How to Use the Batch File Size Estimator
Whether you're organizing vacation photos or prepping a video editing project, you've probably wondered "will all these files actually fit on my drive?" A single file may look small, but once you're dealing with hundreds or thousands of them, the total can be far larger than expected — leading to an unpleasant surprise when a transfer suddenly runs out of space.
Select a file type and enter the count (or minutes, for video), and this tool calculates your estimated total size, then shows how many 64GB or 128GB drives or SD cards you'd need, or how much room you have left on a 1TB external drive.
Average File Size by Type
- Smartphone JPEG photo: ~4MB each
- DSLR RAW photo: ~25MB each
- 1080p video: ~130MB per minute
- 4K video: ~350MB per minute
These figures are averages based on typical compression and resolution settings — actual file sizes vary depending on your camera settings and compression method. Use this as a rough planning reference before you start transferring files.
Frequently Asked Questions
At roughly 4MB per smartphone photo (about 12MP), 1,000 photos come out to about 4,000MB, or roughly 3.9GB. Actual size varies with resolution and compression.
At about 130MB per minute for 1080p video, a 64GB drive (about 65,536MB) can hold roughly 500 minutes, or over 8 hours of footage.