You can create a CSV file with programs that include Excel, Google Sheets and OpenOffice Calc, as well as simple word processing programs like Notepad. Creating CSV File With Excel ...

To build a CSV file to open in Microsoft Excel, you'll need to decide how many columns you'll use in Microsoft Excel for the categories of information you're preparing in Notepad.

Opening CSV files using spreadsheet software is a straightforward process. In Excel, click "File," choose "Open," and locate your CSV file. That's all there is to it.