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Calibre (64-bit)

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Editors' Rating:
Average User Rating:
out of 6 votes out of 0 votes

Quick Specs

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  • Date Added:
    Oct. 18, 2016
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Editors' Review


Quicker than you can turn a page, e-books have gone from a novelty to a publishing mainstay and will soon be the dominant format (perhaps by the time you're reading this). While many book-lovers use handheld e-book devices such as Amazon's Kindle, others read e-books on their tablets or even their smartphones. All you need is a good e-book reader. We tried the 64-bit release of Calibre, the free, open-source reader and library manager. It's a good e-book reader.

Calibre's welcome wizard let us choose from a long list of interface languages. It also prompted us to set up our e-book library by creating a destination folder or browsing to existing e-books. By default, Calibre creates its library folder in your Documents library. Of course, you can change it later, but it's not a bad idea to start with the right folder in the right location, since your e-book collection may grow rapidly when you see what's available for free (or cheap). It's also easy to establish your e-book library on a USB drive, memory card, or external drive. (You can lug your entire library around with you without giving yourself a hernia! Try that with hardbacks.) Next, we set up Calibre to be compatible with our specific e-book gadget. We could choose devices from a list of 15 different manufacturers, including Amazon, Apple, and Barnes & Noble, as well as generic devices such as smartphones and tablets. The setup finished with links to demo videos and an online User Manual. Better yet, Calibre's main interface opens with one free e-book already displayed: "The Calibre Quick-Start Guide." A colorful interface with a familiar layout makes for easy navigation, aided and abetted by icons with easy-to-grasp labels such as Get Books and Fetch News, each with equally clear submenus.

We've got nothing but good things to say about Calibre, whether it's the 32- or 64-bit version. Adding, converting, and removing books, editing metadata, and even sharing our favorite titles all proved to be as easy as a few clicks. If you don't have a favorite e-book reader and library app yet, or even if you do, check out Calibre.

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User Reviews

Results 1–6 of 6

5 stars

"It even has its Calibre Connect"

September 06, 2015  |  By Jonatant77

2015-09-06 19:16:30  |  By Jonatant77

 |  Version: Calibre (64-bit) 2.37.1


Great for power users, try the down arrows for the functions in the main icons. Sort, search or view by a title or an author, cover and grid. A bevy of preferences and has programmable expressions, it even guides you to a mini-course.


Maybe too many options for new users. It might get complicated for them. But for power users no problem. Besides having duplicate find and get rid of duplicates automatically when you add ebooks to your calibre it doesn't have a way to find them later. Should get a regular menu interface also for those accustomed to Alt+F or Alt+H for help (to check the version) and upgrades even though they show up in the bottom right.


As far as I've seen its very complete, with many sorts of ebook file extensions. Many functions and subfunctions options. Very programmable and its open source

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1 stars

"Freezes my Windows 8 64 PC. Have to force shut down."

July 26, 2015  |  By rawslaw

2015-07-26 01:13:44  |  By rawslaw

 |  Version: Calibre (64-bit) 2.33


none none none


All versions I've tried freeze my PC, forcing a hard shut down.

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1 stars

"Will not let you organize your books."

July 25, 2014  |  By RM_Hanion

2014-07-25 11:52:30  |  By RM_Hanion

 |  Version: Calibre (64-bit) 1.46


It will open epub files.


I wanted an epub reader that would let me add folders for each author and series so that I could keep all of my books organized for easy reference. However this program not only doesn't allow this but also crams all of the files together and frequently changes the metadata on them so that they aren't even organized in the sidebar options panel correctly.

This wouldn't be such a big deal if I only had five eBooks instead of over a hundred, as it is, the awful interface and horrible programming they have implemented "to sort your books FOR you" doesn't do its job.


If you're looking for a good epub reader, keep looking. This program is not worth the time.

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5 stars

"Greatest freeware program on the web!"

April 14, 2013  |  By go_dawgs_go

2013-04-14 20:23:57  |  By go_dawgs_go

 |  Version: Calibre (64-bit) 0.9.25


*Manage multiple devices
*Convert most eBook formats
*Sort by many different criteria
*User-definable fields
*Loads metadata and pictures easily
*Speedy load and use of program


None. Updates are frequent and fix most minor bug issues.


I consider this to be one of the best freeware programs on the web. It is worth a donation to the author because of all the features and how well it works. I manage over 1500 books on four different devices without a hitch.

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5 stars

"The Best e-book manager and more"

March 27, 2013  |  By Imogen7Ryan

2013-03-27 23:03:37  |  By Imogen7Ryan

 |  Version: Calibre (64-bit) 0.9.24


Fantastic it is available for 64bit machines. Loading my ebooks into Calibre was fast and easy. It's great to get my favourite daily newspapers in Calibre as well. There are links to dozens of ebook sellers free and paid for. It reads epubs well. Haven't tried the conversion yet, but I am sure that too will be simple. Very, very happy with it.


I had to go to Calibres own website to download it. Because on all versions through cnet I kept getting an error message stating the Installation package could not be opened and to verify with the vendor this is a valid installer.


Calibre is a versatile ebook manager which is easy to operate without even having to look in the user manual. It can fetch daily newspaers which is a bonus. It can read dozens of file formats and overall it is worthy of the #2 spot.

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5 stars

"Slightly faster on Windows 7 64 bit."

December 14, 2012  |  By khhill

2012-12-14 15:41:06  |  By khhill

 |  Version: Calibre (64-bit) 0.9.10


Excellent speedup. Functions exactly like the 32 bit version.


Not applicable. Functions exactly like the 32 bit version.

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Results 1–6 of 6

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Full Specifications

What's new in version 2.70

New Features

  • Edit Book: Add a tool to download external resources (images/stylesheets/etc.) that are not included in the book.
  • Make custom columns available in the Alter Tag Browser->Manage categories sub menu

Bug Fixes

  • Conversion: Fix incorrect resolution of references to resources in HTML files that exist in a folder level above the OPF file. This could lead to styles being incorrectly processed in such HTML files.
  • Get Books: Update the amazon store plugins for website changes
  • Update metadata download plugin to fix searching for books by ISBN
  • Edit Book: Fix a regression in the previous release that broke the preferences dialog for changing color schemes.
  • Edit Book: Better error message when user tries to open a Check Book item that refers to a file that has been deleted since the last time Check Book was run.

New news sources

  • Various Danish news sources by Allan Simonsen

Improved news sources

  • Wired
  • Ambito
  • InfoWorld
  • Instapaper
  • San Jose Mercury News
  • South China Morning Post
  • Journal Gazette
  • JPost
  • Las Vegas Review
  • Marietta Daily Journal
  • DziennikBaltycki
  • biweekly
  • dwutygodnik
  • GRY Online
  • ESO
  • TVN24
  • And many more, see commit logs for details
Publisher Kovid Goyal
Publisher web site
Release Date October 14, 2016
Date Added October 18, 2016
Version 2.70
Category Educational Software
Subcategory E-book Software
Operating Systems
Operating Systems Windows Vista/7/8/7 64-bit/10/8 64-bit/Vista 64-bit
Additional Requirements None
Download Information
File Size 65.81MB
File Name calibre-64bit-2.70.0.msi
Total Downloads 68,040
Downloads Last Week 158
License Model Free
Limitations Not available
Price Free

Previous Versions:

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