How to Open Multiple CSV Files in One Excel Spreadsheet. The CSV file extension appears on text documents that contain comma-separated values. Like spreadsheet data, each line in a CSV file ...

CSVFileView is a free portable tool that lets you open CSV files and manage data without using Excel or Google Sheets on Windows 11/10.

You can convert JSON files to Microsoft Excel CSV file formats using this hidden built-in feature. We show you how to do it.

How to import Microsoft Excel spreadsheets into Apple Numbers This procedure works with .xlsx and .xls file formats. You can also import .csv and tab-delimited files.