Storage Capacity: How Many Photos, Songs, and Hours of Video Fit on a Phone or Drive?
October 29, 2026
To estimate how many files fit in a storage space, divide the available space by the typical file size. Use decimal gigabytes (1 GB = 1,000 MB) for simplicity, as device makers do. A phone sold as 128 GB shows about 110 to 119 GB after the operating system and its own files, and usable space can be around 100 GB.
Typical sizes: a 12-megapixel JPEG photo is 3 to 5 MB (say 4 MB), a RAW photo about 25 MB, a 4-minute MP3 song at 128 kbps is 3.84 MB (128 kbps = 16 KB/s × 240 s), and video size depends on the bitrate: 1 Mbps = 0.125 MB per second = 450 MB per hour.
Skip the math and get your answer instantly:
Open the Data Converter →How Many Fit in 100 GB
Photos at 4 MB: 100,000 ÷ 4 = 25,000. RAW photos at 25 MB: 4,000. Songs at 3.84 MB: 26,042. 1080p video at 8 Mbps (1 MB/s = 3.6 GB per hour): 27.8 hours. 4K video at 25 Mbps (11.25 GB per hour): 8.9 hours. Documents at 0.2 MB: 500,000. High-quality music (lossless FLAC at about 30 MB for 4 minutes): 3,333 songs. Podcasts at 1 MB per minute: 1,667 hours.
| Content | Typical size | Count in 100 GB |
|---|---|---|
| JPEG photo (12 MP) | 4 MB | 25,000 |
| RAW photo | 25 MB | 4,000 |
| MP3 song (128 kbps, 4 min) | 3.84 MB | 26,042 |
| FLAC song (4 min) | 30 MB | 3,333 |
| 1080p video at 8 Mbps | 3.6 GB per hour | 27.8 hours |
| 4K video at 25 Mbps | 11.25 GB per hour | 8.9 hours |
Cloud Plans and Backups
If you take 30 photos a day at 4 MB, that is 120 MB per day or 43.8 GB per year, so a 200 GB cloud plan lasts about 4.5 years before cleanup. A family of four taking 4K video could fill 100 GB in a few weeks. Backups also need space: the 3-2-1 rule suggests three copies of important data. Compression and settings matter: HEIC photos are about half the size of JPEG; lowering the video resolution from 4K to 1080p cuts the file size by about two-thirds; streaming instead of downloading saves local space.
Freeing Space
Delete duplicates and blurry shots, offload unused apps, clear caches, and move old files to a computer or cloud. Check what consumes space in the storage settings. Large items are often video and messaging attachments. Avoid filling the device to more than about 90%, as performance and updates may suffer.
Binary vs. Decimal
Some systems report storage in GiB (1,073,741,824 bytes): 128 GB (decimal) = 119.2 GiB. The difference is about 7% at this size. The estimates above use decimal, so you may get a few percent fewer files than the numbers suggest.
Frequently Asked Questions
How many photos fit in 100 GB?
About 25,000 at 4 MB each.
How much storage does an hour of 4K video use?
About 11 GB at 25 Mbps.
How do I convert bitrate to file size?
Mbps divided by 8 gives MB per second.
Why does my 128 GB phone show less?
The operating system takes space, and some tools use binary units.
How can I save space?
Use compressed formats, delete duplicates, and offload to the cloud.