The quickest way to find large files on a Mac is to open System Settings > General > Storage and review the recommendations and storage categories. For a more precise search, use Finder with a file-size filter, then review each result carefully before moving anything to the Trash.
Finding and removing large, unnecessary files can free Mac storage for apps, documents, photos, and system updates. The safest approach is to identify what is using space first, then delete only files you recognize and no longer need.
Quick Answer
To search for large files in Finder:
- Open Finder.
- Press Command-F.
- Select This Mac.
- Click the + button near the top-right corner.
- Choose File Size from the first menu.
- Choose is greater than from the second menu.
- Enter a size such as 1 GB.
- Review the results and sort them by size if needed.
- Move unwanted files to the Trash, then empty the Trash only after checking its contents.
You can also open Apple menu > System Settings > General > Storage for a broader overview and Apple’s built-in recommendations.
Check Storage Recommendations in System Settings
System Settings provides an overview of how your Mac’s storage is being used. It can also suggest ways to reduce storage usage, such as reviewing large files, removing downloaded content, or managing items you may no longer need.
Before deleting anything, close documents and apps that may currently be using the files. Deleting an item that is open or actively being edited can cause lost changes or unexpected behavior.
- Click the Apple menu in the top-left corner.
- Select System Settings.
- Click General in the sidebar.
- Select Storage.
- Wait for macOS to calculate the storage categories.
The Storage screen may show categories such as applications, documents, photos, messages, macOS data, and system data. The exact categories and available recommendations can vary depending on the files and apps on your Mac.
Review the recommendations
Look for recommendations that help identify removable content. Depending on what is stored on your Mac, you may see options related to:
- Large files
- Downloads
- Unsupported apps
- Documents
- Trash
- Files stored in iCloud
Select a recommendation to review its contents. Read the file names, locations, and sizes before removing anything.
Be careful with system and application data
Some categories are not collections of ordinary files that should be deleted manually. System Data, for example, can include caches, logs, temporary files, local snapshots, and other information managed by macOS or installed apps.
Avoid deleting items from unfamiliar system folders simply because they appear large. Removing the wrong system or application file can cause an app to stop working or affect macOS behavior.
Find Large Files with Finder
Finder is the most flexible built-in tool for searching for large files. You can search across the entire Mac or limit the search to a particular folder, such as Downloads, Documents, or an external drive.
Search the entire Mac by file size
- Open Finder from the Dock.
- Press Command-F to start a search.
- Click This Mac near the top of the Finder window.
This searches across locations indexed by Finder instead of only the current folder. - Click the + button near the top-right corner.
- Click the first filter menu and choose File Size.
- Click the next menu and choose is greater than.
- Enter a size, such as 500 MB, 1 GB, or 5 GB.
- Review the results.
If File Size is not available in the first menu, choose Other. Search for File Size, select it, and click OK. You can then use it as a search filter.
Sort results by size
To make the largest files easier to spot:
- In the Finder search results, choose View > as List.
- If the Size column is not visible, Control-click or right-click a column heading.
- Select Size.
- Click the Size heading to sort the results.
Click the heading again if you need to reverse the order. Large files may include videos, disk images, archived installers, virtual machines, old backups, and application libraries.
Search one folder at a time
Searching the entire Mac can produce a long list. Searching specific folders is often easier for beginners:
- Open Finder.
- Select a folder such as Downloads or Documents.
- Press Command-F.
- Make sure the search is limited to the selected folder rather than This Mac.
- Add the File Size filter.
- Set a threshold and review the results.
The Downloads folder is a useful place to start because it may contain old installers, compressed archives, videos, and duplicate files that were downloaded temporarily.
Search for Large Files in Common Locations
Some locations frequently contain files that can be reviewed safely, provided you recognize the contents.
Downloads
Look for:
- Old app installers
- Disk image files ending in
.dmg - Compressed archives such as
.zip - Downloaded videos
- Duplicate documents
- Files that were downloaded for one-time use
Do not delete an installer if you still need it to reinstall an app. You can usually download many installers again, but keeping a copy may be useful when internet access is limited.
Documents and Desktop
Large files on the Desktop and in Documents are often personal files, so review them individually. Pay particular attention to:
- Video projects
- Exported movies
- Presentation files
- High-resolution image folders
- Audio recordings
- Duplicate copies of documents
If you need to keep a file but not on the Mac’s internal storage, copy it to an external drive or another approved storage location. Confirm that the copy opens successfully before deleting the original.
Movies, Music, and Photos
Media files can consume substantial space. Before removing them, check whether they are also stored in an app library or synchronized with another device.
For example, deleting a file from a Photos library or a media library may not behave the same way as deleting an ordinary file in Finder. Use the relevant app’s own deletion and storage controls when possible, and check whether the item is synchronized through iCloud or another service.
Delete Large Files Safely
Finding a large file does not necessarily mean it is safe to remove. Follow this checklist before deleting anything:
- Check the file name and location.
A file in Downloads is easier to identify than an unfamiliar item in a system folder. - Open the file if you are unsure what it is.
This can help confirm whether it is a duplicate, an old export, or an important project. - Check whether an app is using it.
Quit the related app first. Save all work before quitting because unsaved changes may be lost. - Make a backup if the file is important.
Use Time Machine, an external drive, or another backup method before deleting it. - Move it to the Trash.
Control-click the file and select Move to Trash, or drag it to the Trash in the Dock. - Review the Trash.
Items in the Trash still use storage until the Trash is emptied. - Empty the Trash only when you are certain.
Control-click Trash in the Dock and choose Empty Trash.
Emptying the Trash permanently removes its contents from the normal Finder recovery path. Do not empty it if you may need to restore a deleted file.
Use Quick Look before deleting
You can preview many files without opening their full apps:
- Select a file in Finder.
- Press the Space bar.
- Review the preview.
- Press the Space bar again to close it.
Quick Look can help identify images, videos, PDFs, and other documents. It does not replace a backup or guarantee that a file is safe to delete.
Find Large Files on an External Drive
You can use Finder to search an external storage device, provided it is connected and visible.
- Connect the external drive.
- Open Finder.
- Select the drive in the Finder sidebar.
- Press Command-F.
- Add the File Size filter.
- Set a size threshold.
- Review the results before moving or deleting anything.
Be especially careful when deleting files from a backup drive. Removing files from a backup can reduce your ability to restore lost data. If the drive contains a Time Machine backup or another backup system, manage it through that system rather than deleting unfamiliar folders manually.
Use Terminal for a Size-Sorted Folder Listing
Terminal can quickly show which items in a specific folder use the most space. This method is useful for users who are comfortable with command-line tools, but it is not required for ordinary searches.
The following command lists the contents of your Downloads folder and sorts them by apparent size:
du -sh ~/Downloads/* 2>/dev/null | sort -hr
What it does:
du -shestimates the size of each item.~/Downloads/*checks items in your Downloads folder.2>/dev/nullhides error messages for inaccessible items.sort -hrsorts the results from largest to smallest.
This command only reads information and does not delete or change files. There is no reversal step because it makes no changes.
To inspect another folder, replace ~/Downloads/* with a different path. For example:
du -sh ~/Documents/* 2>/dev/null | sort -hr
Avoid running commands that include rm, especially with wildcard characters such as *, unless you fully understand which files they will remove. A mistaken command can permanently delete files without sending them to the Trash.
What Not to Delete
Do not remove files solely because they are large. Avoid manually deleting unfamiliar items from:
/System/Library~/Library- Application folders
- Backup folders
- Virtual machine folders
- App libraries
- Files belonging to synchronization services
Caches and temporary files may look unnecessary, but apps and macOS often manage them automatically. Deleting them manually can cause login problems, missing settings, app errors, or other unexpected behavior.
If an application is using too much space, uninstall it using the app’s documented removal process or the app’s own settings. Removing only part of an application’s support files may not free the expected amount of storage and can leave the app in an inconsistent state.
If a Large File Is in iCloud
A file stored in iCloud may have a local copy on your Mac and an online copy in iCloud. Removing the local download is different from deleting the file from iCloud.
Read the wording carefully when using storage recommendations or Finder controls. An option that removes a local download may leave the file available online, while moving an iCloud file to the Trash may delete it from iCloud and other synchronized devices after the service processes the change.
Before deleting synchronized files:
- Confirm whether the file is needed on another device.
- Check that important files are backed up separately.
- Review any warning macOS displays.
- Wait for synchronization to finish before making additional changes.
Troubleshooting
Finder does not show the File Size filter
Click Other in the search attribute menu, search for File Size, select it, and click OK. Then configure the size condition.
The search shows fewer files than expected
Finder search depends partly on indexing. A file may not appear immediately after it is created, moved, or copied. Check the specific folder manually, wait briefly, or search the folder where you know the file is located.
Files inside some application libraries or protected locations may not appear in the same way as ordinary Finder files.
Storage totals do not match Finder sizes
System Settings and Finder may calculate storage differently. Some storage is reserved for macOS, caches, snapshots, application data, or other managed content. The numbers may also take time to update after files are moved to the Trash or deleted.
I deleted a large file, but free space did not increase
Check whether the file is still in the Trash. Empty the Trash only after confirming that you no longer need its contents.
Also check whether the file was duplicated, stored in an app library, or synchronized through iCloud. A visible Finder file may not be the only copy using storage.
I cannot delete a file
The file may be open, protected, owned by another user, or managed by an app. Close the related app and try again. Do not change permissions or delete protected files unless you understand why they are protected.
A large file is inside an app library
Use the app’s own tools to manage its storage whenever possible. Removing individual files from a library package in Finder can damage the library or make its contents unavailable.
Frequently Asked Questions
What size should I use when searching for large files?
Start with 1 GB for a general cleanup. If the results are too numerous, try 5 GB or 10 GB. For a smaller cleanup, search for files larger than 500 MB.
What are the largest files on a Mac usually?
Common examples include videos, virtual machines, disk images, backup files, application libraries, archived projects, and high-resolution photo collections. The largest files vary by how the Mac is used.
Is it safe to delete large files from Downloads?
Often, but not always. Review each file first. Keep installers or archives if you still need them, and do not delete files that are part of an active project.
Does moving a file to the Trash free storage immediately?
No. The file normally continues to use storage until you empty the Trash.
Can I recover a file after emptying the Trash?
Not through the normal Finder process. Recovery may require a backup or specialized recovery software, and success is not guaranteed. Check your backups before emptying the Trash.
Should I delete System Data to free space?
No. Do not manually remove unfamiliar files from System Data or protected system folders. Use Storage recommendations, remove files you recognize, and allow macOS and apps to manage system data.
Can I find large files without installing an app?
Yes. System Settings, Finder, and, for advanced users, Terminal can identify large files without third-party software.
Final Thoughts
Start with System Settings > General > Storage for an overview, then use a Finder search for files larger than 1 GB. Review each result by name, location, and purpose, back up important data, and empty the Trash only when you are certain. This cautious process can free Mac storage without risking essential documents, app libraries, or system files.