DOC to DOCX Converter
Convert DOC to DOCX online with Convertig.com. Fast, free, and secure document converter—no software required. Upload your DOC file and get DOCX instantly.
100 MB maximum file size and upto 5 files.
300+ formats supported
We support more than 25600 different conversions between more than 300 different file formats. More than any other converter.
Fast and easy
Just drop your files on the page, choose an output format and click "Convert" button. Wait a little for the process to complete.
How to use DOC to DOCX Converter?
- Click the “Choose Files” button to select your files (up to 20 files at a time)
- Click on the “Convert” button to start the conversion
- When the status change to Done” click the “Download” button
DOC to DOCX Converter FAQs
The main benefit is modernization and reliability. The DOCX format is more stable, much less prone to file corruption, and generally creates smaller file sizes compared to the older DOC format. Converting ensures your document is compatible with all the latest features of Microsoft Word and other word processors.
For the vast majority of documents, your formatting and layout will be perfectly preserved. However, for extremely complex files with intricate tables, legacy fonts, or old macros, there is a small possibility of minor visual shifts. It's always a good practice to quickly review the converted DOCX file.
Your DOCX file is smaller because it uses a more efficient structure. A DOCX is essentially a ZIP archive that contains all the parts of your document, like text and images, as individually compressed XML files. The older DOC format is a single, larger binary file that is not as efficiently structured.
Not without extra help. Versions of Microsoft Word from 2003 and earlier cannot open DOCX files natively. The user would need to install a special "Compatibility Pack" from Microsoft. If you know for sure that your recipient is using very old software, it might be safer to keep the document in the original .doc format.
It means your document's content and formatting are stored in a structured, text-based way, similar to a web page. This open and modern structure makes DOCX files more robust, easier for different software programs to read accurately, and far less likely to become corrupted compared to the complex, proprietary binary structure of the old DOC format.