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UUTOOLS.NET

Free Online E-book Converter

Convert e-books between EPUB, Kindle (MOBI, AZW3), FB2, PDF and Word online.

or drag them here, or paste with Ctrl+V / ⌘V

Documents and e-books (DOCX, DOC, DOCM, DOTX, DOT, ODT, RTF, TXT, ABW, ZABW, PAGES, HWP, HWPX, LWP, SDW, WPD, WPS, XLSX, XLS, XLSM, XLTX, XLT, ODS, OTS, FODS, CSV, TSV, DIF, SLK, NUMBERS, ET, SDC, HTML, MD, RST, TEX, PDF, XPS, DJVU, EPUB, MOBI, AZW3, FB2, LRF, PDB, AZW, PRC, LIT, HTMLZ, TXTZ, PMLZ, RB, TCR, CHM, CBZ, CBR, CB7) · up to 10 files at once

Conversion options

PDF pages

Leave empty for all, or type e.g. 1-3, 5, 8-

Resolution
PDF document
Page size
Images per page
Image resolution in the PDF
Image
Icon sizes (px)
Video

Lower resolutions reduce file size. The video will not be enlarged.

Audio
Bitrate

Higher means better sound and a larger file. “Auto” keeps the bitrate of the original (at least 128 kbit/s); from lossless files it uses the format’s high-quality setting.

Sample rate
Channels
Cut (optional)

Times such as 1:30 or 0:45.5. Leave empty to keep the whole recording.

Picture

The video shows this picture for the whole length of the sound – for example to upload music or a podcast to YouTube.

Video size
Document
Resolution
Pages to convert

Several pages arrive as a ZIP with one image per page.

Shown by e-readers in the library; leave empty to keep what the document says.

PDF/A-2b embeds all fonts so the file looks the same in many years; required by many courts and public offices.

Scales every sheet so it fits on a single page instead of being split across several.

Sheets

CSV and TSV hold one table: with “Every sheet” each sheet becomes its own file, together in a ZIP.

Separator

Excel in many European languages expects a semicolon; most other programs a comma.

Convert on our server?

If you continue, the file is uploaded over an encrypted connection and converted on our server. You can keep using the site meanwhile. The original is deleted as soon as it is converted; the result is kept for 7 days so you can download it, and you can delete it at any time. Files are never shared or used for anything else.

Documents and e-books are uploaded only after you accept and are converted on our server. The input is deleted after processing; results are kept for 7 days. Privacy details

How to use: E-book Converter

  1. 1 Choose or drop your e-books (up to 10 at once).
  2. 2 Pick the output format for each book – for example AZW3 for Kindle or EPUB for other readers.
  3. 3 Optionally set the title and author under “Options”.
  4. 4 Click “Convert” and confirm the upload; follow the progress of each book.
  5. 5 Download the books when they are ready (kept for 7 days).

About this tool

Read any book on the device you own: turn EPUB into AZW3 for a Kindle, MOBI into EPUB for Kobo or Apple Books, FB2 into EPUB, or an e-book into PDF or Word to print or edit it. Headings become the table of contents, and you can set the book’s title and author.

Up to 10 books are converted at once in the background. E-books protected with DRM cannot be converted.

Documents are converted on our server: the upload starts only after you confirm, the original is deleted after conversion and the result is kept for 7 days unless you delete it sooner.

Frequently asked questions

Which e-book formats are supported?

You can convert from EPUB, MOBI, AZW3, FB2, LRF, PDB, AZW, PRC, LIT, HTMLZ, TXTZ, PMLZ, RB, TCR, CHM, CBZ, CBR and CB7, and to DOCX, DOC, DOCM, DOTX, DOT, ODT, RTF, TXT, ABW, ZABW, HTML, MD, RST, TEX, PDF, XPS, DJVU, EPUB, MOBI, AZW3, FB2, LRF, PDB, LIT, HTMLZ, TXTZ, PMLZ, RB, TCR, OEB, CBZ, JPG, PNG, WebP, AVIF, GIF, BMP and TIFF.

Which format does my Kindle need?

AZW3 for current Kindle devices and apps; MOBI for very old ones. You can also send an EPUB to Kindle with Amazon’s “Send to Kindle”.

Can I convert books with DRM?

No. Books protected with DRM (copy protection) cannot be converted; that would break their licence.

How many books can I convert at once?

Up to 10 at a time, each up to 100 MB.

What happens to my books?

They are uploaded only after you confirm. Originals are deleted right after conversion; results are kept for 7 days unless you delete them sooner.

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