DOC to DOCX Converter

Select files for conversion or just drag and drop them to the upload area

How to convert DOC files to DOCX online?

Step 1.

Upload DOC-file

Click "Choose File" button to select a doc file on your computer. DOC file size can be up to 50 Mb.
Step 2.

Convert DOC to DOCX

Click "Convert" button to start conversion.
Step 3.

Download your DOCX

Let the file convert and you can download your DOCX file right afterwards.

Information about DOC and DOCX file formats

Name DOC DOCX
Full name DOC - Microsoft Word Binary File Format DOCX - Office Open XML Document
File extension .doc .docx, .docm
MIME type application/msword application/vnd.-openxmlformats-officedocument.-wordprocessingml.-document
Developed by Microsoft Microsoft
Type of format document file format Document file format
Description DOC is a filename extension for word processing documents, most commonly in the proprietary Microsoft Word Binary File Format. In Microsoft Word 2007 and later, the binary file format was replaced as the default format by the Office Open XML format, though Microsoft Word can still produce DOC files. The Office Open XML file formats are a set of file formats that can be used to represent electronic office documents. There are formats for word processing documents, spreadsheets and presentations as well as specific formats for material such as mathematical formulae, graphics, bibliographies etc.
Technical details Binary DOC files often contain more text formatting information (as well as scripts and undo information) than some other document file formats like Rich Text Format and HyperText Markup Language, but are usually less widely compatible. Office Open XML documents are stored in Open Packaging Convention (OPC) packages, which are ZIP files containing XML and other data files, along with a specification of the relationships between them. Depending on the type of the document, the packages have different internal directory structures and names.
Associated programs Microsoft Word, OpenOffice.org Writer, IBM Lotus Symphony, Apple Pages, AbiWord. Microsoft Office, LibreOffice, Kingsoft Office, Google Docs.
Wiki https://en.wikipedia.org/wiki/Doc_(computing) https://en.wikipedia.org/wiki/Office_Open_XML_file_formats