How to View a CSV File. One day you may click a file with a CSV extension and Windows might ask you how to open it. CSV files make it possible for diverse applications such as databases and ...

A CSV (comma-separated values) file is a simple text file in which information is separated by commas, and is common in spreadsheet apps.

What makes a CSV file unique is the way its content is organized. Here's what you need to know about CSV files and how to use them.