often a visual bar that makes it straightforward to see at a glance whether you are running low.

Key Takeaways

  • Right-click your C: drive in File Explorer and select Properties to see total and used storage in seconds on Windows.
  • Windows Settings and Mac System Settings both break down storage by category — apps, documents, photos, videos — so you can see what is taking the most room.
  • If you are running low on space, check your Downloads folder and Recycle Bin first, as both often hold files you no longer need.
  • Third-party tools like WizTree (Windows) and Disk Diag (Mac) show you exactly which folders and files are largest, making it easier to decide what to delete.

Understanding storage categories in Windows Settings

Windows Settings breaks your storage into categories so you can see what is consuming the most space. Open Settings > System > Storage and you will see sections for Apps & features, Documents, Pictures, Videos, Music, and Other. Each category shows how much space it is using. This layout helps you spot whether your photos folder or your installed programs are the main culprit.

The Other category often contains temporary files, cache, and system files that Windows uses but you do not directly interact with. If Other is taking up a large amount of space, you can use Disk Cleanup (search for it in the Start menu) to remove temporary files safely. Be cautious about deleting anything in Other unless you understand what it is — system files are necessary for Windows to run.

Checking storage on a Mac

On a Mac, go to System Settings > General > Storage. The storage window shows your total capacity at the top and breaks down usage by category: System, Apps, Photos and Videos, Audio, Documents, and Other. A colored bar at the top visualizes how full your drive is. Unlike Windows, the Mac storage view is more compact, but it gives you the same essential information about what is taking up room.

If you want more detail about which specific files or folders are largest, use the built-in Finder. Open Finder, click on your drive in the sidebar, then use the search tool to sort by file size. You can also use third-party tools like Disk Diag or CleanMyMac to get a visual map of your entire drive and see exactly which folders are consuming the most space.

Finding large files and folders

If your storage is nearly full and you need to free up space quickly, you need to know which files and folders are largest. On Windows, read and open WizTree (it is free). Point it at your C: drive and it will scan and show you every folder ranked by size. The largest folders usually include your Documents, Downloads, Pictures, or installed programs. WizTree makes it obvious which single folder is worth cleaning out first.

On a Mac, open Finder, click on your drive, then use Command+F to search. In the search window, click on the Kind dropdown and select Other, then scroll down and select File Size. Set it to search for files larger than 100 MB or 500 MB to find the biggest individual files on your drive. You can also use the Finder's built-in sort by size: open a folder, press Command+J to open View Options, and set Sort by to Size.

Checking your Downloads and Recycle Bin

Your Downloads folder and Recycle Bin (Trash on Mac) are often the easiest places to free up space without losing anything important. Open File Explorer on Windows, navigate to Downloads, and sort by date modified. Files at the top are the oldest — these are often installers, old documents, or things you downloaded months ago and forgot about. Select the ones you no longer need and delete them. On a Mac, open Finder, click Downloads in the sidebar, and do the same.

After you delete files, empty your Recycle Bin on Windows (right-click it on the desktop and select Empty Recycle Bin) or empty Trash on Mac (click Finder > Empty Trash). Until you do this, deleted files still take up space on your drive. Clearing out your Downloads folder and Recycle Bin can often free up several gigabytes with no risk, since these are temporary holding areas.

Using built-in disk cleanup tools

Windows includes a built-in tool called Disk Cleanup that removes temporary files, old system files, and cache without affecting your programs or documents. Search for Disk Cleanup in the Start menu and open it. Select your C: drive, then check the boxes next to Temporary files, Recycle Bin, and Temporary internet files. Click OK and Windows will delete these safely. This usually frees up 1 to 5 gigabytes depending on how long it has been since you last cleaned.

On a Mac, there is no single built-in cleanup tool like Disk Cleanup, but you can manually delete cache and temporary files. Open Finder, press Command+Shift+G to open Go to Folder, type ~/Library/Caches, and press Enter. You can delete cache folders here, though be careful not to delete anything you do not recognize. For most users, the easiest approach on Mac is to use a third-party tool or straightforward move large old files to external storage.

Moving files to external storage

If you have a lot of files you want to keep but your drive is full, moving them to an external hard drive or USB drive is faster than deleting. Connect your external drive to your PC, open File Explorer or Finder, and drag folders like old Photos, Videos, or Documents to the external drive. Wait for the transfer to complete, then delete the originals from your PC. This frees up space on your main drive while keeping your files safe.

External drives are inexpensive — a 1 or 2 terabyte USB drive costs between $50 and $100 and can hold years of photos and videos. This is a good option if you regularly run out of space but do not want to delete anything. Make sure to keep the external drive in a safe place, since losing it means losing those files.

Frequently Asked Questions

How much storage do I actually need?

Most people need 256 GB to 512 GB for everyday use — documents, photos, and programs. If you work with video, music production, or large design files, aim for 1 TB or more. If you mostly use cloud storage like Google Drive or OneDrive, you can get by with less. Check what you actually store on your drive before buying a new PC.

What happens if my drive gets completely full?

Your PC will slow down and may refuse to install updates or save new files. Windows needs some free space to create temporary files while running programs. If you hit 100 percent capacity, free up at least 10 to 20 percent of your total storage by deleting or moving files. Your system will run noticeably better once you do.

Is it safe to delete files in the Other category?

Not all of it. The Other category includes system files Windows needs to run, so deleting randomly can break things. Use Disk Cleanup instead — it only removes files that are safe to delete. If you want to manually delete from Other, only remove cache folders you recognize, like browser cache or old temporary files.

Can I add more storage to my PC?

Yes. Most desktop PCs can have a second hard drive or SSD added. Laptops are trickier — some allow you to replace the existing drive with a larger one, but many do not. Check your PC model online or contact the manufacturer to see if upgrades are possible. Adding storage is usually cheaper than buying a new PC.

Should I use cloud storage instead of local storage?

Cloud storage like OneDrive, Google Drive, or iCloud is good for documents and photos you access from multiple devices, but it requires an internet connection and a subscription for large amounts. Local storage is faster and does not depend on internet. Most people use both — cloud for important files and local storage for everything else.