How to convert TAR to 7Z
- Add your .TAR file - drop it in the box above or click to browse.
- Convert it to .7Z in a few seconds.
- Download your new .7Z file.
What to expect
- Unix file ownership (uid/gid) is not stored in
.7z- if the archive will be restored on a Linux server where permissions matter, keep the original.taror use.tar.xzinstead. - Already-compressed files (JPEG, MP4, ZIP) inside the TAR will barely shrink - expect the biggest gains with text, source code, and logs.
- Creating large
.7zarchives with LZMA2 is slower than gzip; if speed matters more than file size, consider.tar.gzinstead.
Frequently asked questions
Does converting TAR to 7Z always require two steps?
Yes - TAR has no compression of its own, so tools must extract the files first and then recompress them into a
.7z container. No tool offers a true single-step direct transcode.Will the .7z file be smaller than the original .tar?
Usually yes: LZMA2 in 7Z typically reduces size by 20-70% for text-based content, but already-compressed files like images or video will show little or no reduction.
Are file permissions preserved when converting TAR to 7Z?
Basic read/write/execute permissions are kept on Linux when using 7-Zip, but Unix ownership (user and group names) is not stored in 7Z and will be lost.
Can I convert .tar.gz directly to .7z without extracting to disk?
Yes - with 7-Zip you can pipe:
7z x file.tar.gz -so | 7z a -si output.7z, which avoids writing a temporary .tar file to disk.
