Apple gives every iCloud account just 5GB of free storage, so it doesn’t take long for photos, device backups, and old messages to fill it up and trigger that “iCloud Storage Almost Full” alert. Your first instinct might be to tap “Upgrade” and start paying for iCloud+, but in most cases you can clear out enough space to stop the warnings without spending a cent.
Table of Contents
This guide walks through exactly where that storage usually goes, how to see the breakdown on your iPhone or Mac, and the specific things to delete or turn off to reclaim space fast.
Quick Answer
Go to Settings > [your name] > iCloud > Manage Account Storage (or Manage Storage) to see what’s using space, then clear out old device backups, delete large or duplicate photos and videos, trim Messages attachments, and turn off iCloud sync for apps you don’t need backed up. Most people free up several gigabytes this way without paying for more storage.
See What’s Actually Filling Up Your iCloud
Before deleting anything, find out where your storage is going. On an iPhone or iPad, open Settings, tap your name at the top, then tap iCloud, then Manage Account Storage (on older iOS versions this is just called Manage Storage). You’ll see a breakdown by category — Photos, Backups, Messages, iCloud Drive, Mail, and individual apps — along with how much space each one is using.
On a Mac, open System Settings, click your Apple ID at the top, then iCloud, then Manage. You’ll get the same kind of breakdown. This step matters because the fix is different depending on whether backups, photos, or messages are the real culprit — don’t start deleting things blindly.
The Biggest Space-Savers
Old device backups: iCloud automatically backs up your iPhone, and backups from devices you no longer use (an old phone, a kid’s hand-me-down iPad) often sit there taking up gigabytes. In Manage Account Storage, tap Backups, select an old or unused device, and tap Delete Backup.
Photos and videos: this is usually the single biggest category, and it’s also the one people misunderstand. Settings > [your name] > iCloud > Photos > Optimize iPhone Storage only changes what’s kept on your device — it swaps full-resolution files for smaller, space-saving versions locally so your phone has more free space. It has no effect on your iCloud usage: your full-resolution originals are uploaded to and stored in iCloud either way, whether this setting is on or off. The only way to actually cut your iCloud Photos usage is to delete things: go through your library and remove duplicates, burst-mode outtakes, and old screenshots, then empty the “Recently Deleted” album, since deleted items still count against your storage for roughly a month until that album is cleared or you empty it manually.
Messages: in Settings > iCloud, if Messages is listed under Apps Using iCloud, large group chats with lots of photos and videos can quietly use several gigabytes. Go to Settings > General > iPhone Storage > Messages to see conversation-by-conversation size, and delete old threads or attachments you don’t need.
Mail and iCloud Drive: if you use an @icloud.com email address, search Mail for large attachments and delete old messages, then empty the Trash folder (deleted mail isn’t actually gone until Trash is emptied). In iCloud Drive, sort files by size and clear out anything you no longer need — this is also the fastest way to find a single huge file you forgot about.
Apps you don’t need backed up: in Manage Account Storage, scroll to “Apps Using iCloud” and turn off syncing for apps whose data you don’t care about losing (games, one-off utilities). This stops them from using iCloud space going forward.
Free Alternatives If You’re Still Tight on Space
If you’ve cleaned house and still need more room, you don’t have to pay Apple. You can move photos and videos off iCloud entirely by importing them to a computer or external drive via a cable or the Photos app, then deleting the iCloud copies. Several other cloud services offer a separate free storage tier (Google Photos and Google Drive, for example, include free storage you can use for backups alongside iCloud) — just know that free tiers and their limits change over time, so check current terms before relying on one as your main backup.
You can also back up your iPhone locally instead of to iCloud: connect it to a Mac or Windows PC and back up through Finder (on recent macOS) or the Finder/iTunes equivalent, which stores the backup on your computer’s drive instead of counting against your iCloud storage.
Tips / Common Mistakes
Don’t assume turning on Optimize iPhone Storage frees up iCloud space — it only affects what’s stored locally on your device. Your full-resolution originals are uploaded to iCloud regardless of this setting, so if iCloud itself is full, you need to delete photos, not just optimize local storage.
Don’t just delete photos from your phone and assume iCloud space frees up instantly — with iCloud Photos enabled, deletions sync across devices, but the item sits in Recently Deleted for roughly a month before it’s really gone, so empty that album if you need space back right away.
Don’t ignore old device backups. People often forget they have backups for phones they sold or traded in years ago, and those backups keep using iCloud space until manually deleted.
Don’t turn off iCloud Backup entirely as a shortcut unless you have another backup plan — it’s the easiest way to restore your phone if it’s lost, stolen, or damaged, so disable it only after setting up a local backup through your computer instead.
Check back periodically. Storage fills up gradually, so a quick look at Manage Account Storage every few months prevents the “almost full” warning from sneaking up on you again.
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iCloud storage almost full FAQs
How much free iCloud storage do I get?
Every Apple ID comes with 5GB of free iCloud storage, shared across backups, Photos, Mail, iCloud Drive, and app data.
Does turning on Optimize iPhone Storage free up iCloud space?
No. Optimize iPhone Storage only keeps smaller versions of photos and videos on your device to save local space — full-resolution originals are still uploaded to and stored in iCloud regardless of this setting. To reduce iCloud usage, you need to delete photos or videos, not just enable this setting.
Why does deleting photos from my iPhone not free up iCloud storage right away?
Deleted photos move to the Recently Deleted album and stay there for roughly a month before being permanently removed, so they still count against your storage until you empty that album.
What’s the fastest way to free up iCloud storage?
Deleting old device backups you no longer need is usually the quickest win, since a single old backup can be several gigabytes. Check Settings > [your name] > iCloud > Manage Account Storage > Backups.
Will turning off iCloud Backup delete my data?
No, turning off iCloud Backup just stops future backups from being created — it doesn’t delete photos, messages, or app data already on your device. But without a backup, you could lose that data if your device is lost or damaged, so set up a local backup to your computer first.
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