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.

A CSV (comma-separated values) file is a text file in which information is separated by commas. CSV files are most commonly encountered in spreadsheets and databases. You can use a CSV file to ...

If the DAT file you're trying to open is text, you can convert the file into text in the Microsoft Excel program by first saving it as a CSV file.

A better tool for editing CSV files ModernCSV, an indie app for Linux, Mac, and Windows computers, is the best tool I've come across for this purpose. If you work with CSV files frequently, or ...