Files with docx extension are documents written and saved using Microsoft Word word processor edition 2007 or later. DOCX format replaced the previously used DOC format, moving from binary files to Open XML schema-based documents. They are supported in almost every modern word-processing tools.

Detailed description

Software that open docx file

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DOCX file extension - Microsoft Word Open XML document

What is docx file? How to open docx files?

File type specification:

Document file type icon Document file type

Microsoft Office file type icon Microsoft Office file type

docx file icon: docx filetype icon

File extension docx is best known for its use in Microsoft Word, a powerful word processor and authoring software that allows users to create and share documents. It is available as part of Microsoft Office and Office 365 subscription-based services.

Replacing the previously used binary .doc files, .docx files were introduced in MS Word 2007 and feature an Open XML formatting schema for more excellent compatibility with ZIP compression resulting in smaller files.

Microsoft Word 2007, Microsoft Word 2010, Microsoft Word 2013, Microsoft Word 2016, and Microsoft Word 2021 still use the same docx document file format.

MIME types used for Word docx documents:

Updated: April 23, 2024

The default software associated to open docx file:

Microsoft Word icon

Microsoft Corporation logoMicrosoft Word  Microsoft Windows software

Company or developer:
Microsoft Corporation

Microsoft Word offers powerful word processing and text editor features that allow users to easily create documents. Almost every, if not every, computer user knows .doc and .docx Word documents.

Microsoft Office icon

Microsoft Corporation logoMicrosoft Office  Microsoft Windows software

Company or developer:
Microsoft Corporation

Microsoft Office is popular productivity suite for Microsoft Windows. Microsoft Office contains a set of applications and services used to work with documents (Microsoft Word), spreadsheets (Microsoft Excel), presentations (Microsoft PowerPoint), databases (Microsoft Access) etc..

Microsoft Office can be also used to manage e-mail accounts, tasks, calendars and contacts (Microsoft Outlook). 

Microsoft Word for Mac icon

Microsoft Corporation logoMicrosoft Word for Mac  Apple macOS / Mac OS X software

Company or developer:
Microsoft Corporation

Microsoft Word for Mac is the Macintosh version of the popular word processing application from Microsoft Office Suite. It offers powerful text editing features for both home and corporate users.

The latest version of this application, Microsoft Word, is integral part of Microsoft Office for Mac and cannot be bought as standalone.

Microsoft 365 icon

Microsoft Corporation logoMicrosoft 365  Multiplatform software

Company or developer:
Microsoft Corporation

Microsoft 365 is a subscription-based suite offering Office apps (Word, Excel, PowerPoint, Outlook), cloud services, and advanced security. It enhances productivity, supports real-time collaboration, and ensures data protection, catering to individual, business, and enterprise needs for a modern digital workspace.

Office 365 icon

Microsoft Corporation logoOffice 365  Multiplatform software

Company or developer:
Microsoft Corporation

Office 365 is a subscription-based service that gives users access to several services and apps from Microsoft Office. It is available some types of subscription editions (for Home, Education, Business and Enterprise users) available for Microsoft Windows and Apple macOS and all major mobile platforms.

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Help how to open:

Any text editor with the support of Microsoft Word docx format can open and edit .docx documents. Plenty of free open-source or commercial office suites and word processors are available for all major platforms.

How to convert:

Microsoft Word supports other document formats, so users can convert .docx documents to different formats using the File|Save as... menu option.

Some Third party word processors and converters also support formats from MS Word and can achieve docx conversion in the same manner.

Find conversions from docx file:

docx to cdr

docx to csv

docx to eps

docx to pages

docx to pub

docx to tns

docx to vcf

Find converter to docx file type:

asd to docx

eddx to docx

gdoc to docx

mp3 to docx

oxps to docx

pages to docx

pmd to docx

File identification strings:

HEX code: 50 4B 03 04
ASCII code: PK

List of software applications associated to the .docx file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open docx file, edit docx file, convert docx file, view docx file, play docx file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting docx files.

Software that open docx file - Microsoft Word Open XML document

Programs supporting the exension docx on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open docx file action.

Microsoft Windows:

Main software associated with docx file by default:
Microsoft Word small icon Microsoft Word
Other suggested software:
AbiWord small icon AbiWord
Corel WordPerfect small icon Corel WordPerfect
Kingsoft Office small icon Kingsoft Office
Ability Write small icon Ability Write

Apple macOS / Mac OS X:

Main software associated with docx file by default:
Microsoft Word for Mac small icon Microsoft Word for Mac
Other suggested software:
AbiWord for Mac small icon AbiWord for Mac
Pages for Mac small icon Pages for Mac
NeoOffice small icon NeoOffice



Main software associated with docx file by default:
Microsoft 365 small icon Microsoft 365
Other suggested software:
Apache OpenOffice Writer ( Writer) small icon Apache OpenOffice Writer ( Writer)
LibreOffice Writer small icon LibreOffice Writer

On-line services:

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