Convert DOCX to ODT Online

CONVERT DOCX to ODT ONLINE

1) Upload DOCX file to convert

Drop files here, or Click to select

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Allowed file types: one, docx, doc, wbk, rtf, rvf, odt, abw, txt, dotx, docm, hwp, wpd, wps, tmd

2) Set converting DOCX to ODT options

3) Get converted file

DOWNLOAD CONVERTED FILE

Full version

Get Total Doc Converter to convert DOC, DOCX, TXT, RTF in batch.

Doc Converter To Convert Word and Doc files

Convert DOC Files in Batch!;
Convert DOCX to ODT and in many other formats
Convert hundreds of files in 3 clicks;
Have a desktop converter that works without Internet;
Keep your files safe, convert Doc files without sending them to the web;
Get a more poweful engine to process large files.

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Total Doc Converter

Total Doc Converter supports DocX (the format of Word 2007 documents). Installed this free Microsoft Office Compatibility Pack to convert DocX files to HTML, PDF, XLS, JPG, TIFF, TXT with Total Doc Converter.

Total Doc Converter converts Doc to PDF and allows you to add a digital signature to the final document.

Convert and combine several documents into one multi-page file (PDF, DOC, TIFF or a very long TXT file). All done in one go!

Total Doc Converter can convert Word 2010 to Word 2003 if you need a file compatible with older Microsoft Word.

Have an outdated Microsoft Office 2003? Update all your old files to the new format in one go. Convert Doc files to DocX with our Total Doc Converter.

Total Doc Converter allows setting your default font for text files.

Total Doc Converter can print out, fax to send to OneNote any file you select. It will also create detailed reports on your Doc files in PDF, XLS, CSV, TXT formats. It's the esiest way to learn how many files you have and their parameters.

Total Doc Converter has a clear, easy-to-follow interface. You won't get lost in settings!

The widest list of supported file types: convert Word, Doc, DocX, DocM, RTF, RVF, or TXT files to RTF, DOCX, XLS, JPEG, PNG, TIFF, HTML, XHTML, PDF, TXT in a batch mode. It's a powerful all-in-one doc converter!

Total Doc Converter supports several types of compression for TIFF. If you are at a loss the program will automatically choose the best value.

Every document is displayed in Preview panel. You can zoom it or view the document full-sized. Use preview option to quickly find a file.

Add your logo or any other image to the header or the footer of the output file.

Do you want more order? Total Doc Converter will add page counters or a date to every page of the output files. The app is great for stamping legal bates too!

Total Doc Converter can copy original time stamps if you want to keep them.

Total Doc Converter offers a lot of additional settings for Doc to PDF conversions. Set user permissions, password-protect your files or sign with a digital signature. Get PDF, PDF/A and non-searchable PDFs.

Total Doc Converter can be run via command line (get the ready-to-use command line from GUI).

How to convert DOCX to ODT?

💾 Upload Your File: Go to the site, click on «Upload File,» and select your DOCX file.

✍️ Set Conversion Options: Choose ODT as the output format and adjust any additional options if needed.

Convert and Download: Click 👉«Download Converted File»👈 to get your ODT file.

Cloud Based

There is no need to install any software to convert DOCX to ODT with CoolUtils. Simply access the internet, and you can easily convert your file online with our service.

Secure

Our hardware operates in top-tier, highly secure data centers equipped with advanced electronic surveillance and multi-factor access control systems.

Ease of Use

Converting DOCX Word documents to ODT OpenDocument files online has never been so simple. Drop your .docx file and the converter produces a standards-compliant .odt — editable in LibreOffice, OpenOffice, and every OpenDocument-aware editor.

Privacy

We understand the importance of privacy, which is why we've developed a comprehensive privacy policy detailing how we handle your files and personal information. You can read the policy here.

DOCX File

File extension	.DOCX
Category	Document File
Description	DOCX is an MS Office text format of new generation (starting from 2007 versions). It is a more open, more standardized version that allows various apps get easier access to data stored in Word files. DOCX files are lighter in size than DOC analogues due to a new, XML-based file structure. As opposite to DOC, a corrupted DOCX file still can be opened, and undamaged data still can be read and edited. Older Word versions can work with DOCX, if a free compatibility pack is installed and setup.
Associated programs	Microsoft Word 2007 Microsoft Word 2008 (MAC) OxygenOffice Professional (Linux) Word 2010
Developed by	Microsoft
MIME type	application/vnd.openxmlformats-officedocument.wordprocessingml.document
Useful links
Conversion type	DOCX to ODT

ODT File

File extension	.ODT
Category	Document File
Description	ODT format is a native format of Writer app from OpenOffice package. This is an open text standard for exchanging formatted office documents that may contain text, styling parameters, tables, charts, graphic data objects. It is a joint product of a few organizations, fully open for use, being a free and lighter alternative for DOC. ODT files can be edited by MS Word 2007 and later, while the original formatting of the document can be partly lost. ODT doesn’t support digital signature.
Associated programs	Microsoft Office 2007 Microsoft Office 2010 OpenOffice Writer
Developed by	Sun Microsystems
MIME type	application/vnd.oasis.opendocument.text
Useful links	More detailed information on ODT files

2026-01-14

We had to migrate our entire legal department from Microsoft Word to LibreOffice and this converter handled all 800 DOCX files without losing a single heading style or table. The EU open standards directive made ODT mandatory for us, and this tool made the switch painless.

Marek Novotný

2026-03-08

Converted a 200-page DOCX report to ODT for cross-platform sharing with our Linux team — formatting held up well, only a couple of embedded charts needed minor fixes after conversion. Fast and reliable for batch processing.

Claire Fontaine

2026-05-02

Our company standardized on OpenDocument formats for compliance reasons and this was the only tool that preserved complex DOCX table-of-contents and footnotes correctly in the ODT output. Saved us hours of manual cleanup.

Riku Mäkinen

Rating DOCX to ODT

4.7 (640 votes)Rate It

DOCX to ODT Converter — Frequently Asked Questions ▼

What is a DOCX file?

DOCX is the Office Open XML word-processing format introduced with Word 2007 and standardised as ISO/IEC 29500. A .docx is a ZIP archive of XML parts describing the document's text, styles, and images.

What is an ODT file?

ODT (OpenDocument Text) is the OASIS word-processing standard (ISO/IEC 26300), used natively by LibreOffice Writer, Apache OpenOffice Writer, and Collabora Office. It is also the mandated document format in several EU public administrations.

How do I convert DOCX to ODT online?

Upload your .docx file with the button above. The converter parses the Office Open XML, maps Word styles to OpenDocument equivalents, copies embedded images and tables, and writes a valid .odt archive.

Will my formatting be preserved?

Headings, paragraphs, bold/italic styling, lists, tables, footnotes, and inline images convert reliably. Some Word-only features (SmartArt, complex equation objects, certain text effects) may render slightly differently in LibreOffice because ODT has no direct equivalent.

Why convert to ODT instead of editing as DOCX in LibreOffice?

LibreOffice can edit DOCX, but every save round-trips through the Microsoft XML and can subtly change formatting. Working in ODT keeps the document in its native format and avoids that drift.

Can I batch-convert hundreds of DOCX files?

Online conversion is one file at a time. For bulk migrations, install Total Doc Converter: TotalDocConverter.exe C:\docx C:\odt -c odt processes a whole folder in a single command.

Are my uploaded files kept private?

Uploaded files are deleted automatically after you download the ODT. They are not stored, indexed, or shared. For confidential or government-restricted documents, run conversion locally with Total Doc Converter on your own machine.

Convert DOCX to ODT — Move Word Files Into LibreOffice and OpenOffice

DOCX is Microsoft's word-processing standard; ODT is the open equivalent used by LibreOffice, Apache OpenOffice, and Collabora Online. Converting DOCX to ODT lets you edit the document in fully free software, contribute to OpenDocument-only workflows, or comply with public-sector format mandates. Drop your .docx file above.

What Is DOCX?

DOCX is the Office Open XML word-processing format introduced with Word 2007 and standardised as ISO/IEC 29500. The file is a ZIP archive of XML parts describing paragraphs, styles, images, headers, and revision history. Microsoft Word is the reference implementation; LibreOffice, Google Docs, and Apple Pages all read DOCX as well.

What Is ODT?

ODT (OpenDocument Text) is the word-processing format defined by OASIS in 2005 and adopted as ISO/IEC 26300. An .odt file is a ZIP archive of XML parts that store text, styles, images, and metadata. ODT is the native format for LibreOffice Writer, Apache OpenOffice Writer, Collabora Office, and Calligra Words; it is also the legally mandated document format in several EU governments.

DOCX vs ODT — Format Comparison

Property	DOCX	ODT
Year standardised	2008 (ISO/IEC 29500)	2006 (ISO/IEC 26300)
Owner	Microsoft / Ecma / ISO	OASIS / ISO
Internal structure	ZIP of Office Open XML	ZIP of OpenDocument XML
Reference app	Microsoft Word	LibreOffice Writer
Licensing	Open spec, Microsoft control	Vendor-neutral standard
Government use	Common	Mandated in parts of EU
Best for	Microsoft 365 workflows	LibreOffice and OSS workflows

When Do You Need DOCX to ODT Conversion?

Edit a Word document in LibreOffice on Linux without Microsoft 365
Send a contract to an agency that only accepts OpenDocument files
Comply with EU or municipal mandates that require ODT submissions
Archive long-term in a vendor-neutral, fully open format
Hand off documents to a team standardised on Apache OpenOffice
Convert a Word manuscript before contributing to an OSS documentation set

Command-Line Conversion

Batch-convert an entire folder without opening the interface:

TotalDocConverter.exe C:\docx_files C:\odt_out /ConvertTo odt /ProcessRecursively

Add /ProcessRecursively to include subfolders. Save the command in a .bat file for scheduled or automated runs.

Online vs Desktop

Feature	Online (this page)	Total Doc Converter (desktop)
File size limit	50 MB	Unlimited
Batch conversion	One file at a time	Entire folders at once
Software install	None required	Windows 7–11
Output options	Standard	Full control
Command-line	No	Yes
Privacy	File uploaded to server	Stays on your computer
Price	Free	From $49.90

Feature	Online Converters	CoolUtils Desktop	WinWord Built-in	Other Software
Batch Conversion	Limited	✅ Unlimited	Manual only	Limited
File Size Limit	1-5MB	✅ No limits	System dependent	Varies
Privacy & Security	Upload required	✅ 100% offline	✅ Local only	Varies
Conversion Speed	Internet dependent	✅ Fast local processing	Slow	Medium
Advanced Options	Basic	✅ Full customization	Limited	Basic
Cost	Free/Premium	One-time purchase	Requires Office	Subscription
Formatting Preservation	Good	✅ Excellent	Good	Varies
Multiple Formats Support	Limited	✅ 40+ formats	Few formats	Limited