Split a File · into parts
Cut any file into numbered parts — .001, .002, .003 — that fit email, chat or FAT32 size limits. Instant for any size, and nothing is uploaded.
MB means 1,000,000 bytes, as upload limits count it. Email attachments grow by about a third when sent, so for a 25 MB mail limit pick 18 MB parts.
How to split a file into parts
- Drop the file onto the box above, or click to choose it.
- Pick a part size, such as 18 MB to fit a 25 MB email limit or 4 GB for a FAT32 USB stick, or choose how many parts you want.
- Save the parts one by one, all at once, or straight into a folder in Chrome and Edge.
Instant, for any size
The file is never loaded into memory or uploaded. Each part is a slice of the original read straight from your disk when you save it, so a 50 GB video splits as quickly as a 5 MB one. Joining the parts gives back the original file byte for byte: splitting does not compress, encrypt or change anything.
How to join the parts again
- In the browser: drop all the parts onto Join Split Files.
- 7-Zip, PeaZip, WinRAR: open the
.001file and extract; the other parts are found automatically. - macOS and Linux:
cat name.ext.0* > name.extin Terminal, from the folder with the parts. - Windows:
copy /b name.ext.001 + name.ext.002 name.extin Command Prompt, listing every part in order.
Splitting vs. a split ZIP
This tool cuts the file as it is, so the recipient needs the parts and a way to join them. If you also want compression or a password, use Zip & Unzip and choose a split size there: it produces a split archive that 7-Zip opens directly.