Convert ARJ to 7Z Online — Free
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Upload your .arj file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .7z file when it's ready.
What is ARJ?
ARJ (Archived by Robert Jung) is a DOS-era archive format popular on bulletin board systems in the early 1990s. It supported multi-volume archives across floppy disks. Legacy ARJ archives need extraction into a modern format like ZIP.
Format Details
- Full Name
- ARJ Archive
- Extension
- .arj
Key Features
- DOS era
- Multi-volume
- BBS heritage
- Legacy archives
What is 7Z?
7Z is a high-compression archive format from the 7-Zip project. It achieves significantly better compression ratios than ZIP using LZMA/LZMA2 algorithms.
Format Details
- Full Name
- 7-Zip Archive
- Extension
- .7z
Key Features
- High compression
- LZMA2 algorithm
- AES-256 encryption
- Open source
ARJ vs 7Z
| Feature | ARJ | 7Z |
|---|---|---|
| Full Name | ARJ Archive | 7-Zip Archive |
| Extension | .arj | .7z |
| Best For | DOS era | High compression |