Why convert 001 to 002?
A .001/.002 pair (and any further parts) is a single file cut into sequentially numbered chunks - .001 holds the first N bytes and .002 holds the next N bytes of the same source. Neither segment can become the other because they carry different data. The .001 extension is only an order marker with no format of its own.
How to convert 001 to 002
7-zip FREE
Place all numbered parts in one folder and open .001 in 7-Zip - it reads the siblings automatically and joins them into the original file.
WinRAR APP
Open .001 in WinRAR with all parts present, then use Extract To to rebuild the original file from all segments.
PeaZip FREE
Open .001 in PeaZip with all numbered parts present; it assembles the set and extracts the original content.
Programs that convert 001
About these formats
.001
Split / multi-volume archive - first part (.001)
A 001 file is the first chunk of a larger file split into numbered parts (.001, .002, .003 ...) for upload, email, or size-limited storage. You cannot open the .001 alone - put every part…
Open .001 details →
.002
Split File / Multi-volume Archive - Second Part (.002)
A .002 file is the second piece of a larger file that was split into numbered parts (.001, .002, .003 …). You cannot open the .002 directly - put all parts in one folder and open the first…
Open .002 details →Quality & what to watch
- Every numbered part must be present with unbroken sequential numbering - a missing segment means the join fails and the lost bytes cannot be reconstructed.
- Programs sometimes listed for '001 to 002 conversion' on file-extension sites are generated automatically and correspond to no real operation.
- If the joined result is itself an archive (ZIP, RAR, 7z), extract it after joining to reach the original files.
Frequently asked questions
Why do some sites list programs for 001-to-002 conversion?
I have only the .001 file. Can I do anything with it?
.001 is the first chunk of a larger file; without the remaining parts the original cannot be rebuilt.What if I want a different archive format from the joined file?
.zip or .7z using 7-Zip or PeaZip.
