How do I open a ZIP file?

The .xlsx is an Excel file made from the latest version of Office on a PC. The XML file type is primarily associated with 'Extensible Markup Language'. A document creation language developed to replace HTML and provide more structure to documents. XML both works to specify document structure and, like HTML before it, markup. A great many programs use XML files both with and without XML extensions. These are all text files and so should be able to be viewed in any text editor.

Usually a ZIP file has a .zip extension. I don't understand why you say it has a .xlsx extension.

 Cheers, Tom 😉

Hi swpolski, and a warm welcome to the forums! 🙂

The XLSX file type is primarily associated with 'Excel' by Microsoft Corporation.

This is the new format for Microsoft Office documents.

It is a combination of XML architecture and ZIP compression for size reduction.

Microsoft promises the format will be open (published for anyone to use) and prior versions of Office, using components provided by Microsoft for Office 2000, XP, and 2003 will be available to perform document conversion. Remember that these are promises by Microsoft. We have yet to see the actuals. This format is not the same as the OpenDocument standard, also an XML-based standard being developed as a true open standard (see the OpenDocument Fellowship for more information).

http://filext.com/file-extension/XLSX

Do you have MS Office or Excel?

Might look into NeoOffice...

http://www.neooffice.org/

Then if you do have MS APPs, they have a file you can download so older versions can read the new format.

How to Open XLSX files on Windows, Mac and Linux Operating Systems?

http://www.downloadatoz.com/howto/open-xlsx-files-on-different-os.html

Free online conversion...

http://zamzar.com/

Hi.

Which is the file extension. .zip or .xlsx?

If it's a .xlsx file (Office 2007/mac2008 file format) then you'll need the Office XML File Format Converter for Mac.

Good Luck.