File Extension Library

.XLSX File Extension

  • Developer by: Microsoft
  • Category: Spreadsheet Files
  • Format: Zip

What is an .XLSX file?

.XLSX file extension is created by Microsoft. .XLSX has been classified as Spreadsheet Files. The format of .XLSX file is Zip.

.XLSX is Microsoft Excel Open XML Spreadsheet

An XLSX file is an Excel spreadsheet created by Microsoft Excel or another spreadsheet program, such as OpenOffice Calc or Apple Numbers. It stores data in worksheets, which contain cells arranged in a grid of rows and columns, and may also contain charts, mathematical functions, styles, and formatting. XLSX files are commonly used to store financial data and to create simple or complex mathematical models.

XLSX file open in Microsoft Excel 2016

XLSX files are created using the Open XML standard, which was introduced in Microsoft Office 2007. They are stored as a compressed Zip archive, which contains a collection of individual files. The archive includes the file [Content_Types].xml, which describes the spreadsheet, and an XML file for each worksheet within the spreadsheet.

Each cell in an XLSX spreadsheet may be formatted individually. For example, cells may have a number, text, currency, or other format as well as color, border style, custom font, and size. Cells may reference other cells to compute a resulting value.

NOTE: XLSX files can be opened in Excel 2007 or later. They are also backwards compatible with earlier versions of Excel via Open XML component support.

Common XLSX Filenames

Workbook1.xlsx - The default filename Microsoft Excel gives to new workbooks beginning with Excel 2007.

List of all softwares that can open the Microsoft Excel Open XML Spreadsheet
File Viewer Plus
Microsoft Excel 2016
OxygenOffice Professional
Corel WordPerfect X9
Apache OpenOffice
SoftMaker Office
Microsoft Excel 2016
Apple Numbers
Apache OpenOffice
Planamesa NeoOffice
OxygenOffice Professional
Apache OpenOffice
Microsoft Excel
Apple Numbers
MobiSystems OfficeSuite Pro
Infraware Polaris Office
Google Drive
Microsoft Excel
Kingsoft WPS Office for Android
MobiSystems OfficeSuite Pro
Google Drive
SoftMaker Office: PlanMaker Mobile
Google Drive
Intuit QuickBooks Canada

How to Open .XLSX file on different platforms

Open .XLSX File on Windows

  • Right-click a .XLSX
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .XLSX file and Select check box "Always use this app to open .XLSX files" Press "Ok"

Open .XLSX File on Mac

  • Right-click (or Ctrl + Left-click) the .XLSX file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .XLSX File on Linux

Right click on the .XLSX file, choose "Open with" and select a program from the list above

Open .XLSX File on iPhone

Select a file. If you don't see an application to open the .XLSX file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .XLSX File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .XLSX files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .XLSX files

  1. You need to update the application that you normally use to open .XLSX files. Only the latest version of the software supports the current .XLSX file format
  2. You need to check the .XLSX file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)