At Hostinger, .rar format of archives is not supported. Thus, you can upload it, but you won't be able to unpack it.
Our File Managers support the following archive formats:
Classic File Manager: zip, tar, tar.gz, tgz
File Manager beta: zip, tar, tar.gz, tar.bz2, tar.xz, tar.lz4, tar.sz
If you upload an archive in one of formats, mentioned above, you will have no troubles extracting them 😊
NOTE: