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.CSV File Extension

File TypeComma-Separated Values File

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CategoryData Files

What is a CSV file?

A CSV file is a comma-separated values file commonly used by spreadsheet programs such as Microsoft Excel or OpenOffice Calc. It contains plain text data sets separated by commas, with each new line in the CSV file representing a new database row and each database row consisting of one or more fields separated by a comma.

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Screenshot of a .csv file in Microsoft Excel 365
CSV file open in Microsoft Excel 365

The CSV data exchange format is supported by many personal, business, and scientific programs. The format is especially useful in transferring tabular data between programs and databases because of its wide support.

The file is also helpful for transferring data saved in a proprietary format, such as an .XLSX file, into another program that does not support the XLSX format. For example, you can export financial data in an XLSX file opened in Microsoft Excel to a CSV file to upload it to an online financial management service. Or, you can export thousands of contacts from an email service to a CSV file then import the file into an address organizer or another email service.

How do I open a CSV file?

You can open CSV files with a large number of applications, including Microsoft Excel (multiplatform), OpenOffice Calc (multiplatform), and Corel Quattro Pro (Windows). You can upload CSV files to Google Sheets and view, edit, save, and convert the files. And you can open CSV files with various mobile apps, including Microsoft Excel and Google Sheets, which are both available for Android and iOS.

Since CSV files are saved as plain text you can open them with a plain text editor, such as Microsoft Notepad (Windows) and Apple TextEdit (macOS).

Open and view .CSV files with File Viewer Plus.

Programs that open CSV files

Updated 3/18/2021

About CSV Files

Our goal is to help you understand what a file with a *.csv suffix is and how to open it.

The Comma-Separated Values file type, file format description, and Mac, Windows, Linux, Android, and iOS programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.

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