This article details how to export data from a spreadsheet like Excel, Google Sheets, and Apple Numbers (including examples from all three sources).
Exporting from Excel
If you’re using Excel for Mac, start by clicking the File menu option and selecting Save As. Make sure that the .csv file type is selected, then click the Save button.
On a Windows device, follow the same steps using the File menu tab.
Exporting from Google Sheets
To export a Google Sheet start by clicking the File menu option and selecting Download. Then select the Comma-separated-values (.csv, current sheet) option.
Exporting from Apple Numbers
To export a Google Sheet start by clicking the File menu option and selecting Export To. Select the CSV option, click Next, and then Export.