Step 1: Provide your DOC files using the button above or by toss and let go.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Fetch your converted DOCX files.
DOC to DOCX Conversion FAQ
Is the DOC to DOCX converter free?
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Yes. One conversion an hour is free, with no account needed, for a file within the free size limit. A paid plan removes the hourly limit and the size limit, and lets you add several files to one job.
Is the older binary Office format still a safe bet?
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It opens everywhere, but it is a compatibility choice rather than a good one. The binary formats predate the XML packages, carry macro payloads that many mail servers strip on sight, and are being steadily deprecated by Microsoft itself. Use them when a specific piece of old software demands them, and the XML format otherwise. DOCX still reflows differently between renderers, so a document that paginates correctly in Word can shift in LibreOffice or Google Docs.
Why convert between DOC and DOCX when they are the same kind of file?
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Because the file has to open on the other end, and version and vendor differences decide whether it will. Two formats in the same family can still be years apart in what software reads them, how large they are on disk, and which features they carry. The conversion normalises the file onto whichever one the recipient actually supports. DOC is the binary Microsoft Word format used from Word 97 through Word 2003. DOCX is Office Open XML, the format Word has produced by default since 2007 and an ISO standard since 2008.
How big a DOC file can I convert to DOCX?
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Free conversions have a size limit per file, set by the type of file, and the page tells you when a file is over it. A paid plan removes that limit, so much larger files can be converted.
Can I convert many DOC files to DOCX at once?
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Several files in one job need a paid plan. Free use is one file per conversion, one conversion an hour. On a paid plan you can add several files to one job, then download each result on its own or all of them in one ZIP.
Does the DOC to DOCX converter work on phones / tablets?
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Yes — the UI is responsive and the conversion pipeline runs server-side, so mobile devices upload-then-download just like desktops. iOS and Android browser file pickers (camera roll, Files app) work end-to-end without an app.
Which browsers does the DOC to DOCX converter support?
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Chrome, Firefox, Safari (15+), Edge, and Opera. The converter uses a plain `<input type="file">` upload — no WebAssembly or PWA dependencies — so even older browsers convert DOC to DOCX successfully.
Are my DOC files kept private?
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Yes. Uploaded DOC files are processed on our own conversion servers, no person reviews them, and they are never shared. The upload and the converted DOCX are both deleted automatically about 24 hours after the conversion, which leaves time to download the result. See /privacy/ for the full policy. DOC is still the format a great many corporate templates, legal precedents and government forms are stored in.
What if the DOCX download does not start automatically?
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Disable any pop-up blocker, then click the download button manually. The result link stays active for 24 hours, so if your network fails mid-download you can re-trigger from the result page without re-uploading the DOC.
How long does DOC to DOCX conversion take?
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It depends on the size and length of the file. Small documents and images are usually ready quickly. Long videos take the longest, because most video conversions re-encode every frame. DOCX is inspectable, diffable and readable by Google Docs, LibreOffice, Pages and every modern word processor.
