Conversion of bak files to csv file format

In some cases .bak files are actually just renamed .csv files, which is usually just the simplest way how to produce a backup of some file. You can try to open your .bak file using a text editor and check out if the data inside are structured in comma separated value format. If that's the case you can simply rename the suffix back from bak to csv.

Otherwise you will have to recover the backup using the original software and check out whenever some way to further export the files to CSV exists.

Open BAK file    Open CSV file