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.

First, create a blank spreadsheet in Microsoft Excel and ensure you have the .txt file on your PC. Then, switch from the Home tab to the Data tab. You can find an option called From Text/CSV here.