I would like to upload all the books I have stored in my calibre library to kindle's cloud so that I can synchronize my reading (whispersync "sync to last page read" function) across my android and kindle voyage. Is this possible?

I have seen the email to kindle function but have read that this can cost money and am unsure if I will have to do each book individually. I live in Australia and am confident with calibre use. None of my books have DRM.

This link provided by Woeitg: http://the-digital-reader.com/2015/02/07/upload-ebooks-documents-kindle-account/ Cleared up my confusion about emailing to kindle costing money. It seems this only applies only to kindle devices using 3G. appending the '.free' to the email ensures only wifi is used and no charges are applied.

  • Where did you read send to kindle function may cost money? Can you share the link?
    – Sadegh
    Feb 28, 2016 at 12:55
  • take a look at hard way of following link, maybe it is the answer of your question: the-digital-reader.com/2015/02/07/…
    – Sadegh
    Feb 28, 2016 at 12:56
  • This is probably not what you want to hear, but I strongly recommend uploading to Google Play books cloud instead of the Kindle cloud. I can easily download the kindle app on android devices, but not vice versa. The interface for uploading to google cloud is much easier (you can drag and drop from the desktop and select multiple items). Of course, I'm talking about .epub files instead of kindle files, but really if you are going the no DRM route, epubs are better to use anyway. Mar 2, 2016 at 3:33
  • What this means is that on my android device I can view all my purchased Kindle ebooks easily as well as my uploaded Google Play books. BTW, Play Books app renders books incredibly well. Mar 2, 2016 at 3:35
  • I am following the instructions from the-digital-reader.com/2015/02/07/… (provided by woeitg) awaiting a response to a query before attempting emails.
    – SamKowald
    Mar 5, 2016 at 3:41

1 Answer 1


If you use the Send to Kindle function, your books may end up stored as Documents. Kindle ownership gives 5 GB Cloud storage, so log into your Cloud Storage first and see how much you are already using (all your Documents back up here). If you want more storage, you have to buy it.

How to do it? I'd use Calibre's own download to disk function to put them on my computer, locate the files and right click to use the Send to Kindle. Yes, 100 books is a lot, but if you want to send big batches of data, I'd check with Amazon Customer service first to see if there is a way to do that. I suspect not unless you submit zip files, since they won't want their system flooded.

  • How do you know it's 5GB of Cloud storage?
    – Thufir
    Dec 24, 2018 at 13:52

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