Break a File Into Parts
Divide a Large File Into Manageable Chunks
Need to use Break a File Into Parts right now?
Works on any file type — archives, videos, or disk images alike.
Drop any archive or large file to split
Processed locally in your browser — never uploaded
Splits any file into raw byte-range parts named .001, .002, etc. Reassemble by concatenating the parts in order (e.g. `cat file.001 file.002 > file` on Mac/Linux, or `copy /b file.001+file.002 file` on Windows) — this is a generic byte split, not a self-extracting multi-volume archive.
Features
- Runs entirely in your browser
- Privacy-first — your data is never uploaded
- Real-time, instant results
- 100% free, no sign-up required
- Works on desktop, tablet, and mobile
- No installation needed
Who uses this tool?
About Break a File Into Parts
A large archive or file that exceeds an upload limit, an email attachment cap, or a USB drive's file size restriction sometimes just needs to be broken into smaller pieces to move around. This tool splits any file into raw byte-range parts, each capped at a size you choose.
This is a generic byte split, not a self-extracting or archive-aware multi-volume format — it works on literally any file (an archive, a video, a disk image) by cutting it at fixed byte boundaries into sequentially numbered parts (.001, .002, and so on).
To reassemble the original file, the parts need to be concatenated back together in order — on Mac or Linux, `cat file.001 file.002 > file` does this; on Windows, `copy /b file.001+file.002 file` achieves the same result from the command line.
Everything happens locally in your browser — the file is read and split into parts entirely on your device, with nothing uploaded to a server during the process.
How it works
- Upload any large file. Works on archives, videos, or any file type.
- Set the max size per part. Choose your target size limit in MB.
- Download the numbered parts. Reassemble later by concatenating them in order.
Examples
Splitting a large file to fit a size limit
Input
500MB file, 100MB per part
Output
5 parts named .001 through .005