G16 is a rare file format associated with a piece of geophysical equipment called GRS-16. The device is used for detecting radiation and a G16 file most likely contains a findings report or other type of info related to the equipment's features. As G16 files are uncommon, opening them with regular image viewers will probably be difficult.
The quick and simple way to handle your files is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch conversions. As you will soon realize, reaConverter will help you avoid spending countless hours trying to figure out how to convert multiple G16 files as once.
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