GZI and TGZ are both variants of GZIP compressed archives, so if you need to convert one to another (if its even useful) can be done using Gzip software. However, renaming gzi to tgz may be sufficient for the job.
Convert GZip compressed archive to Gzip compressed TAR archive.
We have found one software suitable in our database for this conversion.
Linux/Unix software - convert gzi to tgz on Linux
Gzip is compression utility popular on Unix and Unix-like operating systems. gzip is short for GNU zip.
Convert from gzi file
to tgz file
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.