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.

How to Open Multiple CSV Files in One Excel Spreadsheet. The CSV file extension appears on text documents that contain comma-separated values. Like spreadsheet data, each line in a CSV file ...

The routine then appends the contents of the "runningprocesses2.csv" file to the new Excel file. Close the Windows PowerShell editor window, and then open Microsoft Excel.