What clearing cache does and why you might want to do it

Cache is temporary data your computer stores to make programs run faster. When you visit a website, your browser saves images, scripts, and page layouts so the next time you visit, it loads quicker instead of downloading everything again. Your operating system does the same thing — it stores temporary files from programs you use regularly.

Clearing cache frees up disk space, can fix programs that are running slowly or crashing, and removes browsing history if you want privacy. Most people clear cache once every few months, though heavy computer users might do it more often. You do not need to clear cache regularly for your computer to work — it is optional maintenance.

Key Takeaways

  • Windows users can clear temporary files through Settings > System > Storage > Temporary files, or use Disk Cleanup for a broader sweep.
  • Mac users can empty the cache folder at ~/Library/Caches by moving files to Trash, or use the built-in Storage Management tool in System Settings.
  • Browser cache (separate from system cache) is cleared through each browser's settings — Chrome, Firefox, Safari, and Edge all have different menu paths.
  • Clearing cache is safe and will not delete your files, passwords, or documents unless you specifically choose those options.
  • After clearing cache, programs may run slightly slower the first time you use them because they have to rebuild the temporary files.

Clearing temporary files in Windows 10 and 11

The fastest way to clear cache in Windows is through the Settings app. Open Settings, go to System, then select Storage from the left menu. At the top of the Storage page, you will see Temporary files — click on it. Windows will show you how much space temporary files are using. Check the boxes next to the types of files you want to remove: "Temporary files", "Recycle Bin", and "Downloads" are the most common choices. Then click Remove files.

If you want more control over what gets deleted, use Disk Cleanup instead. Press the Windows key and type "Disk Cleanup", then open the app. Select your main drive (usually C:), and Windows will scan for temporary files. A window will appear showing different categories — "Temporary files", "Temporary Internet files", and "Recycle Bin" are the ones most people check. Select what you want to delete and click OK. Windows will ask you to confirm; click Delete Files.

Clearing cache on a Mac

Mac stores cache files in a hidden folder. Open Finder, click Go in the menu bar at the top, then select Go to Folder. Type ~/Library/Caches and press Enter. A folder will open showing all your cached files. You can select individual folders (like one for a specific program) or select all by pressing Command+A, then drag them to the Trash. Empty the Trash afterward to permanently remove them.

Alternatively, use the built-in Storage Management tool. Click the Apple menu in the top-left corner, select System Settings, then go to General and click Storage. You will see a breakdown of what is using space on your drive. Click Manage next to the storage bar. Under "Documents", you may see options to remove cache or old files — the exact options vary by macOS version. Select what you want to remove and click the delete button.

Clearing browser cache in Chrome, Firefox, Safari, and Edge

Browser cache is separate from your system cache and stores website data. In Google Chrome, click the three-dot menu in the top-right corner, select Settings, then go to Privacy and security and click Clear browsing data. A window will appear — make sure the time range is set to All time at the top, check Cookies and other site data and Cached images and files, then click Clear data.

In Firefox, click the menu button (three horizontal lines) in the top-right, select Settings, go to Privacy & Security, scroll to Cookies and Site Data, and click Clear Data. Make sure both checkboxes are selected, then click the button. In Safari, click Safari in the menu bar, select Settings, go to the Privacy tab, and click Manage Website Data. Select all sites and click Remove. In Microsoft Edge, click the three-dot menu, select Settings, go to Privacy, search, and services, and under Clear browsing data click Choose what to clear. Select your time range and check the boxes you want, then click Clear now.

What happens after you clear cache

After clearing cache, your computer will have more free disk space — how much depends on how much cache accumulated. Programs may run slightly slower the first time you open them because they have to rebuild their temporary files, but this only lasts a few seconds. Websites will load normally; your browser will just read the page fresh instead of using the stored version.

Clearing cache does not delete your passwords, bookmarks, saved form information, or any of your actual files and documents. If you want to keep those things but remove cache, make sure you do not check boxes labeled "Cookies" or "Autofill data" when clearing browser cache. System cache clearing does not touch your Documents, Desktop, Downloads, or any folder you created yourself.

When clearing cache might fix a problem

If a website looks broken, loads slowly, or shows outdated information, clearing your browser cache often fixes it. The old cached version of the page is preventing the new version from loading properly. If a program is crashing or freezing, clearing system cache can help because corrupted temporary files sometimes cause these issues. After clearing cache, restart the program or your computer to see if the problem is resolved.

Cache clearing is also useful if you are running low on disk space and need to free up room quickly. Check your Storage settings first to see how much space cache is actually using — if it is only a few hundred megabytes, clearing it will not make a huge difference. If it is several gigabytes, clearing cache can give you meaningful space back.

Frequently Asked Questions

Will clearing cache delete my files or passwords?

No. Cache is temporary data only. Your documents, photos, passwords, and bookmarks stay on your computer. If you want to keep passwords and form data, do not check those boxes when clearing browser cache. System cache clearing never touches your personal files.

How often should I clear cache?

There is no set schedule. Most people clear cache every few months or when they notice a program running slowly. Heavy computer users might clear it monthly. You can also set your browser to clear cache automatically every time you close it — look in Privacy settings for an option like "Clear cookies and site data when Firefox is closed".

What is the difference between clearing system cache and browser cache?

System cache is temporary data your operating system and programs store. Browser cache is temporary data your web browser stores from websites you visit. You can clear one without clearing the other. Most people clear browser cache more often because it builds up faster.

Why is my computer still slow after clearing cache?

Cache is usually not the main cause of slowness. If clearing cache did not help, the problem might be too many programs running at startup, a full hard drive, malware, or an aging computer. Check your Task Manager (Windows) or Activity Monitor (Mac) to see which programs are using the most memory and processor power.

Can I clear cache on just one program instead of everything?

Yes. On Mac, you can go into the Caches folder and delete only the folder for the program you want. On Windows, some programs have their own cache-clearing option in their settings menu — check the program's preferences or settings. For browsers, you can clear data for specific websites instead of all sites by using the "Manage Website Data" option.