How to convert between Zip, 7Zip, and GZ files?
Do you have a GZ file that should be converted to Zip or 7Z file format? ArcConvert is a handy utility to convert archive files between different archive formats. It supports conversion among formats like: Zip, 7Zip, GZ, Bzip2 and Xz. It has simple and easy to use interface for quick file format conversion.

Use ArcConvert to convert Archive file format
-
Download ArcConvert, unzip it (will need 7Zip utility to unzip).
-
Double click to launch the converter, no install required.
-
Click Open button to select archive file on the computer.

- Select output archive format form drop down box.

- Then click on Convert button to get archive file in required format.

This utility can be very useful in converting GZ files to 7Zip files or Zip files.