What is a CSV file?
CSV files are comma-separated values files, which allow you to save data in table-structured format and are useful for managing large databases.
You can create CSV files with Microsoft Excel, OpenOffice Calc, and Google Sheets.
How to create a CSV file
Open a new spreadsheet
Type each of your headers, or field names, into the cells located in row 1 at the top of the spreadsheet.
Enter your data into the spreadsheet under each column as needed.
Click on "File" and select "Save As" after you’ve entered all your data into the spreadsheet.
(If you’re using Google Sheets, this option will read as "File” > “Download as”.)
Select "CSV" under the "Save as type" dropdown menu.
Select "Save." You have now created a CSV file and commas will automatically be added to separate each field.