To find out how much of your 5 GB iCloud backup storage space you are currently using and how much you have still have available to use, please follow these steps:
On Mac and Windows:
- Open the iCloud Preferences (Mac) or Control Panel (Windows).
- The bar across the bottom shows how much iCloud storage is currently being used and how much is still available.
- Tap the Settings application icon and then tap iCloud.
- Tap Storage & Backup.
- The Storage menu will provide you with the information you need to discover how much iCloud storage is currently being used.