Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .docx

1 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .docx file?
  • Which program can create the .docx file?
  • Where can you find a description of the .docx format?
  • What can convert .docx files to a different format?
  • Which MIME-type is associated with the .docx extension?
Microsoft Word 2007 Document .docx file icon

Microsoft Word 2007 Document

The DOCX file is a Microsoft Office Word 2007 Document without macros. Office Open XML (commonly abbreviated as OOXML) is a new file format specification for the storage of electronic documents such as memos, reports, books, spreadsheets, charts, presentations and word processing documents.
Category: Document files
Program name: -
Mime-type: application/vnd.openxmlformats
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
Microsoft Word AutoRecovery File
ClarisWorks Document
Data Interchange Format
Microsoft Word Document
Microsoft Word Document Template
Lotus Word Pro Document
Microsoft Word for Macintosh Document
Portable Document Format Document
Microsoft PowerPoint Presentation

Other types of files may also use the .docx file extension. If you have helpful information about .docx extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

Multipage PCX Image
Redatam Binary Dictionary Data
WordStar 2000 Document
DragThing Color Settings
ThinkFree Online Note Document
Visual Basic ActiveX Document Binary Form
ActiveX Custom Control

The .docx filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

dox (1), docs (1), doc (1), dcx (1), ocx (1), docz (1), docc (1), dicx (1)

Can't open a .docx file?

If you want to open a .docx file on your computer, you just need to have the appropriate program installed. If the .docx association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.docx

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android