Archive Conversion
Convert ARJ to 7Z Online — Free
Fast, free ARJ to 7Z converter. No registration required.
転送時に暗号化ファイルは2時間後に自動削除登録不要
またはインポート元
安全な転送
HTTPS暗号化アップロード
プライバシー優先
処理後にファイルを自動削除
登録不要
すぐに変換を開始
どこでも動作
あらゆるブラウザ、あらゆるデバイス
変換方法
1
Upload your .arj file by dragging it into the upload area or clicking to browse.
2
Choose your output settings. The default settings work great for most files.
3
Click Convert and download your .7z file when it's ready.
ARJとは？
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.
形式の詳細
- 正式名称
- ARJ Archive
- 拡張子
- .arj
主な特徴
- DOS era
- Multi-volume
- BBS heritage
- Legacy archives
7Zとは？
7Z is a high-compression archive format from the 7-Zip project. It achieves significantly better compression ratios than ZIP using LZMA/LZMA2 algorithms.
形式の詳細
- 正式名称
- 7-Zip Archive
- 拡張子
- .7z
主な特徴
- High compression
- LZMA2 algorithm
- AES-256 encryption
- Open source
ARJと7Zの比較
| 特徴 | ARJ | 7Z |
|---|---|---|
| 正式名称 | ARJ Archive | 7-Zip Archive |
| 拡張子 | .arj | .7z |
| 最適な用途 | DOS era | High compression |
よくある質問
Yes. You can convert up to 5 files per day without signup, or 20 per day with a free account — no watermark required. Pro users get 100 conversions per day and larger file sizes.
Most files convert in under 30 seconds. Larger files may take 1-3 minutes. Processing runs on our servers, so your device stays fast.
Our converter uses optimized settings to preserve quality. Default settings prioritize quality over file size. You can adjust settings for more control.
Free users can convert files up to 100MB. Pro users can convert files up to 2GB with priority processing.
Yes. Our converter is browser-based and works on any device — iPhone, Android, tablet, or desktop. No app or software installation needed.