XLSXfile extension

Microsoft Excel Spreadsheet

Have trouble opening the .xlsx extension? Don't panic! This page explains xlsx files and suggests programs you may use to open xlsx files. You can download these programs through this page!


What is XLSX file?

An XLSX file is an Excel spreadsheet from Microsoft Excel or another program to work with spreadsheets like OpenOffice Calc and Apple Numbers.

The application stores information on worksheets containing cells that are arranged in a grid of rows and columns. More such data includes charts, mathematical functions, styles, and formatting. Very often, XLSX files are used to store financial data and save simple with complex mathematical models.

Additional data

Microsoft introduced the Excel Open XML Spreadsheet (XLSX) in 2007. Since then, XLSX files have been the most common file for saving information in spreadsheets.

Since 2007, XLSX files have been replaced by .XLS files as a standard file. XLSX files are protected in Open XML format, storing the information in a compressed Zip package. There is a [Content_Types].xml file in the archive that provides an inventory of the spreadsheet and an .XML file for each worksheet in the spreadsheet.


How to open XLSX file?

Here are some universal methods of opening a file. Please, use this list of solutions.

Method 1: Correctly fix file association error

By following these steps, the user will be able to fix the xlsx extension association problem in an instant automatically:

Step 1: Click the "Download Solution" button to download the automatic tool from Appsitory.

Step 2: Now click "Start Scan" to find out all potential problems.

Step 3: Review the resulting scan and click the "Fix Items" option.

Method 2: Download apps that open the xlsx file

Here is a list of the presented programs that you should use to open/convert the xlsx file. You can choose the right program for your OS and click on it to start the download. You can also visit the developer's website.

Apps that open XLSX files

Method 3: Use Universal File Viewer

The recommended use of Universal File Viewer, a tool for opening over 250 file extensions, complements the list of programs above. This utility is capable of opening your xlsx file. Download Universal File Viewer to your OS quickly and securely.