You can create a "CSV" (Comma Separated Value) file from most spreadsheet and database software, and even Word Processing software. 

To do this in Microsoft Excel (the most common spreadsheet software):

• Click File in the menu bar, and select Save As option.
• In the resulting window, select "CSV (comma delimited)" as desired 'File Type'.
• Click 'Save' button to save the CSV file to your computer.

In other spreadsheet or database software, please follow similar steps to create the CSV file.

To convert a table in Microsoft Word into a CSV file - first cut/paste the table into Microsoft Excel. Then follow the steps above to create a CSV file.

For further details and a sample template - please check out this article.