Free Tool

iPhone Storage Calculator

Q: Does the iPhone storage size shown match actual usable space?

Not exactly. A '128GB' iPhone has 128 billion bytes of storage, which iOS reports as roughly 119 GB. iOS itself and pre-installed apps typically use 10-15 GB, leaving 104-109 GB for your content.

Find out exactly how many photos and videos your iPhone can hold based on your storage size, photo format, and usage habits.

Quick answer: A 128GB iPhone can hold approximately 30,000–50,000 HEIC photos or 15,000–25,000 JPEG photos after accounting for iOS and apps. Use this calculator to get an exact estimate for your specific iPhone model and settings.

1. Select Your iPhone Storage Size

2. Choose Your Photo Format

3. Adjust Your Usage

Storage used by iOS & apps 20%

Percentage of library that is video 10%

Video recording quality

Your Storage Estimate

102.4 GB available for media

            36,864
            estimated photos
          

68 minutes of video

Storage breakdown

iOS

Photos

Video

Free

iOS & Apps

Photos

Videos

Free Space

Clean duplicates and unwanted photos with Swype Photo Cleaner to maximize your capacity. The average user frees up 3–8 GB by removing clutter.

How We Calculate

Our iPhone storage calculator uses real-world average file sizes and standard iOS system requirements to estimate how many photos and videos your iPhone can hold.

Usable Storage

iPhones report storage in base-10 gigabytes. We subtract your selected percentage for iOS, system files, and installed apps to determine media-available space.

Photo Sizes

HEIC averages 2.5 MB (iPhone default since iOS 11), JPEG averages 5 MB, and Apple ProRAW averages 25 MB for a 48MP capture. Actual sizes vary by scene complexity.

Video Sizes

4K video at 30fps uses approximately 150 MB per minute with HEVC encoding. 1080p HD uses approximately 60 MB per minute. Slo-mo and ProRes use significantly more.

Split Calculation

We divide your available storage between photos and videos based on your selected video percentage, then calculate counts for each media type independently.

Frequently Asked Questions

How many photos can a 128GB iPhone hold?

A 128GB iPhone can hold approximately 30,000 to 50,000 photos in HEIC format or 15,000 to 25,000 in JPEG, depending on how much storage is used by apps, iOS, and videos. With 20% used by the system, you get about 102 GB for media.

Does the iPhone storage size shown match actual usable space?

Not exactly. A "128GB" iPhone has 128 billion bytes of storage, which iOS reports as roughly 119 GB. iOS itself and pre-installed apps typically use 10–15 GB, leaving 104–109 GB for your content. This calculator accounts for that with the "storage used by iOS & apps" slider.

Which photo format uses the least storage on iPhone?

HEIC (High Efficiency Image Container) is the most storage-efficient format, averaging about 2.5 MB per 12MP photo — roughly half the size of JPEG. It has been the default format on iPhones since iOS 11. ProRAW files are the largest at approximately 25 MB per photo but preserve maximum editing flexibility.

How can I free up photo storage on my iPhone?

The fastest way is to delete duplicate, blurry, and unwanted photos. Apps like Swype Photo Cleaner let you swipe through your library to quickly keep or delete photos. You can also enable "Optimize iPhone Storage" in iCloud Photos settings to store full-resolution originals in iCloud and keep smaller versions on your device.

Running Low on iPhone Storage?

Swype Photo Cleaner makes it fast and easy to find and delete unwanted photos. Swipe left to delete, right to keep. 100% free, 100% private.

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