Convert Z03 to R13

Understanding z03 and r13 file formats

Z03 files are part of a split archive created by WinZip or compatible archiving tools. When a large file is compressed and split into multiple parts, the extensions typically start with .zip, followed by .z01, .z02, .z03, and so on. These files cannot be opened individually; they must be combined with all parts of the split archive to extract the original content.

R13 files are also split archive files, but they are associated with WinRAR. When WinRAR splits a large archive, it creates a sequence of files with extensions like .rar, .r00, .r01, ..., .r13, etc. Like z03 files, r13 files are not standalone archives and require all parts of the split archive for extraction.

Is direct z03 to r13 conversion possible?

There is no direct conversion between z03 and r13 files because they are both parts of different split archive formats. Instead, you need to extract the complete archive from the z03 set (along with all related parts), then re-compress the extracted data into a new split archive using the RAR format, which will generate r13 files if the archive is large enough.

How to convert z03 to r13

1. Gather all parts of the split ZIP archive (.zip, .z01, .z02, .z03, etc.).
2. Extract the archive using WinZip, 7-Zip, or a similar tool. Open the .zip file and extract the contents; the software will automatically use the .z03 and other parts as needed.
3. Re-compress the extracted files using WinRAR:
• Open WinRAR and select the extracted files.
• Click Add to archive.
• Choose RAR as the archive format.
• Set the Split to volumes, size option (e.g., 100MB) to create multi-part archives.
• Click OK to create the split RAR archive. If the archive is large enough, WinRAR will generate .r00, .r01, ..., .r13 files.

Best software for the conversion

• 7-Zip (free, open-source) – for extracting split ZIP archives.
• WinRAR (commercial, trial available) – for creating split RAR archives.

Summary

While you cannot directly convert a z03 file to an r13 file, you can extract the contents of a split ZIP archive and re-compress them into a split RAR archive using the recommended software above.