If you need to convert that file from CSV to JSON, you can do that with the csvjson command like so: csvjson clients.csv > clients.json Csvkit has a couple of other handy tricks up its sleeve.

If you want to convert Google Earth KML files to Excel (XLS, XLSX) or CSV format, you can use these free converter software and online tools.

If you've encountered a CSV file and you're unsure what they're for, the good news is they're pretty straightforward and easy-to-use with apps you already know.