Try PowerArchiver

https://filehippo.com/download_powerarchiver/

Its shareware, but free trial. Might be enough to do what you want

I used it years ago and it did exactly what I needed to convert archives. Just installed this version and it will easily convert ZIP to LHA and also as a batch queue

Do the SWOS update guys provide an LHA archive with a Whdload slave?

All links related to the project are Ok now as the offending files have been removed :)

@nemo93 said in [Amiga] Amiberry + WHDLoad = Holy Grail - Amiberry's official thread:

I'd be great if you could add that version to Retropie! Thanks a lot.

It's added now, thanks for the heads up.