How to Convert DOC to DOCX (and Why You Should)

Files saved as .doc come from Word 97 to 2003. They still circulate in offices, schools and government forms. They open slowly in modern apps, sometimes with "compatibility mode" in the title bar, and phone viewers may show them badly.

Quick answer

Add your .doc file, convert, and download a .docx. The new file is usually smaller and opens in Word, Google Docs, LibreOffice and phone apps.

Why DOCX is better

• Smaller size. DOCX files are compressed zip packages.
• Wider support. Phones, browsers and cloud editors handle DOCX best.
• Stability. The format is open and documented, less prone to corruption.
• Features. Modern styles, comments and accessibility features work properly.

Steps

1. Open the tool and add the .doc file.
2. Press convert.
3. Download the .docx and open it to check.

What to check afterwards

• Fonts. If the file used a font you do not have, Word substitutes another.
• Tables and images. They are kept as far as possible; complex layouts may shift slightly.
• Bangla text. Unicode text carries over. Legacy Bijoy-encoded text remains as typed in that font; convert it with the Bijoy to Unicode tool.
• Macros. DOCX files do not contain macros, and .doc macros are not carried over.

Tips

• Keep the original .doc until you have checked the new file.
• If you must send the document to a person with an old Word, use DOCX to DOC.
• For a fixed layout to share, convert to PDF instead.

The conversion runs in your browser; files are not stored.