Transforming .ACSM eBooks Into Compatible Kindle MOBI Format Step-by-Step Guide

Convert ACSM to Kindle Mobi

Posted by Ada Wang on 8/11/2023 11:26:59 AM.

You borrow some books from public library, you download them to your computer, then transfer them to your kindle device. Opps! You can’t open them!

This is a common thing in our daily life. You may ask me why, and how to. Don’t worry! Just keep reading to get your acsm readable on your kindle devices.

Please note that if you want to read acsm file on kindle , you must convert acsm to kindle mobi format. This is a necessary step.

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Why Should We Convert ACSM to Kindle Format

When you borrow or purchase ebookS from an online store or public library, what you probably download is an acsm file. It’s not an actual ebook, but only a link with database, allowing a program to download the book. ACSM file always comes with DRM.

ACSM is the short name of Adobe Content Server Manager, so you know that acsm is produced by Adobe. In fact, Adobe Digital Editions is the only program that has the right to open acsm file. When ADE see the acsm file, it will automatically download acsm to PDF or EPUB format. But ADE can be only installed on computer, Windows or Mac, but not kindle. So here comes the reason 1: acsm file can be opened only on computer with ADE.

Additionally, let’s talk about kindle device restrictions. We know reading kindle books on Kindle is enjoyable. However, this also brings a problem – we can’t read any ebooks if they are not kindle format. But our acsm file can only be downloaded to epub or pdf. In a word, the reason 2 is that Kindle devices don’t support acsm format.

Two reasons have explained clearly now, right?

ACSM can only be opened with ADE, but ADE can’t be installed on Kindle.
ACSM format is not readable on Kindle.

So we must convert acsm file to kindle format. As mobi is the native kindle format, so I recommend you convert acsm to mobi.

How to Convert ACSM File to Kindle Mobi?

This part I will show you how to convert ACSM to Kindle Mobi.

Step 1: Learn how to open acsm file

1 Install Adobe Digital Editions

ACSM file can only be opened with ADE on computer, so the first thing we have to do is to download and install ADE .

2 Authorize Adobe ID

After you get it installed, a window will pop up asking you to register an Adobe account, then authorize your ADE with this Adobe account.

3 Open acsm with ADE

Find your acsm file you downloaded on your computer. Then double-click the acsm file you downloaded, by default it will be opened with ADE. If not, right-click the acsm file and select “open with”–”Adobe Digital Editions”.

After you opened acsm with ADE, you will find that these acsm files have been converted to .epub or .pdf format. You can get them from the output path of ADE:

**For Windows: …\My Documents (Documents)\My Digital Editions …
For Mac: Users/Your computer name/Digital Editions …

Step 2: Convert acsm to kindle mobi with Epubor Ultimate

In Step 1 we have opened our acsm files, and converted them to epub or pdf in ADE. Then we need to use a acsm to kindle covnerter Epubor Ultimate .

1Download Epubor Ultimate for free

2Add acsm to the tool

Get Epubor Ultimate started. If your acsm files can be opened with ADE as step 1 shows, this tool will find your files automatically, and list them on the left side below “ADE” icon. All you have to do is just to drag them to the right area.

As the image shows, it will remove the DRM from acsm files automatically (if they have). You can see the “decrypted”.

3Convert Adobe ACSM to Mobi.

Set common “mobi” as the output format. Or you can also select azw3 as the output because Kindle also supports this format well.

Then click on “Convert to “ button, the conversion start soon, and then will complete fast.

Step 3: Transfer mobi to Kindle devices

From the decrypted output folder, you can see your converted mobi files. The left job is to transfer them to your kindle devices via USB connection or send-to-kindle service. From the homepage of your kindle you will see your new added files are listed. They are ready for you to open them for a happy reading.

Important: If you would like to transfer acsm to Kindle device via USB, we recommend you convert adobe to Mobi format. But please note that, Amazon Kindle has discontinued the Mobi/azw format supporting to its Send to Kindle service . In other words, we recommend you convert acsm to ePub or kindle azw3 format for adobe on kindle reading.

![author](https://www.epubor.com/images/uppic/1-22-2013 12-03-06 AM.png)

Ada Wang works for Epubor and writes articles for a collection of blogs such as ebookconverter.blogspot.com.

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17 Comments

antoxachu

Re:Convert ACSM to Kindle Mobi

05/13/2015 00:51:40

thanx for useful info!

yes

Re:Convert ACSM to Kindle Mobi

06/8/2016 19:50:09

thanks! this helped me out and it worked!

Tatiana

Re:Convert ACSM to Kindle Mobi

12/25/2016 12:03:23

Thanks for the information!

Re:Convert ACSM to Kindle Mobi

05/4/2017 05:43:14

¡Gracias por la información,es muy util¡ funcionó

Peter

Re:Convert ACSM to Kindle Mobi

09/10/2017 00:31:12

Only one problem, Ultimate Converter not free! $24.95

unhappy customer

Re:Convert ACSM to Kindle Mobi

03/15/2020 06:50:53

word of warning: it works, but unless you pay $25 then it will only give you a converted preview of the book (20% of it) and leave out the rest. wow what a massive waste of time, only to get stuck here.

unhappy

Re:Convert ACSM to Kindle Mobi

10/23/2020 04:21:36

its not worth it, it only decrypted 20% of the book, don’t waste your time. just say it in the description before wasting people’s time. the decrypter is 25$

Epubor

Re:unhappy

10/24/2020 09:21:17

Thank you for your comments. Epubor Ultimate is not a free software. Kindly note that we need our team to research, test to develop this software. Meanwhile, we offer the best customer service. This all need money. If you want the free alternative, try calibre. Have a nice day!

unhappy customer

Re:Epubor

01/16/2021 05:28:46

you should mention in your article that it is NOT free. It cost $25.

Epubor

Re:unhappy customer

01/18/2021 09:52:43

Thank you for your comments. Epubor Ultimate is not free. Please note the trial version will convert 20% of each book.

TheeChEese?????????

Re:Epubor

03/26/2022 03:56:01

A suggestion here, rather than converting 20% of each book, why not just allow a limited number of conversion and varieties for the trail period? A one month of 30 days of trail will be enough.(Ex. 3-5 conversions daily and hence limiting customers’ ability to test out large numbers of conversions. Epub-Mobi, PDF- Word etc.) Or perhaps, giving people the choice of unlocking premium to expand their number of converting and advance into some useful tools? Otherwise, it creates a pressure for people to “have” to purchase it and becomes a useless installation that some people will instantly uninstall after they realize that there isn’t even the space for experimentation and expectations. Not mentioning the fact that the software has a price wouldn’t have been a problem have you gave people a chance before they gave your team a chance. A 20% conversion of each file transmit the idea of making profit from the developers way too clearly for its own good.

The fact that all the resources costs money is nothing costumers don’t understand, but that one move made the software seems a bit too petty. Also decreases the chance of anybody promoting and attracting more traffic to your app.

Epubor

Re:TheeChEese?????????

03/28/2022 09:29:22

Thank you for your suggestion.

Re:Convert ACSM to Kindle Mobi

02/21/2021 23:35:28

Its not free.. Only FREE TO DOWNLOAD. deleted and moved to trash can.

Epubor

Re:Xx

02/22/2021 09:13:48

Thank you for using our software. Yes, Epubor Ultimate is not the freeware but the paid software with free trial.

Re:Convert ACSM to Kindle Mobi

10/30/2022 09:26:12

Charges $25 if you want to actually read the book. Useless.

rus

Re:Convert ACSM to Kindle Mobi

02/14/2024 23:43:04

Both solutions do not work (Mac & PC). Adobe gives error: Unable to download. Error hetting License. License Server Communication Problem: E_GOOGLE_DEVICE_LIMIT_REACHED

epubor

Re:rus

02/18/2024 08:34:59

The first option would be for you to remove that book from a device it’s currently downloaded on if possible, then try to re-download the book afterwards on the new device in question.
If you are unable to try the first option, or if it doesn’t work, the next option would be for google community support team to reset the device limit in your account. Tell them your books’ ISBN or Google books ID and permit them to reset the device limit. This will remove all of your books from your devices associated with this account. You would be able to re-download the books again afterwards.

Solve Lab

Transforming .ACSM eBooks Into Compatible Kindle MOBI Format Step-by-Step Guide