Microsoft Word is the standard program for .docx files, but you have other options

.docx is the file format that Microsoft Word uses to save documents. When you double-click a .docx file on your computer, it will open in whatever program you have set as the default — usually Word if you own it, or a free alternative if you don't. You don't need to buy anything to open and read a .docx file; several free programs can do it.

The choice between programs depends on what you need to do with the file. If you only need to read it, a free viewer works fine. If you need to edit it, create new documents, or share files with people who use Word, a full word processor is more useful. Some programs are better at preserving the exact formatting of a document, while others prioritize simplicity.

Key Takeaways

  • Microsoft Word (paid) opens .docx files with perfect formatting, but free alternatives work for most everyday tasks.
  • Google Docs (free, online) lets you open and edit .docx files without installing anything, and works on any device with a web browser.
  • LibreOffice Writer (free, installed on your computer) is a full word processor that handles .docx files and works offline.
  • Microsoft Word Online (free) is a lighter version of Word that works in your web browser if you have a Microsoft account.
  • Some formatting — especially complex layouts, tracked changes, or embedded objects — may look slightly different in free programs than in paid Word.

Microsoft Word: The original and most compatible option

Microsoft Word is the program that created the .docx format, so it handles these files perfectly. If you buy a Microsoft 365 subscription (which includes Word), you get the full version with every feature. A single-purchase license for Word also exists, though it costs more upfront and doesn't include updates.

Word is installed on your computer and works offline. It's the safest choice if you work with complex documents, use tracked changes to show edits, or need to share files with people in corporate environments where Word is standard. The downside is cost — Microsoft 365 runs about $70 per year for a single person, or $100 per year for a household plan that covers up to six people.

Google Docs: Free and works in your web browser

Google Docs is a free online word processor that opens .docx files directly. You don't install anything; you just go to Google Drive, upload the file or open it from an email, and edit it in your browser. Google Docs works on any device — Windows, Mac, Chromebook, tablet — as long as you have internet access and a Google account (which is also free).

Google Docs preserves most formatting from Word documents, though very complex layouts sometimes shift slightly. The real advantage is collaboration: you can share a document with other people, and you all see changes in real time. If you work with others or want to access your documents from multiple devices, Google Docs is hard to beat. The main limitation is that you need an internet connection to work on files, though Google Docs does have an offline mode if you set it up in advance.

LibreOffice Writer: Free, installed on your computer

LibreOffice Writer is a free word processor that you download and install on your Windows, Mac, or Linux computer. It opens .docx files and works offline, so you don't need internet to use it. LibreOffice is maintained by a nonprofit organization and has been around for decades, so it's stable and widely used.

LibreOffice handles most .docx files well, though some advanced Word features (like certain types of tracked changes or complex embedded objects) may not display exactly as they would in Word. For everyday documents — letters, reports, resumes — LibreOffice works reliably. It's a good choice if you want a full word processor on your computer without paying for it, and you don't need perfect compatibility with every Word feature.

Microsoft Word Online: Free if you have a Microsoft account

Microsoft Word Online is a lighter version of Word that runs in your web browser. If you have a free Microsoft account (Outlook.com email, OneDrive storage, or a work/school account), you can open .docx files in Word Online without paying anything. You access it through Office.com or by uploading a file to OneDrive.

Word Online handles most everyday editing tasks and preserves formatting better than Google Docs because it's built by Microsoft. The tradeoff is that it has fewer features than the full version of Word — some advanced formatting options and macros don't work. Like Google Docs, it requires an internet connection. If you already use Microsoft services, Word Online is a natural choice because your files sync automatically with OneDrive.

Other programs that open .docx files

Apple Pages (on Mac and iPad) opens .docx files, though it's designed primarily for Apple's own format. WPS Office is a paid program that works on Windows, Mac, and mobile devices and handles .docx files well. OpenOffice is another free option similar to LibreOffice. On mobile phones, Microsoft Word has free apps for iPhone and Android that let you open and edit .docx files, though some advanced features require a paid subscription.

For most people, one of the four main options above covers what you need. The less common programs are useful only if you have a specific reason — for example, if you use a Mac and prefer Apple's design, Pages might appeal to you, but it's not necessary.

How to choose which program to use

Start by asking what you actually do with .docx files. If you only read them and never edit, any free viewer works. If you edit documents alone and don't need perfect Word compatibility, Google Docs or LibreOffice are solid free choices. If you collaborate with others, Google Docs has the best built-in sharing. If you work in a corporate environment or need advanced Word features, the paid version of Word is worth the cost.

You can also use different programs for different files. You might open simple documents in Google Docs and save complex ones in Word. There's no rule that says you have to pick one program and stick with it. Try a free option first — Google Docs or LibreOffice — and only pay for Word if you find you actually need it.

Frequently Asked Questions

Can I open a .docx file without installing anything?

Yes. Google Docs and Word Online both work in your web browser without installation. You upload the file or open it from an email, and you can read and edit it immediately. Both require an internet connection and a free account.

Will my document look the same in a free program as it does in Word?

Usually, yes, for everyday documents. Simple formatting like bold, italics, fonts, and spacing transfers fine. Complex layouts, advanced tracked changes, or embedded objects may look slightly different. Test with a file that matters to you before committing to a program.

What if someone sends me a .docx file and I don't have Word?

Open it in Google Docs (free, online), LibreOffice Writer (free, on your computer), or Word Online (free, if you have a Microsoft account). All three handle .docx files. You can also ask the person to send you a PDF or .txt version if you only need to read it.

Do I need to convert .docx files to use them in other programs?

No. LibreOffice, Google Docs, and Word Online all open .docx files directly without conversion. You can save your edits back to .docx format so the file stays compatible with Word.

Is it safe to open .docx files from strangers?

.docx files can contain macros (small programs) that run when you open them, though this is rare in everyday documents. If you don't recognize the sender or the file seems suspicious, open it in Google Docs or Word Online first — they run the file in a sandbox and are safer than opening it directly on your computer. Never enable macros unless you trust the source.