How to batch convert eBooks on Windows 11/10

Want to batch convert eBooks on your Windows 11/10 PC? This article will help you convert multiple eBooks from one format to another simultaneously. If you have a lot of eBooks and want to convert all of them, the batch convert feature will help you. It helps to save time as well as effort. Now the question is how to do eBook batch conversion on your PC. Well this post will answer your question.

Here we are going to discuss two different methods to batch convert eBooks. You can convert multiple eBook formats using the listed methods including EPUB, PDF, MOBI, LIT, FB2, PDB, LRF, PDB, AZW3 and many more. Now let’s take a look at the methods of batch converting eBooks.

How to mass convert Epub to Mobi?

You can bulk convert EPUB to MOBI using a free tool. There are many free desktop software that lets you batch convert EPUB to MOBI. You can try caliber or Hamster eBook Converter to do EPUB to MOBI batch conversion. Or, you can try a free online service like online-convert.com to batch convert EPUB to MOBI.

How to batch convert eBooks on Windows 11/10

You can use the following methods to batch convert eBooks on your Windows 11/10 PC:

  1. Batch convert eBooks using free desktop software.
  2. Batch convert eBooks online using free web service.

Now let’s develop the above methods!

1]Batch Convert eBooks Using Free Desktop Software

There are several eBook converter software that allows you to convert multiple eBooks at once. If you want to use a free one, here are a few options you can try:

  1. caliber
  2. Hamster eBook Converter
  3. Soft4Boost document converter


caliber is free and open source eBook management software for Windows 11/10 and other operating systems. Using it, you can batch convert eBooks of various formats. It supports a large number of input and output eBook formats including EPUB, AZW3, PDF, MOBI, FB2, DOCX, LIT, LRF, RTF, TXT, TCR, HTMLZ, PDB, etc. Let’s see how you can batch convert eBooks in this free software.

How to batch convert eBooks on Windows 11/10 using caliber

Here are the main steps for converting multiple eBooks at once using caliber:

  1. Download and install caliber.
  2. Start the caliber.
  3. Import the source eBook files.
  4. Click the Convert Books button.
  5. Select the eBook output format.
  6. Press OK button to start mass conversion of eBooks.

Let’s discuss the above steps in detail.

First of all, you need to download and install this handy eBook management software. And then, launch the app to start using it.

Now click on the Add books option to browse and import multiple eBooks you want to batch convert. Then select all eBooks from its interface.

After that, press the Convert Books> Convert by Mass and in the convert dialog window, select the output format of the eBook.

You can also configure various settings like fonts, layout, layout, appearance, table of contents, book cover, metadata, etc.

Finally, hit the OK button and it will start to batch convert your eBooks to the selected output format.

Caliber is a great tool for managing your eBooks, viewing eBooks, downloading eBooks, and converting eBooks. You can find many practical tools there.

Read: How to convert LIT to EPUB or MOBI on Windows?

2]Hamster eBook Converter

You can also try Hamster eBook Converter to batch convert eBooks. As the name suggests, this is a dedicated free eBook converter that supports a number of eBook formats. Some of the output eBook formats that you can batch convert eBooks to include EPUB, MOBI, LIT, LRF, FB2, PDF, PDB, PRC, TXTZ, etc. You can also convert eBooks to formats compatible with devices, such as Microsoft, Blackberry, Apple iPad, ASUS, Amazon Kindle, CrossElec, boeye, PAGEone, WexLer, Sony PRS-300, etc.

Here are the main steps to mass convert eBook in Hamster eBook Converter:

  1. Download and install Hamster eBook Converter.
  2. Launch the software.
  3. Add the source eBooks and click the Next button.
  4. Select the output format of the eBook.
  5. Hit the Convert button.

First, download and install this handy batch eBook converter. You can download it from here. After that, launch the software to use it.

Now click on the Add files to import your input eBook files, then press the Next button.

Then select the output format of the eBook; you can select a standard file format or an eBook format compatible with the device, and then press the button Convert button. It will ask you to provide an output location to save the resulting eBooks. Do that and it will batch convert e-books.

See: Best Free ePub to PDF Converter Tools for Windows PC

3]Soft4Boost document converter

Soft4Boost Document Converter is another software that allows you to perform batch conversion of eBooks. It only supports a few standard eBook formats to convert your eBooks, like EPUB, MOBI, PDF, DOC, DOCX, RTF, and FB2. However, you can import eBooks in any of these formats including EPUB, PDF, PRC, MOBI, AZW, FB2, and EPUB.

Here are the steps to do eBook batch conversion using Soft4Boost Document Converter:

  1. Download and install Soft4Boost Document Converter.
  2. Launch the app.
  3. Add eBook files to it.
  4. Select the eBook output format.
  5. Hit the Convert Now button.

Simply download and install Soft4Boost Document Converter on your PC, then start the software. Now add the input eBook file using the dedicated option.

Then from the Output format panel present on the right side, select an eBook output format.

Finally, provide the destination location and then press the Convert now button to start mass conversion of eBooks.

Want to use this free document converter to batch convert eBooks? You can have it here.

See: How to Convert eBook to Audiobook on Windows

2]Batch Convert E-Books Online Using Free Web Service

You can also use a free online service through which you can batch convert e-books online. It is a simple and convenient way to do mass conversion of eBooks online in web browser. There are several free web services for batch converting eBooks. Some of them are:

  1. e-conv.com
  2. ToePub
  3. conversion-en-ligne.com


e-conv.com is a free online service for mass converting eBooks. It allows you to convert various eBook formats including EPUB, MOBI, PDF, AZW, TXT, etc. You can batch convert up to 10 ebooks at a time using it. Let’s see how to use this online batch eBook converter.

How to batch convert eBooks online:

You can follow the steps below to convert multiple ebooks at once online:

  1. First, open a web browser.
  2. Now go to the e-conv.com website.
  3. Then import your source eBooks into it.
  4. After that, select the output eBook formats among MOBI, EPUB, FB2, PDF, DOCX, etc.
  5. Then configure options like eBook reader, title, and author.
  6. Finally, click on the Convert button and it will start the eBook batch conversion.

It also offers a convenient autostart option that starts the batch e-book conversion as soon as you import the source e-books.

Read: How to Convert PDF to MOBI on Windows 10


ToePub is another free web service that can batch convert eBooks right in a web browser. You can convert eBooks to EPUB, PDF, Kindle MOBI, AZW3, FB2 and other file formats. Let’s see the steps to use it:

  1. First, launch a web browser.
  2. Now go to the ToePub website.
  3. Then select the output format from those available like MOBI, EPUB, AZW3, FB2, LIT and LRF.
  4. After that, import the source eBooks files and the eBooks will be batch converted.
  5. Finally, you can download individual output eBooks or the ZIP file containing all of your resulting eBooks.

See: Best Free DRM Removal Software for eBooks for Windows PC


online-convert.com is a free online file converter that also allows you to batch convert eBooks in a web browser. You can convert many types of files using it, including documents, images, audio, video, and e-books. Let’s discuss the steps to use it.

First, open a web browser and navigate to the online-convert.com eBook conversion page.

Now on the left side click on the output format you want to convert your eBooks to, such as Convert to EPub, Convert to MOBI, Convert to LIT, Convert to AZW, Convert to PDF, etc.

Then import your source eBooks by clicking on the Choose files button. You can also download your source eBook files from a URL, Dropbox, or Google Drive.

After that, you can select the target ebook reader and configure options like ebook title, ebook author, version, base font size, add border, etc. Finally, press the Start Conversion button to start the eBook batch conversion.

Once the conversion is complete, you will be able to download the resulting files from its server.

Read: Edit e-books in EPUB format with Sigil EPUB ebook Editor

What is the best eBook converter?

In my opinion, caliber is the best eBook converter because it supports batch eBook conversion. Besides that, it also supports a variety of eBook formats and offers various additional utility tools for eBooks. In addition to that, if you need to optimize your eBooks for specific eBook devices, you can try Hamster eBook Converter.

That’s it!

Related reading: 10 best free ePub readers for Windows PC.

How to batch convert eBooks on Windows 11/10