{"id":2401,"date":"2026-06-01T17:08:43","date_gmt":"2026-06-01T17:08:43","guid":{"rendered":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/?p=2401"},"modified":"2026-06-01T17:11:54","modified_gmt":"2026-06-01T17:11:54","slug":"what-is-an-isbn-11-facts-for-self-publishing-authors","status":"publish","type":"post","link":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/","title":{"rendered":"What Is An ISBN? 11 Facts For Self-Publishing Authors"},"content":{"rendered":"<h1><b>What Is An ISBN? 11 Facts For Self-Publishing Authors<\/b><b>\u00a0<\/b><\/h1>\n<p><span style=\"font-weight: 400;\">Once you are set to publish your book, the ISBN will be the first term you come across. It stands for International Standard Book Number, a 13-character code that becomes your book&#8217;s identification number in the world of publishing.<\/span><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">As you release any form of your book\u2014paperback, hardcover, or even eBook\u2014the knowledge of an ISBN becomes mandatory. Most <a href=\"https:\/\/www.kdpdigitalpublishers.com\/book-publishing\/\">self-publishing<\/a> authors who release their books for the first time are confused about ISBNs, but once you understand them, things get easy.<\/span><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">If you want assistance in publishing your book as soon as possible, then you should consider our services at Kinetic Digital Publishers, where we take care of everything, including registration of the ISBN.<\/span><b>\u00a0<\/b><\/p>\n<h2><b>In this article, you will learn:<\/b><b>\u00a0<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">What an ISBN actually is<\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Who needs an ISBN<\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Whether different formats need separate ISBNs<\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">If you can recycle or reuse an ISBN<\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">How ISBNs are issued and assigned<\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Who ISBNs are issued to<\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">The disadvantages of publishing without an ISBN<\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.kdpdigitalpublishers.com\/blogs\/how-to-get-an-isbn-quick-guide-for-self-published-authors\/\">How to get an ISBN for your book<\/a><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Whether your eBook needs an ISBN<\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">The difference between ISBNs and barcodes<\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">What every digit in an ISBN actually means<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ol>\n<li><strong>What Is an ISBN? The Full Meaning Explained<\/strong><b><\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">ISBN stands for International Standard Book Number. The number serves as an international identifier for every edition and variant of a book that has been published worldwide. Just like fingerprints, no two books have identical ISBNs.<\/span><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Today&#8217;s ISBN consists of 13 digits, which are split into five segments using hyphens. Previously, ISBNs had only 10 digits. Once the International ISBN Agency ran out of digits, they added a prefix consisting of three digits (978 or 979) at the beginning of the sequence. As a result, today&#8217;s standard includes 13 digits.<\/span><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Interesting Fact: An ISBN doesn&#8217;t provide you with copyright protection. The processes of registering copyrights and ISBN numbers are completely different. The former registers your book; the latter protects its contents.<\/span><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">By including an ISBN on all your books&#8217; copies, you make it easier for distributors, booksellers, libraries, and Internet sellers to identify your book without any problems. This way, if someone wants to buy a certain edition of your book, they will not be able to purchase an incorrect version by mistake.<\/span><b>\u00a0<\/b><\/p>\n<ol start=\"2\">\n<li><b> Who Needs an ISBN?<\/b><b><\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Any publisher, including the self-publisher, that releases their book in print form requires an ISBN. An ISBN is crucial for ensuring that your book gets into catalogs, database listings, and even online book shops.<\/span><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Do all books have an ISBN? Not all books require an ISBN. All printed books need an ISBN, but eBooks and audiobooks that can be downloaded are not always required to have an ISBN.<\/span><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">If you plan on distributing your book using the digital format, you do not require an ISBN for distribution on these key websites:<\/span><b>\u00a0<\/b><\/p>\n<ul>\n<li><a href=\"https:\/\/kindlepreneur.com\/kdp-select-or-not-is-kindle-unlimited-worth-it\/\"><span style=\"font-weight: 400;\">Amazon Kindle<\/span><\/a><b><\/b><\/li>\n<li><span style=\"font-weight: 400;\">Barnes &amp; Noble Nook Press<\/span><b><\/b><\/li>\n<li><span style=\"font-weight: 400;\">Apple iBooks<\/span><b><\/b><\/li>\n<li><a href=\"https:\/\/kobo.com\/\"><span style=\"font-weight: 400;\">Kobo<\/span><\/a><b><\/b><\/li>\n<li><span style=\"font-weight: 400;\">Google Play Books<\/span><b><\/b><\/li>\n<li><span style=\"font-weight: 400;\">Smashwords\/Draft2Digital<\/span><b><\/b><\/li>\n<\/ul>\n<p><b>Should Self-Published Authors Buy Their Own ISBN?<\/b><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">This is perhaps one of the most contentious issues when it comes to self-publishing. The truth of the matter is: It all depends on your self-publishing objectives.<\/span><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">If you choose print-on-demand sites like Amazon KDP, then they will provide you with a free ISBN; however, they will publish your book with their name or the name of &#8220;Independently Published.&#8221; But if you get yourself an ISBN directly through the ISBN agency in your country, then your name will appear as the publisher.<\/span><b>\u00a0<\/b><\/p>\n<p><b>Reasons NOT to Purchase an ISBN<\/b><b>\u00a0<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You want to minimize upfront costs<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You mainly sell books online (Amazon, eBook platforms)<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You&#8217;re publishing for a niche audience or personal project<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Platform-assigned ISBNs cover your distribution needs<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<p><b>Reasons TO Purchase an ISBN<\/b><b>\u00a0<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You want to build your own publishing brand or imprint<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You plan to distribute to physical bookstores and libraries<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You want to appear as a professional independent publisher<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You want full control over metadata across all platforms<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Key point to remember: Some indie bookstores and libraries may be hesitant to sell or order books bearing the publishing imprint of Amazon. Should you decide to distribute your book physically, having an ISBN number will definitely help you out a lot.<\/span><b>\u00a0<\/b><\/p>\n<ol start=\"3\">\n<li><b> Do Different Publishing Formats Require Separate ISBNs?<\/b><b><\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Indeed, every format of your book needs a different ISBN.<\/span><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The following is a list of instances in which an ISBN is mandatory:<\/span><b>\u00a0<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Paperback version \u2192 requires a unique ISBN<\/span><b>\u00a0<\/b><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Hardcover version \u2192 requires a unique ISBN<\/span><b>\u00a0<\/b><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">eBook version \u2192 requires a unique ISBN (though optional)<\/span><b>\u00a0<\/b><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Audiobook version \u2192 requires a unique ISBN (if distributed outside of major platforms)<\/span><b>\u00a0<\/b><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Revised \/ Second Editions \u2192 require new ISBNs for each respective edition<\/span><b>\u00a0<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Note: If you are reprinting a hardcover version of a book without making any changes to the book at all, you do not have to get a new ISBN. However, any change you make to the book will require a new ISBN number.<\/span><b>\u00a0<\/b><\/p>\n<ol start=\"4\">\n<li><b> Can You Recycle or Reuse an ISBN?<\/b><b><\/b><\/li>\n<li><span style=\"font-weight: 400;\"> It\u2019s impossible to recycle or reuse the ISBN. Once it is assigned to a certain book edition, then it stays there forever, regardless of whether your book remains in print or not.<\/span><b><\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">If you decide to make changes to your book and produce another edition of it, you will have to apply for a totally new ISBN. This requirement is needed to guarantee the accuracy of the global books identification system.<\/span><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">That\u2019s why buying an ISBN pack is always a good idea. The price per single ISBN becomes lower when you buy more of them; for example, it will cost much less to buy a 100-ISBN package than to acquire each ISBN separately.<\/span><b>\u00a0<\/b><\/p>\n<ol start=\"5\">\n<li><b> How Are ISBNs Issued and Assigned?<\/b><b><\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">ISBNs are distributed by the ISBN national agency of each individual country. The international ISBN agency is responsible for managing the worldwide system.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The following is a list of key countries:<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">USA &amp; Australia: R.R. Bowker (myidentifiers.com)<\/span><\/li>\n<li><span style=\"font-weight: 400;\">United Kingdom &amp; Ireland: Nielsen Book Services<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Canada: Library and Archives Canada (free for Canadian publishers)<\/span><\/li>\n<li><span style=\"font-weight: 400;\">South Africa: National Library of South Africa<\/span><\/li>\n<li><span style=\"font-weight: 400;\">India: Raja Rammohun Roy National Agency for ISBN<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">There are some countries that give ISBNs to publishers for free; Canada is one such country. Publishers of the USA, on the other hand, have to buy their ISBNs from Bowker.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<ol start=\"6\">\n<li><b> To Whom Are ISBNs Issued?<\/b><b><\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">In a technical sense, ISBN numbers are given to publishers. However, since you are a self-publisher, you yourself become the publisher; thus, you will be able to obtain the ISBN number in your own name or under your publishing house.<\/span><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">If you get a free ISBN from one of the print-on-demand websites, such as Amazon&#8217;s KDP, then the print-on-demand website or the term Independently Published will appear as the publisher in the database of the book that you published. Note that this in no way affects your royalties or copyrights, although your publishing professionalism may be questioned.<\/span><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Pro tip from KDP: In case you want to create an author&#8217;s brand, then we recommend creating your own publishing house name and buying ISBN numbers under it. It only costs a few dollars, and it shows your professionalism and commitment. We can help you do this at our company.<\/span><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Now, what about the ISBNs for magazines? In this case, you need to know that there are other numbers for serially produced publications. These numbers are called the ISSN (International Standard Serial Number).<\/span><b>\u00a0<\/b><\/p>\n<ol start=\"7\">\n<li><b> Disadvantages of Publishing Without an ISBN<\/b><b><\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">While publishing a digital book without an ISBN is technically possible on most major platforms, there are real drawbacks to consider:<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Reduced discoverability:<\/b><span style=\"font-weight: 400;\">\u202fBooks without ISBNs are harder to find in library catalogs, book databases like Books in Print, and academic directories.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Limited distribution options:<\/b><span style=\"font-weight: 400;\">\u202fSome distributors and retailers require an ISBN to accept your title. Without one, your reach is narrowed.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Harder sales tracking:<\/b><span style=\"font-weight: 400;\">\u202fISBNs enable cross-platform sales tracking. Without one, monitoring how your book performs across different channels becomes difficult.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Perceived lack of professionalism:<\/b><span style=\"font-weight: 400;\">\u202fA book without an ISBN may raise red flags with bookstores, reviewers, and media outlets.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Exclusion from print editions:<\/b><span style=\"font-weight: 400;\">\u202fIf you want a physical version of your book, you will need an ISBN \u2014 there is no workaround for print distribution.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ol start=\"8\">\n<li><b> How Do You Get an ISBN?<\/b><b><\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Getting an ISBN is fairly simple. Below is how it is done for US-based authors:<\/span><b>\u00a0<\/b><\/p>\n<ol>\n<li><span style=\"font-weight: 400;\"> Go to myidentifiers.com (the official ISBN site of R.R. Bowker)<\/span><b><\/b><\/li>\n<li><span style=\"font-weight: 400;\"> Register a free account as a publisher<\/span><b><\/b><\/li>\n<li><span style=\"font-weight: 400;\"> Buy either one ISBN ($125) or ten ISBNs ($295); the latter provides more savings<\/span><b><\/b><\/li>\n<li><span style=\"font-weight: 400;\"> Provide information about your book (title, author, format, et al.)<\/span><b><\/b><\/li>\n<li><span style=\"font-weight: 400;\"> Receive your ISBN immediately through email<\/span><b><\/b><\/li>\n<li><span style=\"font-weight: 400;\"> Submit your title to the Books in Print Database<\/span><b><\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Tip for budget-conscious authors: Unless you plan to produce only one book in one format (i.e., only one eBook), then the best choice will be buying the pack of 10, which amounts to just $29.50 per ISBN \u2014 rather than buying each ISBN for $125 each!<\/span><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">For authors who do not reside in the United States, it would be best to contact their country&#8217;s ISBN agency since many countries provide ISBNs for free or at a lower rate.<\/span><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Another option is using services provided by a full-scale book publisher, such as Kinetic Digital Publishers, where we take care of everything, including the registration of your ISBN.<\/span><b>\u00a0<\/b><\/p>\n<ol start=\"9\">\n<li><b> Does My eBook Need an ISBN?<\/b><b><\/b><\/li>\n<\/ol>\n<p><b>Not necessarily \u2014 but it depends on your distribution strategy.<\/b><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Almost all of the major eBook platforms do not require an ISBN to publish your work. Amazon Kindle, Apple Books, Google Play, Kobo, and Barnes &amp; Noble can publish your eBook without having an ISBN. Each platform has its own identification system to identify your eBook, such as Amazon\u2019s ASIN.<\/span><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Some of the reasons why you should obtain an ISBN for your eBook are:<\/span><b>\u00a0<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Your eBook should be listed in the library catalog and OverDrive, the leading library eBook platform.<\/span><b>\u00a0<\/b><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If you are using any aggregator to distribute your eBooks widely, you need an ISBN.<\/span><b>\u00a0<\/b><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You want to keep track of metadata for all platforms.<\/span><b>\u00a0<\/b><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You are planning to submit your book to award nominations.<\/span><b>\u00a0<\/b><\/li>\n<\/ul>\n<ol start=\"10\">\n<li><b> ISBNs vs. Barcodes \u2014 What&#8217;s the Difference?<\/b><b><\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Authors frequently confuse ISBNs with barcodes, but they serve different purposes \u2014 even though they are closely related.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><b>ISBN<\/b><b>\u00a0<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A 13-digit number that identifies your book<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Appears on the copyright page inside the book<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Used in databases, catalogs, and distribution systems<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Required for distribution<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<p><b>Barcode<\/b><b>\u00a0<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A scannable visual representation of that number<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Appears on the back cover of the book<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Used by retailers to scan and process sales at the point of purchase<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Required for physical retail sales<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">A standard book barcode (EAN-13 format) encodes the 13-digit ISBN. It may also include a 5-digit &#8220;add-on&#8221; barcode that encodes the book&#8217;s retail price. If you&#8217;re formatting your own book, you&#8217;ll need to generate a barcode separately \u2014 the ISBN alone is not a barcode.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">You can generate a free ISBN barcode using\u202f<\/span><a href=\"https:\/\/www.kdpdigitalpublishers.com\/isbn-bar-code-generator\/\"><span style=\"font-weight: 400;\">Kinetic Digital Publishers&#8217; free ISBN Barcode Generator tool<\/span><\/a><span style=\"font-weight: 400;\">\u202f\u2014 no account required.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<ol start=\"11\">\n<li><b> The Meaning of Each Part of an ISBN Number<\/b><b><\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Each and every ISBN number is a story of the book that it stands for. There are five sections of the 13-digit ISBN, and each holds information as follows:<\/span><b>\u00a0<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>EAN Prefix (978 or 979):<\/b><span style=\"font-weight: 400;\"> The first three digits in the series are the EAN (European Article Number). All current ISBNs start with either 978 or 979. The 979 EAN was adopted when the 978 pool started to get too crowded.<\/span><b>\u00a0<\/b><\/li>\n<\/ol>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Registration Group Identifier (1 to 5 digits):<\/b><span style=\"font-weight: 400;\"> Registration Group Identifier refers to a particular country, geographic territory, or language community within which the publisher is located. In English Language Publishers, identifiers are &#8220;0&#8221; and &#8220;1&#8221;.<\/span><b>\u00a0<\/b><\/li>\n<\/ol>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Registrant Element (variable length):<\/b><span style=\"font-weight: 400;\"> This section is the identification of the specific publisher, self-publisher, or author who is responsible for the publishing process. Publishers who have a large number of books use shorter Registrant Elements because they require space in the Publication Element.<\/span><b>\u00a0<\/b><\/li>\n<\/ol>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Publication Element (variable length):<\/b><span style=\"font-weight: 400;\"> This part is the identification of the specific publication. Different versions of the same book are assigned different publication elements.<\/span><b>\u00a0<\/b><\/li>\n<\/ol>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Check Digit (1 digit):<\/b><span style=\"font-weight: 400;\"> The last digit is the check digit, which is a mathematically calculated value based on the first 12<\/span><b>\u00a0<\/b><\/li>\n<\/ol>\n<p><b>The Final Word<\/b><b>\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">ISBNs may seem daunting initially, but they simply serve as a straightforward identifier for your book. Some things to remember include securing a different ISBN for each format in which you will be publishing your book, possibly buying your own if you wish to see your book in bookstores and libraries, and NEVER trying to use the same ISBN twice!<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you have decided to move forward and have your book published with professional assistance, including ISBN registration, cover creation, and marketing, please allow us at Kinetic Digital Publishers to assist you.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Is An ISBN? 11 Facts For Self-Publishing Authors\u00a0 Once you are set to publish your book, the ISBN will be the first term you come across. It stands for International Standard Book Number, a 13-character code that becomes your book&#8217;s identification number in the world of publishing.\u00a0 As you release any form of your [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":2402,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[11,7],"tags":[749],"class_list":["post-2401","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-book-marketing","category-publishing","tag-what-is-an-isbn"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Is An ISBN? 11 Facts For Self-Publishing Authors<\/title>\n<meta name=\"description\" content=\"It stands for International Standard Book Number, a 13-character code that becomes your book&#039;s identification number in the world of publishing.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is An ISBN? 11 Facts For Self-Publishing Authors\" \/>\n<meta property=\"og:description\" content=\"It stands for International Standard Book Number, a 13-character code that becomes your book&#039;s identification number in the world of publishing.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/\" \/>\n<meta property=\"og:site_name\" content=\"Kinetic Digital Publishers\u2014Your Story, Amplified!\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-01T17:08:43+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-01T17:11:54+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-content\/uploads\/2026\/06\/What-Is-An-ISBN.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"700\" \/>\n\t<meta property=\"og:image:height\" content=\"370\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"seo-team\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"seo-team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"10 minutes\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"What Is An ISBN? 11 Facts For Self-Publishing Authors","description":"It stands for International Standard Book Number, a 13-character code that becomes your book's identification number in the world of publishing.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/","og_locale":"en_US","og_type":"article","og_title":"What Is An ISBN? 11 Facts For Self-Publishing Authors","og_description":"It stands for International Standard Book Number, a 13-character code that becomes your book's identification number in the world of publishing.","og_url":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/","og_site_name":"Kinetic Digital Publishers\u2014Your Story, Amplified!","article_published_time":"2026-06-01T17:08:43+00:00","article_modified_time":"2026-06-01T17:11:54+00:00","og_image":[{"width":700,"height":370,"url":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-content\/uploads\/2026\/06\/What-Is-An-ISBN.jpg","type":"image\/jpeg"}],"author":"seo-team","twitter_card":"summary_large_image","twitter_misc":{"Written by":"seo-team","Est. reading time":"10 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/#article","isPartOf":{"@id":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/"},"author":{"name":"seo-team","@id":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/#\/schema\/person\/3b0db8d21ae879e2c59466fb8d95542b"},"headline":"What Is An ISBN? 11 Facts For Self-Publishing Authors","datePublished":"2026-06-01T17:08:43+00:00","dateModified":"2026-06-01T17:11:54+00:00","mainEntityOfPage":{"@id":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/"},"wordCount":2118,"image":{"@id":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/#primaryimage"},"thumbnailUrl":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-content\/uploads\/2026\/06\/What-Is-An-ISBN.jpg","keywords":["What Is An ISBN"],"articleSection":["Book Marketing","Publishing"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/","url":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/","name":"What Is An ISBN? 11 Facts For Self-Publishing Authors","isPartOf":{"@id":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/#primaryimage"},"image":{"@id":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/#primaryimage"},"thumbnailUrl":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-content\/uploads\/2026\/06\/What-Is-An-ISBN.jpg","datePublished":"2026-06-01T17:08:43+00:00","dateModified":"2026-06-01T17:11:54+00:00","author":{"@id":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/#\/schema\/person\/3b0db8d21ae879e2c59466fb8d95542b"},"description":"It stands for International Standard Book Number, a 13-character code that becomes your book's identification number in the world of publishing.","breadcrumb":{"@id":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/#primaryimage","url":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-content\/uploads\/2026\/06\/What-Is-An-ISBN.jpg","contentUrl":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-content\/uploads\/2026\/06\/What-Is-An-ISBN.jpg","width":700,"height":370},{"@type":"BreadcrumbList","@id":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/what-is-an-isbn-11-facts-for-self-publishing-authors\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/"},{"@type":"ListItem","position":2,"name":"What Is An ISBN? 11 Facts For Self-Publishing Authors"}]},{"@type":"WebSite","@id":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/#website","url":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/","name":"Kinetic Digital Publishers\u2014Your Story, Amplified!","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/#\/schema\/person\/3b0db8d21ae879e2c59466fb8d95542b","name":"seo-team","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/4c1fa3c78ee05ce20c26e26275d6eb52fef6d5d1d928f530e6899a86e7ed1611?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/4c1fa3c78ee05ce20c26e26275d6eb52fef6d5d1d928f530e6899a86e7ed1611?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/4c1fa3c78ee05ce20c26e26275d6eb52fef6d5d1d928f530e6899a86e7ed1611?s=96&d=mm&r=g","caption":"seo-team"},"url":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/author\/seo-team\/"}]}},"_links":{"self":[{"href":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-json\/wp\/v2\/posts\/2401","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-json\/wp\/v2\/comments?post=2401"}],"version-history":[{"count":3,"href":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-json\/wp\/v2\/posts\/2401\/revisions"}],"predecessor-version":[{"id":2405,"href":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-json\/wp\/v2\/posts\/2401\/revisions\/2405"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-json\/wp\/v2\/media\/2402"}],"wp:attachment":[{"href":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-json\/wp\/v2\/media?parent=2401"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-json\/wp\/v2\/categories?post=2401"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kdpdigitalpublishers.com\/blogs\/wp-json\/wp\/v2\/tags?post=2401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}