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Convert DOC to DOCX

Turn DOC files into DOCX in seconds — free, secure, and no signup required.

Free tier: 5 conversions/day, files up to 50 MB, ad-supported. Need more? See Pro plans →
  • 256-bit SSL encryptionYour files are protected end-to-end
  • Lightning-fast conversionsProcess files in seconds, not minutes
  • All major document formatsPDF, DOC, DOCX, XLS & more
  • No registration requiredStart instantly — 5 free conversions a day
  • Files auto-deleted in 1 hourGDPR-friendly: we never keep your files
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Select or drop a file here

Max file size 50 MB. Sign up for more

Select several files to convert them in one go.

DOCX is the modern, XML-based Word format that replaced the older binary DOC. Converting DOC to DOCX modernises legacy files for smaller size, better compatibility, and current features.

Convert DOC to DOCX – Free Online DOC to DOCX Converter

Why convert DOC to DOCX?

  • Smaller files and better reliability than legacy DOC.
  • Full compatibility with modern Word and Google Docs.
  • Access newer formatting and collaboration features.

How to convert DOC to DOCX

  1. Upload your DOC file using the area above.
  2. DOCX is preselected as the target format.
  3. Click Start and wait for the conversion to finish.
  4. Download your converted DOCX file.
Convert to DOCX
PDF to DOCXXLS to DOCXXLSX to DOCXPPT to DOCXPPTX to DOCXTXT to DOCXRTF to DOCXODT to DOCX
Convert from DOCX
DOCX to PDFDOCX to XLSDOCX to XLSXDOCX to PPTDOCX to PPTXDOCX to TXTDOCX to RTFDOCX to ODT
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All conversions to DOCXAll conversions to DOC

DOC to DOCX — Frequently Asked Questions