Join .001 Files Online - Merge Split File Parts Free

Drop all the parts here or browse Select every part at once - add SHA256SUMS.txt or a .sha256 file to verify .001 .002.part1.part01.aa .ab.sha256

Missing parts spotted SHA-256 verified Nothing is uploaded

Split file

Parts in order

#	Part	Size	Status

Verify SHA-256Add a SHA256SUMS or .sha256 file to check OFF

Save the joined file

One download with the original name.

Parts0

Joined size0 B

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Split a file instead

How to join .001 files online

Drop all the parts. Select every part at once - .001, .002, .003 and so on. Add the SHA256SUMS or .sha256 file too if you have one.

Check the list. The parts are sorted by number. Missing, doubled or cut-off parts are flagged before anything is joined.

Join. Press Join. The original file is rebuilt in your browser and verified against the checksum file if you added one.

Save or open it. Download the joined file, save it into a folder, or open a joined archive in the Archive Extractor.

Need to send a big file yourself? The File Splitter cuts it into parts that fit email, Discord or a FAT32 stick.

Why use this joiner

Right order, always

Parts are sorted by number, not by how you picked them - .010 comes after .009.

Gaps spotted

Missing, doubled and cut-off parts are flagged before a broken file is made.

Verified

Add SHA256SUMS.txt and every part plus the result is checked.

Knows the result

The joined file is recognised by its first bytes - ZIP, 7Z, ISO, MP4, PDF and more.

Big files welcome

Parts are joined by reference, so even 20 GB is no strain on memory.

Private

Everything happens in your browser - the parts are never uploaded.

Which split files can be joined?

Plain splits are joined here; archive volumes are opened by an archiver instead.

Part names	Made by	What to do
.001, .002, .003	7-Zip, HJSplit, Total Commander, File Splitter	Join here
.part1.mp4, .part2.mp4	File splitters, upload sites	Join here
.mkv.part01, .mkv.part02	File hosts, download managers	Join here
.aa, .ab, .ac	Linux and Mac `split`	Join here
.z01, .z02 + .zip	WinZip, 7-Zip (spanned ZIP)	Open all parts in the Archive Extractor
.part1.rar, .r00	WinRAR volumes	Open part 1 in WinRAR or 7-Zip with all parts in one folder

After joining

The joined file is exactly the file that was split.

An archive such as .zip, .7z or .rar opens in the Archive Extractor, or browse it first in the 7Z File Viewer or ZIP File Viewer. Disc images open in the ISO File Viewer.

ZIP still will not open after joining? A part was probably damaged on the way - try ZIP Repair, or ask the sender for the SHA-256 and compare it in the Checksum Calculator.

Frequently Asked Questions

A .001 file is the first piece of a bigger file that was cut into parts - by 7-Zip, HJSplit, Total Commander or a file splitter. The next pieces are .002, .003 and so on.

On its own a part is not a usable file. All parts joined in order give back the original, for example movie.mkv or backup.zip.

Join them first: drop all the parts on this page and press Join. You get the original file - the name before .001 tells you what it is.

If it is an archive such as file.zip.001 or file.7z.001, open the joined file in the Archive Extractor to get the files inside.

Select all of them together - Ctrl+A in the file picker works - and drop them here. The parts are put in the right order automatically, whatever order you selected them in.

Press Join and save the result.

A gap in the numbers (say .001, .002, .004) is reported and joining is blocked, because the result would be broken.

Parts that are smaller than the others, except the last, are flagged as possibly cut-off downloads. With a SHA256SUMS file every part is checked, so the exact damaged part is named.

No. .z01, .z02 plus .zip is a spanned ZIP made by WinZip or 7-Zip, and .part1.rar or .r00 are RAR volumes made by WinRAR.

They are not plain slices, so they are opened as an archive instead of joined: spanned ZIPs work in the Archive Extractor, RAR volumes in WinRAR or 7-Zip with all parts in one folder.

Drop the SHA256SUMS.txt or .sha256 file together with the parts and the joined file is verified automatically.

No checksum file? Compare the SHA-256 with the one the sender gives you - the Check SHA-256 button opens the joined file in the Checksum Calculator.

Yes, and no. The parts are joined by reference inside your browser, so nothing is copied in memory and nothing is uploaded.

For very big results pick Into a folder in Chrome or Edge - the file is written straight to your disk. The disk you save to must not be FAT32, which cannot hold files of 4 GB or more.

On Windows open Command Prompt in the folder and run copy /b file.zip.001+file.zip.002+file.zip.003 file.zip. On Mac or Linux run cat file.zip.0* > file.zip in Terminal.

Parts made with our File Splitter also come with ready-made join.bat and join.sh scripts. Still having trouble? Please contact us and we'll be happy to help!

File Joiner - Join .001 Split Files Online

All back in one piece!