How to Free Up Storage on a Mac

The fastest way to free up storage on a Mac is the built-in Storage panel: open the Apple menu > System Settings, click General in the sidebar, then click Storage. That screen shows exactly what is eating your disk and offers one-click Recommendations — Store in iCloud, Optimize Storage and Empty Trash automatically. From there you can review each category, remove large or old files, clear caches and downloads, and offload apps you rarely use. Below is the full, current walkthrough, plus what the mysterious System Data and purgeable figures actually mean.

1. Open the Storage panel and read the map

Everything starts here. The Storage bar is the single most useful view of where your space has gone.

1. Choose Apple menu > System Settings.
2. Click General in the sidebar (scroll down if you don't see it).
3. Click Storage on the right.

Wait a few seconds for the coloured bar to finish calculating. Each segment is a category — Applications, Documents, Photos, Messages, Mail, Trash, System Data and more. Hover over a segment to see its size. Where a category shows an info (i) or More Info button, click it to drill in and delete individual items. This works for categories such as Applications, Documents, Messages, Music Creation, Podcasts, Trash and TV — Apple's Change Storage settings on Mac lists the same path and the categories the Info button opens.

2. Turn on the built-in Recommendations

Directly under the bar, macOS lists a handful of Recommendations. These are the safest wins because Apple designed them to remove data it can rebuild or re-download. The three you will usually see are described in Apple's Optimize storage space on your Mac guide:

• Store in iCloud — moves the contents of your Desktop and Documents folders to iCloud Drive, your photos and videos to iCloud Photos, and messages and attachments to iCloud, keeping only recently opened files on the Mac when space is needed. This uses your iCloud storage quota, so check you have room in your plan first.
• Optimize Storage — automatically removes Apple TV movies and shows you have already watched, and keeps only recent email attachments on the Mac when space runs low. You can re-download anything later.
• Empty Trash automatically — erases items that have been in the Trash for more than 30 days. You can change this later in the Finder.

Click the button beside any recommendation to switch it on. None of these delete files you are actively using.

3. Empty the Trash — properly

Deleting a file only moves it to the Trash; the space isn't reclaimed until the Trash is emptied.

1. Click the Trash icon in the Dock.
2. Click Empty in the top-right of the window (or Control-click the Trash icon and choose Empty Trash).
3. Confirm when prompted.

Remember that Photos and Mail keep their own trash. In Photos, empty Recently Deleted in the sidebar; in Mail, erase the deleted-items mailbox. Until you do, that space stays used.

4. Hunt down large and old files

The biggest single reclaim usually comes from a few forgotten giants — disk images, video exports, old installers. Finder can surface them fast:

1. Open a Finder window and press Cmd + F to start a search.
2. Set the scope to This Mac.
3. Change the first filter to File Size > is greater than and enter a threshold such as 500 MB.
4. Sort the results by Size and review the largest items. Delete what you no longer need and empty the Trash afterwards.

The Storage panel's Documents category also has a Large Files and Downloads view that does much the same thing with a friendlier interface.

5. Clear your Downloads folder and app caches

The Downloads folder is where installers, PDFs and zip files pile up unnoticed. Open it from the Finder sidebar, switch to list view, sort by Size or Date Added, and clear out what you've finished with.

Application and browser caches also grow over time. In most cases you don't need to touch these by hand — macOS clears safe caches automatically when the disk fills, and each browser has its own control (for example Safari's Settings > Advanced and the Develop menu, or the browser's own history/clear-data dialog). If you do want to look at the user cache folder manually, it lives at:

~/Library/Caches/

To get there, open Finder, choose Go > Go to Folder (Cmd + Shift + G), paste the path and press Return.

6. Remove or offload apps you don't use

Apps and their support files add up. From the Storage panel, click the info control next to Applications to see every app with its size and last-used date, then select an app and delete it right there. You can also drag an app from the Applications folder to the Trash. Some apps ship their own uninstaller — check the app's folder or the developer's site if a lot of leftover data remains.

7. Understand "System Data" and purgeable space

Two figures confuse almost everyone. System Data (older macOS called it "Other") is the catch-all bucket for caches, logs, fonts, temporary files and local Time Machine snapshots — anything that doesn't fit a named category. It is normal for it to be tens of gigabytes, and there is no button that safely "empties" it. The right approach is indirect: empty the Trash, clear app and browser caches, restart your Mac (a reboot clears many temporary files), and let macOS do the rest — Apple notes that macOS itself removes caches, logs, temporary database files, interrupted downloads and staged updates when space is needed, in the same storage-optimisation guide.

Purgeable space is storage macOS is holding but can free the instant you need it — cached files and local snapshots. It's why the free space in Finder can differ from Disk Utility. You rarely need to force it: when an app needs room, macOS purges this space automatically. Emptying the Trash and restarting speeds it along.

The short version

1. Open System Settings > General > Storage and read the bar.
2. Turn on the Recommendations that suit you.
3. Empty the Trash (and Photos/Mail trash).
4. Delete large/old files and clear Downloads.
5. Remove apps you don't use.
6. Restart, then let System Data and purgeable space settle on their own.