The “storage almost full” message usually arrives with an upgrade button attached. Before you tap it, it helps to know how much space you actually use, how fast it grows, and whether a cleanup would keep you on the plan you already have.
Enter your photos, videos, backups, email and files to see how much storage you need now and in 12 months, and the smallest iCloud+, Google One or Dropbox plan that fits. The calculator also shows which category takes up the most space, so you can try a cleanup before paying for more.
Get real numbers in two minutes
Estimates work, but the exact figures are one screen away:
- iPhone: open Settings › your name › iCloud to see what uses your iCloud storage. For photo and video counts, scroll to the bottom of Library in the Photos app.
- Google: open one.google.com/storage to see how much Gmail, Google Drive and Google Photos each use. They share the same 15 GB free allowance.
- Dropbox: open your account settings and look at the Plan section to see space used.
If a number is available, switch that row to I know the size for the most accurate result.
How the estimate is worked out
| Item | Size used in the calculator |
|---|---|
| iPhone photo (HEIC) | About 2.5 MB |
| Android or JPEG photo | About 4 MB |
| 48 MP photo | About 6 MB |
| 1 minute of 1080p at 30 fps | About 60 MB |
| 1 minute of 4K at 30 fps | About 170 MB |
| 1 minute of 4K at 60 fps | About 400 MB |
Video figures follow the sizes iPhone shows under Settings › Camera › Record Video for the default High Efficiency format. Video recorded as Most Compatible, and on many Android phones, is roughly twice as large, so tick that box if it applies. The 12-month figure adds your new photos and video at the same rates.
Plan sizes and prices
| Service | Free | Paid plan sizes (US list price per month, November 2026) |
|---|---|---|
| iCloud+ | 5 GB | 50 GB $0.99 · 200 GB $2.99 · 2 TB $9.99 · 6 TB $29.99 · 12 TB $59.99 |
| Google One | 15 GB | 100 GB $1.99 · 200 GB $2.99 · 2 TB $9.99, plus larger and AI plans |
| Dropbox | 2 GB | Plus 2 TB from $9.99 billed yearly · larger plans available |
Prices differ by country and change from time to time, and Google often discounts the first months. Check the provider’s page before you buy. iCloud+ and Google One plans can be shared with up to five family members, so a shared plan needs room for everyone’s photos and backups. Dropbox Plus is for one person; Dropbox sells a separate Family plan.
Try a cleanup before you upgrade
The biggest category in your result is the best place to start:
- Videos: move large videos off your phone without losing them.
- Photos: remove duplicates on iPhone or in Google Photos.
- Backups: delete old iCloud backups safely, especially for phones you no longer use.
- Email: find old and large Gmail messages with the Gmail Cleanup Search Builder.
- Everything at once: clean up iCloud, Google and Dropbox storage in one pass.
Cloud storage is not a backup on its own. Deleting a photo from a synced library deletes it everywhere, so back up photos before deleting them.
Related guides
- iCloud storage full: what to delete first
- How to free up Google Drive storage
- How to free up Dropbox space
Plan sizes and US prices checked against Apple, Google and Dropbox pages in November 2026.
Sources
- Apple Support: iCloud+ plans and pricing
- Google One: Plans
- Dropbox: Plans