Are my DOC files uploaded anywhere?

Yes — this conversion needs software that cannot run in a browser, so the file is uploaded over an encrypted connection. It is deleted as soon as the job finishes, and the result is removed after 60 minutes.

Is converting DOC to DOCX free?

The free plan covers three server conversions a day, for files up to 25 MB. There is no watermark on the result.

Does converting DOC to DOCX lose quality?

DOC and DOCX describe content in fundamentally different ways, so the conversion is a reconstruction rather than a copy. The result is faithful, but not byte-for-byte equivalent. Formatting survives; macros, embedded objects and revision history usually do not.

Do I need to install anything to open DOCX files?

No. The conversion runs on our side and gives you a finished DOCX file; opening it needs whatever software normally handles Word Document.

DOCtoDOCX

Convert DOC to DOCX

Up to 3 files at once, 100 with Pro. Mixed formats are fine.

You can convert DOC to DOCX free and without an account: drop the file above and the DOCX is ready to download in a second or two. The file is sent over an encrypted connection, converted on our server and deleted as soon as the job finishes.

What DOC and DOCX are for

The old binary Word format. Still turns up in archives and government downloads.

The Word format since 2007. A ZIP archive full of XML, which is why it converts reasonably well.

How to convert DOC to DOCX

Drop your DOC file onto this page, or click to pick one.
Choose DOCX as the target and start the conversion.
Download the finished DOCX file.

DOC vs DOCX: what changes

DOC compared with DOCX
	DOC	DOCX
Full name	Word 97-2003 Document	Word Document
File extension	.doc	.docx
Media type	application/msword	application/vnd.openxmlformats-officedocument.wordprocessingml.document

Quality: The result is a close reconstruction rather than an exact copy. Check it before relying on it.
Where it runs: This conversion runs on our server, because it needs software a browser cannot run.
What can be lost: Formatting survives; macros, embedded objects and revision history usually do not.

DOC to DOCX: common questions

Are my DOC files uploaded anywhere?: Yes — this conversion needs software that cannot run in a browser, so the file is uploaded over an encrypted connection. It is deleted as soon as the job finishes, and the result is removed after 60 minutes.
Is converting DOC to DOCX free?: The free plan covers three server conversions a day, for files up to 25 MB. There is no watermark on the result.
Does converting DOC to DOCX lose quality?: DOC and DOCX describe content in fundamentally different ways, so the conversion is a reconstruction rather than a copy. The result is faithful, but not byte-for-byte equivalent. Formatting survives; macros, embedded objects and revision history usually do not.
Do I need to install anything to open DOCX files?: No. The conversion runs on our side and gives you a finished DOCX file; opening it needs whatever software normally handles Word Document.