DOC → DOCX

Upgrade old DOC files into modern DOCX format for better compatibility and security. Process multiple files simultaneously with our batch conversion feature.

Batch Processing: Select and convert multiple DOC files at once

About this tool

The DOC → DOCX converter helps you upgrade your old Microsoft Word documents (.doc) to the modern DOCX format. DOCX files are smaller, more secure, and work seamlessly with modern software including Microsoft Word, Google Docs, and LibreOffice.

How to use:

Upload one or more .doc files (up to 10 at once)
Click the Convert button
Wait a few seconds while your files are processed
Download your converted DOCX files

Features:

1 Fast and reliable DOC to DOCX conversion
2 Batch conversion: upload multiple files at once
3 Preserves formatting, fonts, and layout
4 Compatible with all modern browsers and devices
5 Secure: your files are processed quickly and not stored permanently

Notes:

Maximum of 10 files per batch conversion
Some very old DOC files may have minor formatting differences after conversion
Images, tables, and formatting are preserved whenever possible

Common use cases

Document modernization — upgrade old documents to modern format
Compatibility — ensure documents work with newer software versions
File size reduction — DOCX files are typically smaller than DOC files

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Frequently Asked Questions

How many DOC files can I convert at once?

You can convert up to 10 Word documents simultaneously in one batch process.

Is there a file size limit for conversion?

Yes, individual DOC files should be under 20MB for optimal performance.

Will the formatting be preserved in conversion?

Yes, our converter maintains fonts, formatting, images, and layout from your Word documents.

How do I download my converted files?

After processing, your converted DOCX files will be bundled into a ZIP archive for easy download.

Are my files secure during processing?

Absolutely. Your files are processed securely and are automatically deleted from our servers shortly after conversion.

What's the difference between DOC and DOCX?

DOC is an older binary format while DOCX is a modern XML-based format with better security and smaller file sizes.

Is this DOC to DOCX converter really free?

Yes, our document conversion tools are completely free to use with no hidden charges.