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How to Free Up Storage Space on Your Computer
4 min read
Updated 18 December 2025
Why Free Up Space?
When storage is low:
- Your computer runs slowly
- You can't save new files
- Programs may crash
- Updates can't install
Checking Available Space
Windows
- Open File Explorer
- Click This PC
- See storage bars under each drive
Mac
- Click the Apple menu
- Click About This Mac
- Click Storage
Quick Wins to Free Space
1. Empty the Recycle Bin
Deleted files still take up space until you empty the bin:
Windows:
- Right-click the Recycle Bin on your desktop
- Click Empty Recycle Bin
- Right-click the Trash in the Dock
- Click Empty Trash
2. Clear Downloads Folder
Old downloads accumulate:
- Open your Downloads folder
- Delete files you no longer need
- Empty the Recycle Bin
3. Uninstall Unused Programs
Windows:
- Go to Settings > Apps > Installed apps
- Find programs you don't use
- Click the three dots > Uninstall
- Open Finder > Applications
- Drag unused apps to Trash
Using Built-in Cleanup Tools
Windows Disk Cleanup
- Open File Explorer
- Right-click your main drive (usually C:)
- Click Properties
- Click Disk Cleanup
- Check items to delete
- Click OK
Storage Sense (Windows)
Set up automatic cleanup:
- Go to Settings > System > Storage
- Turn on Storage Sense
- Click Configure to customise what gets deleted
Mac Storage Management
- Click Apple menu > About This Mac > Storage
- Click Manage
- Review recommendations
Use Cloud Storage
Save files to OneDrive instead of your computer:
- Files are stored in the cloud
- Access from any device
- Frees up local space
- Files are backed up automatically
OneDrive Files On-Demand
Keep files in the cloud and download only when needed:
- Right-click the OneDrive icon in the system tray
- Click Settings > Sync and backup
- Enable Files On-Demand
What NOT to Delete
Never delete:
- Windows or System folders
- Program Files folders
- Anything you don't recognise
- Work files without backing them up
Need More Help?
If you've tried these steps and still need space, contact IT. You may need:
- A larger hard drive
- External storage
- Different storage solution
Need Help?
For storage help, contact helpdesk@netlumait.com.au or call 1300 521 162.
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