The CSV file extension appears on text documents that contain comma-separated values. Like spreadsheet data, each line in a CSV file separates into individual values that correspond with the cells ...

Learn how to merge multiple CSV files into one Excel sheet. You can combine or join more than one CSV file into one Excel Worksheet.

Microsoft Excel has an import wizard, but if you structure the text correctly, you can bypass the wizard altogether.

And while you can import CSV files into Excel and work with them there, it can get confusing—you have to keep track of which Excel features work in CSV files, and which do not.

Twitter used to provide CSV exports of your data, now it's all in machine-readable JSON. How can you use it in Excel?