File Conversion
DOC to DOCX Converter
Convert legacy Word documents (DOC) to modern DOCX format. Upgrade to the latest Word standard.
Drop a file to begin
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How to convert DOC to DOCX
- 1
Upload the legacy .doc file.
- 2
LibreOffice Writer reads the binary Word format and writes Office Open XML.
- 3
Download the .docx document.
Notes on this conversion
The legacy binary Word format goes into Office Open XML, the container Word has used since 2007. The pair is published as deterministic and the conversion-loss table records no entry for it, so text, styles, tables and images are carried across rather than approximated. One thing does not travel, and it is a rule of the format rather than of the converter: .docx cannot store macros at all — the macro-bearing member of the family is the separate .docm — so VBA in the original is left behind.
Specifications
- Max file size
- Up to 100 MB per file
- Processing speed
- Typically under 10 seconds
- Quality
- Optimized for best output quality
- Batch support
- Multiple files supported
Your Files Are Safe
All files are encrypted with 256-bit TLS during transfer. Uploaded files are stored temporarily and automatically deleted about an hour after upload. We never access, read, or share your files.
Frequently Asked Questions
Is anything lost on the way?
This pair is published as deterministic and the conversion-loss table records no entry for it. Text, styles, tables and images are carried into the new container.
What happens to macros stored in the .doc?
They do not travel, and that is the format's rule rather than the converter's: .docx cannot hold macros at all. The macro-bearing member of the family is .docm, which is a separate format.
Which file should be kept afterwards?
The .docx. It is the current Word standard, it is what every supported Word conversion here starts from, and the legacy .doc is worth keeping only for a reader that cannot open the new one.
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