iCloud & iCloud Photos · Storage Studio and iCloud
How can I see how much of my cloud storage is already online-only?
Short answer: Open Storage Profile from the More menu (•••) and check Connected cloud accounts: once analysed, it shows file types, recent use and how much is already online-only. It refreshes in the background and is cached for a day.
Open Storage Profile from the More menu (•••) and look at Connected cloud accounts. Once it's analysed an account, it shows the mix of file types, how much you've used recently, and how much is online-only — already off your disk.
The analysis runs automatically in the background and is cached for a day, so the numbers are there when you open the screen. Very large accounts are sampled rather than read in full. iCloud and other synced folders on your Mac are measured too.
If a lot is still downloaded, see freeing iCloud files.