A CSV is a comma separated values file which allows data to be saved in a table structured format. CSVs look like a garden-variety spreadsheet but with a .csv extension. Traditionally they take the form of a text file containing information separated by commas, hence the name.
CSV files can be used with any spreadsheet program, such as Microsoft Excel, Open Office Calc, or Google Spreadsheets.
Saving Your Spreadsheet as a CSV
1. Open your file in your spreadsheet program.
2. Click on File and choose Save As.
3. Under Save as type, choose CSV (Comma delimited). Click Save.
4. You may see a message that your file “may contain features that are not compatible with CSV“. This message is to inform you that any formatting you may have (such as colors or bold text) and any formulas will not be preserved in the CSV formatted file. Click Yes to continue.
Thus, you can use your spreadsheet as CSV file.