Free tool · No install
How much iPhone storage are you wasting?
A typical iPhone photo library wastes 15–30% of its storage on duplicates, blurry frames, old screenshots, and forgotten video clips. This free calculator estimates that number in GB for your library — enter your photo count, iPhone model, and shooting habits, and it returns a per-category breakdown. Nothing is uploaded; the math runs in your browser.
Your estimated photo waste
Based on documented averages across iPhone photo libraries. Real number after a scan will be different — usually within ~20%.
That’s roughly 1,938 songs or 22 min of 4K video.
Big enough that you’d need iCloud’s 50 GB plan — about $11.88/yr you wouldn’t otherwise pay.
Estimates use documented averages for HEIC photo sizes (1.8–3.6 MB per shot depending on model), typical duplicate ratios (8–15% of libraries), and 4K video bitrate (~6 MB/sec at 30 fps). Real numbers vary; a free scan in AiCleanerPro gives you the exact figure.
How the math works
Where the estimates come from
The calculator uses documented averages from public iPhone photo library research. None of your data is collected, saved, or sent anywhere — the math runs in your browser.
Photo size: An HEIC photo from an iPhone 13 averages 2.4 MB; iPhone 15 Pro averages ~3.6 MB at default settings. The calculator scales by your iPhone model.
Duplicate ratio: Studies of consumer iPhone libraries show 8–15% of photos are exact or near-duplicates, climbing if you shoot bursts often or save heavily from WhatsApp.
Screenshots: Average ~0.55 MB each; share of library grows ~2% per year as screenshots accumulate (login codes, receipts, memes, directions).
4K video: 4K30 records at ~360 MB/min. Most creators forget 10–20 clips per year (test takes, screen recordings, failed B-roll) at an average ~70 seconds each.
File format matters too: an iPhone left on Most Compatible saves JPEGs at roughly double the size of the HEIC equivalent, which inflates every line above. See HEIC vs JPEG on iPhone for the difference in gigabytes.
The exact number for your library only shows up after an on-device scan. AiCleanerPro does that scan in about 30 seconds and keeps everything local.
Worked example
A 10,000-photo library on an iPhone 14, four years old
Here is the arithmetic the calculator runs, spelled out for one common setup: 10,000 photos on an iPhone 14 or 15 (3.0 MB average HEIC), four years of use, heavy WhatsApp saving, occasional burst shooting, and no 4K video. Every input moves the lines, but the shape stays the same.
| Category | How it is estimated | Result |
|---|---|---|
| Exact duplicates | 14% (8% base + 2% bursts + 4% chat) × 3.0 MB | ~4.1 GB |
| Near-identical shots | 14% (10% base + 4% bursts) × 3.0 MB | ~4.1 GB |
| Burst sequences | 5% of 10,000 photos × 3.0 MB | ~1.5 GB |
| Blurry / out-of-focus | 3% of 10,000 photos × 3.0 MB | ~0.9 GB |
| Old screenshots | 16% (8% + 2%/year × 4) × 0.55 MB | ~0.9 GB |
| WhatsApp & chat saves | 12% of the library × 1.3 MB | ~1.5 GB |
| Forgotten video clips | 8 clips/yr × 4 yrs × 45 s × 1.1 MB/s | ~1.5 GB |
Total for this library: roughly 14.5 GB of reclaimable storage. Turn on the 4K video option and the video line alone jumps past 25 GB, because 4K30 records at about 6 MB per second — a single forgotten 10-minute clip is 3.6 GB.
Estimates are not measurements. In our own controlled test, an untouched 12,148-item library gave up 8.6 GB to the widest-coverage scanner and 1.4 GB to Apple's Duplicates album alone — the full 6-app benchmark has the per-app numbers and where the hidden space actually sat.
Reading your result
What to do with the number
Under 3 GB: not worth a dedicated pass
A small or well-maintained library. Run Apple's free Duplicates album (Photos → Albums → Utilities → Duplicates) and stop there. If storage is still tight, the culprit is apps or video, not photos — the iPhone storage full checklist ranks every fix by how much it actually returns.
3–10 GB: one cleanup session
The typical range. Duplicates and screenshots will be most of it. Start with deleting duplicate photos — highest volume, lowest risk, since a duplicate by definition leaves the original in place.
Over 10 GB: video is probably driving it
Past roughly 10 GB the estimate is usually dominated by 4K clips: one minute of 4K30 is about 360 MB, more than 100 photos. Clear those first — the 4K video cleanup guide covers duplicate takes and forgotten screen recordings, and the creator workflow covers culling a full shoot.
If your photos live in Google Photos too
This calculator only models the on-device iPhone library. Photos backed up to Google Photos consume a second, separate quota, and duplicates there survive an iPhone cleanup. Our Google Photos duplicate finder covers that side.
FAQ
Calculator questions, answered
How accurate is the iPhone photo storage calculator?
It is an estimate, not a measurement. The calculator applies published average file sizes and duplicate rates to the numbers you enter, so it lands within roughly 20–30% of a real scan for a typical library. It cannot know how many of your photos are bursts, how aggressively you already delete, or how much of your library is video. The only exact figure comes from an on-device scan of your actual library.
Does the calculator upload or store my data?
No. Every calculation runs in your browser using JavaScript. Nothing you type is sent to a server, saved to a database, or logged. Close the tab and the numbers are gone.
Why is my estimate higher than what iPhone Storage settings shows?
Settings → General → iPhone Storage shows what your photo library currently occupies. The calculator estimates the reclaimable share of that — duplicates, near-duplicates, blurry frames, screenshots, and forgotten video. If iCloud Photos is set to Optimize iPhone Storage, your device also holds smaller previews rather than full-resolution originals, so the on-device number looks smaller than the true library size.
How many duplicate photos does a typical iPhone library have?
Studies of consumer libraries put exact and near-duplicates at 8–15% of all photos, and the share rises with burst shooting and heavy WhatsApp or Telegram saving. On a 10,000-photo library that is 800–1,500 photos, or roughly 2–4 GB at modern HEIC sizes.
What counts as wasted photo storage?
Four categories account for nearly all of it: exact and near-duplicate photos, blurry or out-of-focus frames, screenshots you never revisited, and video clips you forgot you shot. None of them carry information you would miss, and together they are usually 15–30% of a mature photo library.
Once you know the number, what next?
A few practical reads for cutting the waste down.