What "clearing" your Mac actually means

Clearing a Mac means removing files and programs you no longer use so the computer runs faster and has room for new files. Your Mac slows down when the hard drive gets too full — it needs empty space to write temporary files while you work. You are not erasing the entire computer; you are choosing what stays and what goes.

Most people think they need to clear space when their Mac tells them the disk is almost full, or when opening programs takes noticeably longer. The goal is to get your hard drive to at least 15 percent empty space. If you have 500 GB of storage, that means keeping at least 75 GB free.

The safest approach is to move files you want to keep to external storage first, then remove the rest. This way you cannot accidentally delete something important while trying to make room.

Key Takeaways

  • Check how much space you are using by opening About This Mac from the Apple menu, then clicking Storage — this shows you exactly which folders are taking up the most room.
  • Move large files like videos, photos, and old projects to an external drive or cloud storage before deleting anything from your Mac.
  • Empty the Trash folder after deleting files, because files stay on your hard drive until you do — emptying Trash is what actually frees up space.
  • Remove programs you no longer use by dragging them from Applications to Trash, then empty Trash to complete the removal.
  • Clear your browser cache and old downloads folder, which often hold gigabytes of files you will never look at again.

Finding out what is taking up space on your Mac

Before you delete anything, you need to see what is actually using your hard drive. Open the Apple menu in the top left corner, then click About This Mac. A window opens. Click the Storage tab.

You will see a colored bar showing how much space each type of file is using — Documents, Photos, Videos, Backups, and so on. The bar also shows how much space is free. Click on any colored section to see which specific folders are inside it. For example, clicking on Documents might show you that your Movies folder is taking up 200 GB.

Write down the largest folders. These are where you will find the most space to free up. If you see a folder labeled Backups that is very large, that is often old Time Machine backups you can safely remove.

Moving files to external storage before deleting

The safest way to clear space is to move files you want to keep to an external hard drive or cloud storage. This way, the files still exist — they are just not on your Mac anymore. Open Finder and plug in your external drive, or open the cloud storage app you use (Google Drive, Dropbox, OneDrive, or iCloud).

Find the folders taking up the most space — usually Photos, Videos, or old project folders. Drag these folders to your external drive or cloud storage. Wait for the transfer to finish. You can tell it is done when the folder appears in the external drive and the progress bar disappears.

Once the files are safely on the external drive, you can delete them from your Mac. Do not delete them until you have confirmed they are on the external drive and you can open them there.

Deleting files and emptying the Trash

After you have moved files you want to keep, delete the rest. Find a file or folder in Finder, right-click it, and select Move to Trash. The file disappears from its folder but is still on your hard drive — it is just in the Trash folder now.

Deleting files does not actually free up space until you empty the Trash. Open Finder, click Trash in the sidebar, then right-click anywhere in the empty space and select Empty Trash. A dialog box asks if you are sure. Click Empty Trash again. Now the files are actually gone and the space is free.

If you are not sure whether you want to delete something, leave it in Trash for a week. You can still recover it from Trash if you change your mind. After a month, macOS automatically empties Trash on its own.

Removing programs you no longer use

Programs (also called applications or apps) take up space on your hard drive. If you have programs you never open, removing them frees up that space. Open Finder and click Applications in the sidebar.

Look through the list and find programs you do not use. Common ones to remove are trial versions of software, games, or tools you installed once and forgot about. Right-click the program and select Move to Trash. Then empty Trash to complete the removal.

Some programs leave behind small files in other folders even after you move the program to Trash. These leftover files are usually small enough that you do not need to worry about them. If you want to remove them completely, you can use a program like AppCleaner, which finds and removes these leftover files automatically — but this is optional.

Clearing your browser cache and downloads folder

Your web browser stores copies of websites you visit in a folder called the cache. Over time this folder can grow to several gigabytes. Clearing it frees up space and does not affect your browsing — the browser will just read fresh copies of websites the next time you visit them.

In Safari, click Safari in the menu bar, then Settings, then the Privacy tab. Click Manage Website Data, then Remove All. In Chrome, click the three dots in the top right, go to Settings, click Privacy and security, then Clear browsing data. Make sure Cached images and files is checked, then click Clear data.

Also check your Downloads folder. Open Finder, click Downloads in the sidebar, and look for old files you no longer need. Installers for programs you already installed, old documents, and temporary files often pile up here. Move anything you want to keep to a permanent folder, then delete the rest and empty Trash.

Checking your storage after clearing

After you have deleted files, moved files to external storage, and emptied Trash, go back to About This Mac and click Storage again. The free space should be noticeably larger. Your Mac should also feel faster — programs will open more quickly and your computer will not pause as often while you work.

If you still do not have 15 percent free space, repeat the process. Look at the Storage tab again to see what is still taking up the most room, move those files to external storage, delete them, and empty Trash. You may need to do this a few times if your hard drive was very full.

Once you have cleared space, try to keep at least 15 percent free going forward. This means occasionally moving old files to external storage or cloud storage, and deleting programs you no longer use. Checking your storage once a month takes only a few minutes and prevents your Mac from slowing down again.

Frequently Asked Questions

Will clearing my Mac delete my photos and documents?

Only if you delete them. The process described here moves files you want to keep to external storage first, so they are safe. You only delete files after they are backed up somewhere else. If you are unsure about a file, move it to external storage instead of deleting it.

What happens if I delete something by accident?

You can recover it from the Trash folder as long as you have not emptied Trash yet. Open Finder, click Trash, find the file, right-click it, and select Put Back. The file returns to its original location. If you have already emptied Trash, recovery is much harder and may require professional help.

Is it safe to delete the Downloads folder?

It is safe to delete old files from Downloads, but check first that you do not need them. Installers for programs you already installed can be deleted. Documents and files you might need later should be moved to a permanent folder or external storage first. When in doubt, move it instead of deleting it.

How often should I clear space on my Mac?

If you work with large files like videos or photos, check your storage once a month. If you mostly use your Mac for email and web browsing, checking every few months is enough. The goal is to keep at least 15 percent of your hard drive empty so your Mac runs smoothly.

Can I use cloud storage instead of an external drive?

Yes. Google Drive, Dropbox, OneDrive, and iCloud all work well for moving files off your Mac. Cloud storage has the advantage that you can access your files from any computer, but it requires an internet connection and a subscription for large amounts of storage. External drives are faster for very large files but only work when the drive is plugged in.