Quick answer: How to see how much storage remains
To check storage space on a Mac right now, open the Apple menu and choose About This Mac, then click Storage. Or open Apple menu > System Settings (or System Preferences) > General > Storage. Both show a color-coded bar with used capacity and a breakdown by storage category. If About This Mac lacks detail, open Settings > General > Storage and choose Manage Recommendations for practical cleanup suggestions. For more detail, use macOS built-in tools like Storage Management and the Finder to identify large files.
macOS storage overview
macOS reports capacity, available space, and a categorized breakdown. Understanding what macOS counts helps you decide what to manage. Common categories include Apps, Photos, Audio, Backups, System, and Other. Available space is what you can use without deleting or offloading. macOS may reserve space for system updates and caching; some of this appears under System. If your available space is low, focus on large categories revealed by the breakdown.
Use About This Mac and Storage Management
Check total and available space
Use About This Mac for a concise overview:
- Click the Apple menu and select About This Mac.
- Open the Storage tab to see a color-coded bar and total capacity.
- Click Manage to open Storage Management for recommendations.
In macOS Ventura and later, System Settings consolidates these options. Open System Settings, go to General > Storage to see the same bar and an estimate of remaining time based on current usage.
Review storage category details
The Manage window lists categories such as Apps, Photos, Audio, Backups, and System. Click each category for recommendations, including offload suggestions for apps or review prompts for large files. On Apple silicon Macs with unified memory architecture, some system components may show differently, but these recommendations remain practical for freeing space.
Built-in tools for deeper insight
Storage Management
Storage Management provides actionable suggestions:
- Recommendations to optimize storage and reduce clutter.
- Information about large files and documents you might consolidate.
- Options to automatically store files in iCloud and optimize storage to keep local copies while saving space.
Finder and About This Mac > More Info
In About This Mac > More Info (or Overview on Apple silicon), you can review total memory. While this refers to RAM, not disk, it helps distinguish storage from memory issues. To inspect files directly, use Finder and sort by size, or right-click a drive and Get Info to see used and available bytes.
Practical cleanup actions
When you need to reclaim space quickly, prioritize large categories:
- Review apps you no longer use and remove them thoroughly, including support files.
- Empty the Trash and Downloads folder regularly.
- Store photos and videos in iCloud if you have a subscription, or export and delete originals when safe.
- Clear caches cautiously; avoid deleting system or app caches unless you understand the app’s behavior.
- Use the Recommendations in Storage Management to offload unused apps or store files in iCloud.
Quick reference: Storage indicators and steps
| Metric or Action | Verified Detail | Source Type |
|---|---|---|
| Check storage: About This Mac → Storage | Shows capacity, used space, available space, color-coded categories | macOS user interface |
| Check storage: System Settings → General → Storage | Identical view to About This Mac, with Manage Recommendations | macOS user interface |
| Open Storage Management | Accessible from About This Mac or System Settings; provides recommendations and category breakdowns | macOS built-in tool |
| Available space | Space you can use; low space can delay updates and backups | Apple system behavior documentation |
| System and other categories | May include reserved space for updates and caches; varies by macOS version | Apple technical documentation and observed behavior |
Common questions about Mac storage
Why does macOS say ‘Optimization in progress’? macOS may be optimizing video streaming or photo libraries; this is typical behavior and usually resolves itself. Why is Available less than expected after install? macOS reserves space for system files, updates, and caching, which can reduce visible capacity initially. Should you always keep free space? Yes; macOS benefits from free space for performance, thermal management, and update/install operations. A general guideline is to keep a few gigabytes free on smaller drives, more on larger ones, but consistent low available space warrants review.
External storage and backups
External drives and network volumes appear in the Storage bar when connected. They are additional capacity and do not replace startup disk space. Time Machine backups can consume significant space on external drives; manage them through Time Machine settings. For archival purposes, consider cloud services or external drives, but remember that backups are not a substitute for routine startup disk maintenance.
Summary: Reliable ways to check and manage storage on Mac
Use About This Mac → Storage or System Settings → General → Storage to see capacity and categories. Click Manage to open Storage Management for recommendations. Use Finder to inspect large files and review app lists to remove what you no longer need. Keep a few gigabytes free for system operations, and schedule regular reviews if you store many photos, videos, or large projects. These evergreen steps help you maintain clear insight into storage space on any modern Mac running current or recent macOS versions.