How to Open Multiple CSV Files in One Excel Spreadsheet. The CSV file extension appears on text documents that contain comma-separated values.

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

An option in Excel allows users to import all the texts into the spreadsheet (convert text file into Excel ) so that users can do the job quickly.

Microsoft Excel Won't Show Japanese Characters. Japanese characters often become garbled when you work with CSV or text files in Microsoft Excel.