Comma-separated value is a simple yet powerful file format to store and exchange data. Values are separated using commas in this plain text file format. CSV files are often used to store data in a tabular format, such as spreadsheets or databases. A comprehensive guide on what is a CSV file , how to create it, how to open it, and how to import or export a CSV file . CSV files are often used when data needs to be compatible with many different programs. CSVs can be opened in text editors, spreadsheet programs like Excel, or other specialized applications. A Comma Separated Values (CSV) file is a plain text file that contains a list of data. Learn what (exactly) a CSV file is, how they’re used in different types of software applications, and how to edit, create and import them.