Start by seeing what's actually taking up space

Before you delete anything, find out which folders and files are using the most room. Windows has a built-in tool called Storage Sense that shows you a breakdown by category — photos, videos, documents, applications, and temporary files. Open Settings, go to System, then Storage, and you'll see a list ranked by size.

If you want more detail about a specific folder, right-click it, select Properties, and Windows will calculate the total size. This takes a minute or two for large folders, but it tells you exactly what you're dealing with. Many people are shocked to find that old video files or installer programs they forgot about are taking up 50 gigabytes or more.

Key Takeaways

  • Use Windows Storage Sense to see which file types and folders are using the most space before you delete anything.
  • Temporary files, old Windows installations, and duplicate photos are usually safe to remove and often free up 10 to 50 gigabytes.
  • Move large files like videos, backups, or old projects to an external drive or cloud storage instead of deleting them.
  • Uninstall programs you no longer use through Settings rather than just deleting their folders, so they release all the space they claimed.
  • Empty your Recycle Bin after deleting files, because deleted items still take up space until you do.

Remove temporary files and old Windows versions

Windows stores temporary files in a folder called Temp, and these pile up over time. Storage Sense can clean these out automatically. Go to Settings, System, Storage, and scroll down to find "Temporary files." Click it, and Windows will show you what it can safely delete — usually old Windows installations from updates, temporary internet files, and cache files. Select what you want to remove and click Delete.

Old Windows installations take up 15 to 25 gigabytes each. If you updated Windows recently and everything is working, you can safely delete the previous version. Windows keeps it around for 10 days in case you need to roll back, but after that it's just wasted space. Storage Sense will tell you the date, so you can decide whether to keep it.

Uninstall programs you don't use

Programs you installed but never use are taking up space and running in the background. Go to Settings, Apps, Apps & features, and you'll see a list of everything installed on your PC, sorted by size. Look for anything you haven't opened in months — old games, trial software, duplicate browsers, or tools you tried once.

Click on the program and select Uninstall. This removes not just the program files but also the registry entries and temporary files it created. straightforward deleting a program's folder leaves behind pieces that still claim disk space. Uninstalling through Settings cleans it up completely. This step alone often frees up 20 to 40 gigabytes if you have several large programs you never use.

Move files instead of deleting them

Before you delete anything large — especially photos, videos, or project files — move it to external storage or cloud storage instead. An external hard drive costs $50 to $100 and gives you 1 to 4 terabytes of space. A USB drive is cheaper but slower. Cloud storage like OneDrive, Google Drive, or Dropbox costs $2 to $10 per month for 100 gigabytes to 2 terabytes.

Moving files is safer than deleting them because you keep a copy. Plug in an external drive, open File Explorer, and drag your large folders to it. For cloud storage, upload the files through the service's website or app, then delete them from your PC once the upload finishes. This way you free up space without the risk of losing something you might need later.

Clean up duplicate and old photos

Photos and screenshots accumulate quickly, and many people have duplicates from syncing between devices or taking multiple shots. Windows Photos app has a built-in cleanup feature. Open Photos, go to Settings, then Cleanup, and it will scan for duplicates and blurry photos. You can preview them before deleting, so you won't lose a photo you actually want.

If you have years of photos stored on your PC, consider moving older ones to cloud storage or an external drive. Most people don't look at photos from five years ago, but they take up gigabytes. You can keep the last year or two on your PC and move the rest. This frees up space while keeping your photos safe.

Empty the Recycle Bin

When you delete a file, it goes to the Recycle Bin and still takes up space on your hard drive. It stays there until you empty the bin. Right-click the Recycle Bin icon on your desktop and select Empty Recycle Bin. This permanently removes the files and actually frees up the space.

If you're not sure whether you want to permanently delete something, leave it in the Recycle Bin for a few days. But once you're confident you don't need it, empty the bin to reclaim that space. This is a quick step that many people forget, and it can free up several gigabytes if you've deleted a lot recently.

Turn on automatic cleanup

Instead of manually clearing space every few months, let Windows do it for you. Go to Settings, System, Storage, and turn on Storage Sense. You can set it to automatically delete temporary files every day, week, or month. You can also set it to empty the Recycle Bin automatically after a certain number of days.

Storage Sense won't delete your personal files — it only removes temporary files, old Windows installations, and items in the Recycle Bin that are older than the time period you set. This keeps your PC running smoothly without you having to think about it.

Frequently Asked Questions

How much disk space should I keep free?

Windows works best when you have at least 10 to 15 percent of your total drive space free. If your drive is nearly full, your PC slows down and programs may crash. If you have a 500-gigabyte drive, try to keep at least 50 gigabytes free. If you're consistently running out of space, an external drive or larger internal drive is a better long-term solution than constantly deleting files.

Is it safe to delete files from the Windows folder?

No. The Windows folder contains system files your PC needs to run. Deleting from it can break your operating system. Stick to Storage Sense, which only removes files Windows knows are safe to delete. If you're unsure whether a file is safe to remove, don't touch it.

What if I accidentally deleted something important?

If it's still in the Recycle Bin, right-click it and select Restore. If you already emptied the Recycle Bin, recovery is much harder. For important files, consider using a recovery tool like Recuva, though success depends on how long ago you deleted it and whether new data has written over it. This is why moving files to external storage instead of deleting them is safer.

Can I move my entire Documents folder to an external drive?

Yes. Right-click your Documents folder, select Properties, go to the Location tab, and click Move. Choose your external drive as the new location. Windows will move all your files there and update the shortcuts so programs still find them. Do this for Downloads, Pictures, and Videos folders too if they're taking up a lot of space.

Does clearing disk space make my PC faster?

Freeing up space helps your PC run better, especially if your drive was nearly full. A full drive slows down file access and can cause programs to crash. However, clearing space won't make your PC dramatically faster unless it was critically full. If your PC is slow for other reasons — too many startup programs, outdated hardware, or malware — clearing disk space alone won't fix it.