How To Open XLSX files

OPEN YOUR
XLSX FILE FOR FREE:

Clicking the Download button starts Optimum Installer™,. Learn more

Compatible with
XP, Vista and 7

It is easy to open a XLSX file with Free File Opener. Just follow these steps:

  • STEP 1
    Download Free File Opener
  • STEP 2
    Click the Open button
  • STEP 3
    Select your file and click OK

That's it, you have opened your XLSX file with Free File Opener!

What is a xlsx file?

XLSX files contain spreadsheets created with Microsoft Excel. XLSX files store data in worksheets comprised of cells arranged in grids of rows and columns. The cells may be formatted individually for custom color, border, style, font and size. XLSX files may also include charts, mathematical functions, styles and formatting. Cells may reference other cells to compute a value. For these reasons, XLSX files are frequently used to store financial data, and to create mathematical models.

XLSX files are created using the Open XML file standard introduced in Microsoft Office 2007, and compressed using ZIP compression to reduce file size. The ZIP archive contains the file [content types].xml, which describes the spreadsheet as a whole, and an XML file for each individual worksheet.  Versions of Microsoft Excel before 2010 used the XLS file format.

Open xlsx files with Free File Opener

If you have received a file with a xlsx file extension and need to open or view the file, Free File Opener can help. With Free File Opener, you have a free file viewer that allows you to open all document files quickly and easily. You can also open and view over 200 other types of files including spreadsheets, pictures, movies and music files. The best part about Free File Opener is that it is a Free download!