.XLSX File Extension

File Type:
Microsoft Excel Open XML Spreadsheet

Having trouble opening .xlsx extension? Don't panic! This page explains what xlsx files are as well as suggests programs you may use to open xlsx files. You can download these programs through this page.

What is a XLSX file?

Xlsx file extension has Microsoft Excel Open XML Spreadsheet file type, developed by Microsoft, which is associated with the "spreadsheet files" category.

Associated with Microsoft Excel, the file contains data, using worksheets. It allows storing financial information as well as creating various types of mathematical models. Users may format each cell in an XLSX spreadsheet. The cells can also reference other cells in order to compute the final value.

To learn how you can open the given file, read the information below.

xlsx file icon
File Type:
Microsoft Excel Open XML Spreadsheet
Spreadsheet Files

How to open XLSX file?

Double click the xlsx file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .xlsx extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the xlsx extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the xlsx file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open XLSX files

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the xlsx file as well. Download Universal File Viewer for your OS.

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