DOC to DOCX
Convert DOC files to DOCX in seconds, for free. Nothing to install.
Files are deleted from the server automatically after 1 h.
Why convert DOC to DOCX?
- DOCX is the modern Office format: smaller files and full compatibility with Microsoft 365.
- DOCX is one of the most widely supported formats — it opens almost anywhere.
You don't need to install any software to convert DOC to DOCX. Upload your file, choose DOCX and download the result a few seconds later. The conversion runs on our servers and your file is deleted automatically after 1 h.
DOC vs DOCX: comparison
| Feature | DOCMicrosoft Word 97–2003 Document | DOCXMicrosoft Word Open XML Document |
|---|---|---|
| Developer | Microsoft | Microsoft |
| Released | 1997 | 2007 |
| Type | document | document |
| Editable content | ✓ yes | ✓ yes |
| Opens with | Microsoft Word, LibreOffice Writer, Google Docs | Microsoft Word, LibreOffice Writer, Google Docs |
Tip: fonts and tables are preserved as far as possible. Multi-page documents converted to images are delivered as a ZIP.
How it works
- Choose or drop your DOC file.
- Pick DOCX as the output format.
- Click “Convert” and download your file.
DOC to DOCX: questions and answers
Will quality be lost when converting DOC to DOCX?
Text, tables and images are kept. Very complex layouts or rare fonts may shift slightly.
How long does DOC to DOCX conversion take?
Usually 1–10 seconds. Several files are processed in parallel.
What is the maximum DOC file size?
Up to 50 MB per file and up to 20 files at once — for free.
Can I convert DOC to DOCX on my phone?
Yes. TezConvert works in any browser on Android and iPhone — no app needed.
How do I open a DOCX file?
DOCX files open in: Microsoft Word, LibreOffice Writer, Google Docs.
Are my files safe?
Files are used only for the conversion, never shown to anyone, and deleted automatically after 1 h. The original is deleted right after conversion.
⇄ Need the opposite? Convert DOCX to DOC →