Sign up ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I'd like to convert a couple thousand zip files to 7z, with maximum compression and multithreading enabled.

Also in another place. Like c:\temp\ to f:\converted\file.7z

share|improve this question

2 Answers 2

Nevermind, does the job just fine!

Edit: But hell, it takes way too long....

share|improve this answer
And it also can't handle some zips that contain filenames in "bad" encodings like cp1251 or koi8r or something like that. – Sergey Jul 15 '13 at 10:09

I wrote a script in Python - You can run it with:


and it will create your_archive.7z near it.

Or you can install it on your system with make install (if you see the repo)

And just call:


It needs unzip and 7za programs.

You can modify it as you wish for your needs (and send me a pull request)

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.