What Is Taking Up My iCloud Storage? How to Find Out
To see exactly what is taking up your iCloud storage, open Settings > [your name] > iCloud > Manage Account Storage on an iPhone or iPad, where iCloud shows a color-coded bar and a ranked list of every category and app using space. This guide is for anyone staring at an "iCloud Storage Full" message who wants to find the real culprit before deciding whether to delete files or pay for more.
TL;DR
- The full breakdown lives in Settings > [your name] > iCloud > Manage Account Storage (or Manage Storage on older iOS).
- The three biggest space-eaters are almost always Backups, Photos, and Messages, in that rough order.
- iCloud storage (your 5 GB+ Apple cloud plan) is separate from the storage on the phone itself, do not confuse the two.
- Old device backups for phones you no longer use are the single most common waste, often several gigabytes each.
- iCloud has no duplicate or junk cleanup, so a tool like Cleanor helps trim what you sync up in the first place.
How do I see what is taking up my iCloud storage?
iCloud gives you an itemized breakdown if you know where to look. The view differs by device:
- On iPhone or iPad, open Settings, tap your name, then iCloud > Manage Account Storage (labeled Manage Storage on iOS 16 and earlier).
- On a Mac, open System Settings > [your name] > iCloud > Manage.
- On Windows, open the iCloud for Windows app and click Storage.
- On the web, sign in at iCloud.com and open Account Settings to see the same bar.
At the top you'll see a color-coded bar splitting your plan into categories: Photos, Backups, Documents, Messages, Mail, and individual apps. Below it is a list sorted largest-first. Tap any item to drill in, for example Backups or Photos. This list is the ground truth.
Why is my iCloud storage full when I barely use it?
This usually comes down to mixing up two separate things. iCloud storage is the cloud space tied to your Apple Account (the free 5 GB or a paid iCloud+ plan). iPhone storage is the physical space inside your phone. Deleting apps off your phone does nothing for iCloud, and clearing iCloud does nothing for a full phone. If you're battling the on-device version, see what is taking space when iCloud storage is full but Photos are off.
The second reason is that iCloud quietly accumulates data you forgot you were syncing. Each new device creates its own backup, photos and videos sync the moment iCloud Photos is on, and message history can sync too. None of it announces itself, so a "barely used" account fills from background syncing rather than anything you actively saved.
Here's how the typical breakdown stacks up:
| Category | Why it grows | Where to manage it |
|---|---|---|
| Backups | One per device; old phones still counted | Manage Account Storage > Backups |
| Photos | Full-resolution photos and videos sync | Settings > [your name] > iCloud > Photos |
| Messages | Attachments from every chat sync | Settings > [your name] > iCloud > Show All > Messages |
| Large attachments in iCloud Mail | iCloud.com Mail or Mail app | |
| App data | Documents, app saves, third-party app sync | Manage Account Storage (per app) |
What usually takes up the most iCloud storage?
In practice, three categories dominate.
Backups. Usually number one, and the waste hides in old devices. iCloud keeps a backup for every iPhone and iPad ever signed into your account, so a backup from a phone you traded in two years ago can still sit there using several gigabytes. Tap Backups to see each one with its size and last-backup date.
Photos. If iCloud Photos is on, every full-resolution photo and video lives in the cloud, and a few years of 4K clips and Live Photos can run into tens of gigabytes. It's data you want to keep, but it's also where duplicates and near-identical bursts pile up invisibly. For how the phone and cloud copies relate, read how to delete photos from your phone but keep them in the cloud.
Messages. When Messages in iCloud is enabled, your whole conversation history syncs, including every photo and video anyone has texted you, which gets surprisingly heavy over the years. You can clear it without losing your chats, and our guide on clearing WhatsApp and Telegram storage without losing chats covers the same principle.
Mail, Notes attachments, and app data round out the list, but start with the top three.
How do I free up iCloud storage once I find the culprit?
Once Manage Account Storage tells you the offender, the fix is targeted:
- Delete old device backups. Go to Manage Account Storage > Backups, tap a backup for a device you no longer use, and choose Turn Off and Delete from iCloud. Usually the fastest multi-gigabyte win.
- Trim your current backup. Tap your active device's backup and toggle off large apps under Choose Data to Back Up.
- Clean your photo library. In Photos, delete duplicates via Albums > Utilities > Duplicates, then empty Recently Deleted. Deletions only free iCloud space after the 30-day window, or once you remove them there manually.
- Clear large Message attachments. Open a conversation, tap the contact name, scroll to Photos and large attachments, and delete the bulky ones.
- Empty iCloud Mail. Delete large-attachment emails and empty the Trash folder.
Give iCloud a few minutes to recalculate, the bar at the top of Manage Account Storage updates as space is reclaimed.
Is it safe to delete iCloud data to free up space?
Mostly yes, but the safety depends entirely on what you delete, and a couple of items deserve real caution.
Natively, deleting an old device backup is safe as long as it belongs to a phone you no longer use, that data is just a frozen snapshot of a retired device. Deleting Mail and clearing Message attachments is also low-risk. The dangerous one is Photos: because iCloud Photos keeps a single synced library, deleting a photo in iCloud removes it from every signed-in device, so confirm a photo exists somewhere else first. If you rely on Optimize iPhone Storage or Google Photos, read the truth about Optimize iPhone Storage and Google Photos free up space so you know what stays in the cloud.
A cleaner like Cleanor adds the piece iCloud lacks: it scans your photo library on the device for exact duplicates, near-identical shots, and oversized videos, then lets you review and remove them in batches before they sync up, keeping both your phone and iCloud leaner. What a cleaner cannot do is reach into iCloud's server-side backups or delete cloud data directly, Apple does not expose that to third-party apps, and it can't expand your free 5 GB. Any app claiming to "clean iCloud" by magic is overselling, the real levers are the native Manage Account Storage controls plus smarter local housekeeping. Be wary of tools that ask for your Apple Account password; legitimate cleaners never need it.
FAQ
Where do I see what is taking up my iCloud storage?
Open Settings, tap your name, then iCloud > Manage Account Storage on an iPhone or iPad. You'll get a color-coded bar plus a list of every category and app ranked by size. On a Mac it's under System Settings > [your name] > iCloud > Manage.
Why is my iCloud storage full when my phone has space?
iCloud storage and phone storage are completely separate. iCloud is your cloud plan (5 GB free or a paid iCloud+ tier), while phone storage is the space inside the device. A full iCloud usually comes from photos, backups, and message attachments syncing in the background, not from anything stored on the phone itself.
Does deleting photos from iCloud delete them from my iPhone?
Yes, if iCloud Photos is turned on. Because it keeps one synced library across all your devices, deleting a photo from iCloud removes it from every signed-in iPhone, iPad, and Mac. Make sure you have another copy before deleting anything from a synced library.
What takes up the most iCloud storage?
For most people it's device backups, the photo library, and Messages, roughly in that order. Old backups from phones you no longer use are the most common waste, often several gigabytes each. Manage Account Storage shows your personal ranking instantly.
Where to start
If you opened this guide because of an "iCloud Storage Full" alert, start at Settings > [your name] > iCloud > Manage Account Storage and look at the top three items. Nine times out of ten, deleting an old device backup and clearing duplicate photos reclaims more space than a new paid plan would buy. Our walkthrough of what to delete first when storage is full puts these moves in highest-impact order.
From there, the smartest long-term fix is syncing less junk. Cleanor scans your library for duplicate and near-identical photos and oversized videos so you can clear them before they upload, keeping both your iPhone and iCloud lighter. See how it works on our clean-up-phone-storage solution page, or get the app from the Cleanor for iOS page. Let iCloud store what matters, and stop paying to back up clutter.