How to convert ARJ to 7Z
- Add your .ARJ file - drop it in the box above or click to browse.
- Convert it to .7Z in a few seconds.
- Download your new .7Z file.
What to expect
- No single-pass conversion exists - every tool extracts the
.arjfirst and rebuilds a new.7z, so the process always takes two steps. - The resulting
.7zis typically smaller than the source.arjbecause LZMA2 compresses more efficiently than ARJ's LZ77/Huffman algorithm. - Password-protected ARJ archives using the legacy "garble" feature cannot be extracted by 7-Zip - use the original
arj32tool to unlock them first.
Frequently asked questions
Can I convert ARJ to 7Z without unpacking the files?
No - all tools extract the archive first, then recompress into 7Z. A direct container-to-container conversion does not exist.
Will the 7Z file be smaller than the ARJ?
Usually yes - LZMA2 compression in 7Z typically outperforms ARJ's algorithm, though the exact saving depends on file content.
Does 7-Zip handle multi-volume ARJ sets?
Yes - keep all parts (
.arj, .a01, .a02, ...) in the same folder and open only the first file; 7-Zip reads the rest automatically.Is 7Z a good format for long-term archiving?
7Z has an open specification and broad tool support on all major platforms; it is a solid choice, though ZIP has wider built-in OS support if compatibility matters most.
