DOCX to MOBI Converter

Convert DOCX (Microsoft Word document) files to MOBI online, for free, with nothing to install.

To convert DOCX to MOBI, select or drop your .docx file above, check that MOBI is chosen as the output, and click Convert. This conversion runs on our server, and your files are deleted 72 hours later.

What is a DOCX file?

DOCX – Microsoft Word document. DOCX is the document format of Microsoft Word since 2007: a ZIP of XML files that holds text, styles, tables and pictures. Word, LibreOffice, Google Docs and most word processors open it.

DOCX Converter →

What is a MOBI file?

MOBI – Mobipocket e-book. MOBI is the e-book format of Mobipocket, once the format of Kindle e-readers. Older Kindles open it; newer ones prefer EPUB or AZW3. Books bought in a store often have DRM, which stops them from being converted.

MOBI Converter →

How to convert DOCX to MOBI

  1. Click Select File, or drop your .docx files anywhere on this page. You can add several at once.
  2. Check that MOBI is chosen as the output format. On this page it is picked for you.
  3. Click Convert. When a file has to go to our server, the button says Upload and convert instead.
  4. Click Download next to each file when it's done.

DOCX vs MOBI: how they compare

DOCXMOBI
LayoutFlowing textFlowing text
EditableYesWith e-book tools
Created byMicrosoft (Office Open XML), 2007Mobipocket, 2000
Best forDocuments you or others will keep editingOlder Kindle devices

Good to know

  • The MOBI e-book is made by calibre from the text, headings and pictures of the DOCX file; a cover is not created.

Frequently asked questions

Is converting DOCX to MOBI free?

Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.

Are my DOCX files uploaded anywhere?

This conversion runs on our server, because reading a DOCX file needs LibreOffice, which does not run in a browser. Your file is sent over an encrypted connection, and both it and the result are deleted 72 hours after the conversion. The server has no internet access while it works on your file.

How large can the DOCX file be?

Up to 1 GB per file. This conversion runs on our server, which accepts files up to that size.

Will the MOBI look the same as the DOCX?

The text and structure are kept: headings, lists, tables, bold and italic. Exact page layout, fonts and spacing may differ, because MOBI is flowing text, not fixed pages.

Can I convert several DOCX files at once?

Yes. Add as many files as you like; they are converted one after another, and each one gets its own Download button.

Convert DOCX to other formats

Convert other documents to MOBI

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