Google Storage Full? Find What's Really Using Your 15GB
Short answer
Google's free 15GB is a single pool shared by Gmail, Drive and Photos — not 15GB each. Go to one.google.com/storage to see the breakdown by service. In most cases one service accounts for the large majority, and fixing that one solves the problem. Photos is the usual culprit, followed by Gmail attachments.
On this page
The warning almost never matches the cause. You get “Gmail storage is full” and go hunting through your inbox, when the real problem is four years of 4K video backed up from a phone you no longer own.
That happens because Google’s free 15GB is one shared pool. Gmail, Drive and Photos all draw from it. Deleting the wrong thing wastes an afternoon and frees almost nothing.
See the breakdown first
This takes about thirty seconds and tells you exactly where to spend your effort.
- Go to one.google.com/storage — it works whether or not you pay for Google One.
- You will see a bar split into Google Drive, Gmail and Google Photos, with a figure beside each.
- Note which one is largest. That is the only service worth touching today.
Do not skip this. The split is rarely what people expect.
What counts, and what doesn’t
A lot of confusion comes from items that look like they should count but don’t — and items that count invisibly.
| Item | Counts toward 15GB? |
|---|---|
| Gmail messages and attachments | Yes, including Spam and Trash |
| Files you upload to Drive | Yes |
| Google Docs, Sheets, Slides | No |
| Google Photos backups | Yes, since June 2021 |
| Photos backed up before June 2021 in High quality | No — grandfathered |
| Shared files owned by someone else | No, unless you copy them |
| WhatsApp backups (Android) | Yes, since 2024 |
| Android app backups and device backups | Yes, and they’re hidden from Drive |
That last row catches people out regularly. If the three service figures don’t add up to your total, the gap is usually hidden backup data.
Route yourself to the right fix
Once you know the culprit, the work is specific to that service.
If Google Photos is the largest
This is the most common outcome, and the most reclaimable. Photos backed up in Original quality are stored at full size — a single minute of 4K video is roughly 350MB.
Open the Photos app, go to your profile picture, then Photos settings → Backup → Backup quality. Switching to Storage saver affects future backups only, so also run Manage storage, which surfaces large videos, blurry shots and screenshots as separate categories you can clear in bulk.
Our guide on why Google Photos uses so much storage covers the full cleanup.
If Gmail is the largest
It will be attachments, essentially always. Message text is negligible — a decade of plain email is a few hundred megabytes at most.
Search has:attachment larger:10M in Gmail and sort through what comes back. The
full method, including how to bulk-delete safely, is in
how to find and delete large emails.
If Drive is the largest
Open Drive, then click Storage in the left sidebar. This view sorts every file by size, largest first — which is the single most useful screen in Drive and nearly invisible in the normal interface.
Work down from the top. Video files and disk images dominate most accounts.
If the numbers don’t add up
If Gmail, Drive and Photos together are well short of your reported total, hidden data is the difference. Android device backups, app data and WhatsApp backups all consume quota without appearing in Drive’s file list.
In the Drive app on Android, open the menu and choose Backups to see them. Backups from phones you no longer own are safe to delete.
Empty the trash in all three places
Deleting does not immediately free space. Every service keeps a 30-day recycle bin, and everything in it still counts against your quota.
- Gmail — open Trash, then Empty Trash now. Check Spam too.
- Drive — open Trash, then Empty trash.
- Google Photos — open Bin, then Empty bin.
All three. This is the single most common reason people believe the cleanup “didn’t work”.
Then wait
Google’s storage figure is not recalculated in real time. After a large deletion it commonly takes several hours, and can take up to 72, before the number reflects reality.
If you have emptied every trash and the figure is unchanged after a day, that is expected behaviour — not a failure. The detail on why is in Google storage still full after deleting files.
What not to bother with
- Deleting individual emails. Without attachments they are kilobytes. You could delete ten thousand and free less than one video.
- Third-party “Google storage cleaner” apps. They request full access to your account to do what the storage manager does natively.
- Deleting Google Docs. They don’t count toward your quota at all.
What to expect
A typical account that has never been cleaned recovers 3–8GB from Photos, 1–3GB from Gmail attachments, and often a surprise 2GB from an old device backup. That is usually enough to drop comfortably back under the limit.
If it isn’t — and you genuinely use the space — upgrading to 100GB is a reasonable outcome rather than a defeat.