Convert a document to DOCX Add documents Click here to choose files or Drop them hereUp to 50 files#Source fileSizeStatus Input format:DOC, TXT, RTF, ODT, WPS Automatically start I consent to collecting, storing and processing my data from this form according to Privacy Policy and Terms of Use.ConvertDOCX – Office Open XML DocumentFormat introductionThe 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 formula, graphics, bibliographies etc.Technical detailsOffice 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.