Convert 7Z.021 to 002

Understanding 7z.021 and 002 file formats

7z.021 is a part of a split archive created by the 7-Zip compression tool. When a large file or folder is compressed and split into multiple parts, each segment is given a sequential extension such as .7z.001, .7z.002, ..., .7z.021. These files are not standalone archives; they are fragments of a single compressed archive and must be joined together for extraction.

002 files are also split archive parts, commonly used by various archiving tools like 7-Zip, WinRAR, or HJSplit. The .002 extension typically represents the second part of a split archive, with .001 being the first. Like .7z.021, a .002 file cannot be used independently and requires the complete set of split files for extraction.

Can you convert 7z.021 to 002?

Direct conversion from 7z.021 to 002 is not practical or meaningful, as both are split archive parts but from potentially different splitting schemes or tools. Instead, the correct approach is to recombine the entire set of .7z.001, .7z.002, ..., .7z.021 files using 7-Zip, extract the original content, and then, if needed, re-split the extracted file into .001, .002, etc., using your preferred tool.

How to extract and re-split your archive

1. Ensure you have all parts of the .7z split archive (from .7z.001 to .7z.021) in the same folder.
2. Install 7-Zip (available at 7-zip.org).
3. Right-click on the .7z.001 file and select 7-Zip → Extract Here to extract the complete archive.
4. After extraction, if you need to split the resulting file into .001, .002, etc., use 7-Zip or HJSplit:
• With 7-Zip: Right-click the file, choose 7-Zip → Add to archive..., set Split to volumes, bytes to your desired size (e.g., 100M for 100 MB), and click OK.
• With HJSplit: Open HJSplit, select Split, choose your file and split size, and start the process.

Recommended software for handling split archives

• 7-Zip – Best for extracting and creating split archives in .7z and .001/.002 formats.
• HJSplit – Simple tool for splitting and joining files into .001, .002, etc.
• WinRAR – Can also handle split archives, but 7-Zip is recommended for .7z files.

Summary

There is no direct conversion between 7z.021 and 002 files, as both are parts of split archives. To access your data, extract the full .7z split archive with 7-Zip, then re-split the extracted file if you need .001, .002, etc. Use 7-Zip or HJSplit for the best results.