Convert DOC to DOCX
Free and instant — your DOC files are processed securely on our servers and deleted right after conversion. Nothing is stored.
How to convert DOC to DOCX
- Step 01
Add your DOC files
Drop them into the box above or click to browse. You can add several files at once.
- Step 02
Conversion starts instantly
Your file is sent to our servers, converted and deleted right away — no sign-up, no queue, no waiting.
- Step 03
Download your DOCX files
Save each file individually or grab them all at once. Done.
Why convert DOC to DOCX?
Converting DOC to DOCX brings an old Word 97-2003 document up to the modern format — smaller, more robust and the default in every current word processor. The most common reason to convert a .doc file: it just won't open cleanly in newer software.
DOC vs DOCX at a glance
DOC is the legacy Word format — a binary file superseded by DOCX in 2007, still floating around from old templates and archives. DOCX is the standard editable document format — rich text, images and tables in a file every version of Word and most office suites can open and edit.
| Property | DOC | DOCX |
|---|---|---|
| Extension | .doc | .docx |
| Full name | Microsoft Word 97-2003 Document | Microsoft Word Document |
| First released | 1983 | 2007 |
| Developed by | Microsoft | Microsoft |
| Compression | Lossless | Lossless |
| Transparency | No | No |
| Animation | No | No |
| Best for | old Word documents from Office 97-2003 that newer apps struggle to open | editable documents, reports and letters compatible with Microsoft Word |
DOC to DOCX — frequently asked questions
Is this DOC to DOCX converter really free?
Yes — completely free, with no sign-up, no watermarks and no daily limits.
Will I lose any content converting DOC to DOCX?
Text, headings, tables, images and formatting are preserved. Very old macros or binary-specific features may not carry over.
Is the conversion private?
Your DOC is sent to our servers, converted using LibreOffice, and the result is returned to you. Your file is deleted immediately after conversion and never stored.
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