Convert A13 to 7Z

Understanding a13 and 7z file formats

A13 files are typically part of a multi-volume archive created by the ARJ compression utility. These files are not standalone archives but segments (e.g., .a00, .a01, ..., .a13) of a larger compressed set. To access the contents, you need all parts of the archive and the ARJ software or a compatible extraction tool.

7z files are compressed archive files created by the 7-Zip utility. The 7z format is known for its high compression ratio and support for strong AES-256 encryption, making it a popular choice for efficient and secure file storage and sharing.

How to convert a13 to 7z

Since an .a13 file is only a segment of a split ARJ archive, you must first reconstruct and extract the complete archive. After extraction, you can recompress the contents into a 7z archive. Direct conversion from .a13 to .7z is not possible without first extracting the original files.

Step-by-step conversion process

1. Ensure you have all parts of the ARJ archive (e.g., .arj, .a00, .a01, ..., .a13).
2. Use a tool like 7-Zip or WinRAR to extract the complete archive:
   Right-click the .arj file → 7-Zip → Extract Here (or similar option in your software).
3. After extraction, select the extracted files or folder.
4. To create a 7z archive, use 7-Zip:
   Right-click the files/folder → 7-Zip → Add to archive...
5. In the dialog, set Archive format to 7z and configure any desired compression options.
6. Click OK to create your new .7z file.

Recommended software for conversion

• 7-Zip (Windows, free): Handles both ARJ extraction and 7z creation.
• WinRAR (Windows, paid/trial): Supports ARJ and 7z formats.
• PeaZip (Windows/Linux, free): Another versatile archiver supporting both formats.

Summary

To convert an a13 (ARJ split archive part) to 7z, you must first extract the full archive using all parts, then recompress the extracted files into a 7z archive using a tool like 7-Zip.