Amazon KDP

How Many Books Are on Amazon?

The size of the Amazon Kindle Store catalog over time — from 88,000 ebooks at launch to an estimated 12 million today. · Updated Jan 15, 2026

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Kindle Store today

12M+

estimated, January 2026

Last official count

6M

Amazon disclosed, 2018

At Kindle launch

88K

November 2007

Kindle Store catalog growth, 2007 to today

Source: Kindle Store history (Wikipedia)

From 88K ebooks at the 2007 launch to 6M by 2018 (Amazon's last disclosed figure) to an estimated 12M today. Post-2018 points are third-party estimates, shown dashed.

Catalog size milestones

DateKindle Store titlesSource
November 200788KAmazon
December 2008275KAmazon
April 2010500KAmazon
September 2010700KAmazon
August 2011765KAmazon
July 20142.7MAmazon
March 20186MAmazon
September 202310.9MEstimate
January 202612MEstimate

How the Kindle Store catalog grew

When the Kindle launched in November 2007, the store had 88K ebooks. It crossed 1 million around 2011, hit 6M by 2018 — Amazon's last officially disclosed figure — and is estimated at roughly 12M today. That growth is almost entirely self-publishing: KDP turned the catalog from a curated set of publisher ebooks into the largest book catalog in the world, dominated by independent titles.

Why the recent numbers are estimates, not counts

Amazon used catalog milestones as marketing in the Kindle's early years, then stopped disclosing them after the 6-million mark around 2018. Every figure since is a third-party estimate built from category browsing and search-result counts, which are inherently fuzzy — duplicates, box sets, and inactive titles all muddy the count. We mark these points as estimates so the line is honest about where Amazon's disclosure ends and inference begins.

What the catalog size means for authors

A 12-million-title store is the backdrop to every self-publishing decision. It's why discoverability — categories, keywords, series read-through, and ads — matters more than the book existing at all. The catalog's scale is the reason a niche focus beats a broad one: ranking in a specific category against hundreds of competitors is achievable, while ranking 'in the Kindle Store' against millions is not.

Methodology

Amazon-disclosed milestones. Figures through the 6-million mark (around 2018) are Amazon's own Kindle Store catalog counts, published as marketing milestones at the time and compiled in the Kindle Store history record.

Post-2018 estimates. Amazon stopped disclosing the catalog size after 2018. Later points are third-party estimates from ebook-tracking sites and Google site-search counts. They are approximate — duplicates, box sets, and inactive titles inflate raw counts — and are labelled as estimates here, never presented as Amazon figures.

Kindle ebooks, not print. These figures count Kindle Store ebooks. Amazon's print catalog (paperbacks and hardcovers via KDP and traditional publishers) is a separate, less-measurable population not included here.

See also our author-earnings page for how income is distributed across this catalog.

How Many Books Are on Amazon FAQ

How many books are on Amazon?
Amazon's Kindle Store holds an estimated 12M ebooks as of January 2026. Amazon's last officially disclosed figure was 6M in 2018; everything after that is a third-party estimate, since Amazon stopped publishing the count. The print catalog (paperbacks and hardcovers) is separate and harder to size, but the Kindle ebook number is the one most people mean by "books on Amazon."
How many Kindle books are there?
Roughly 12M, estimated. The Kindle Store launched in November 2007 with 88K titles, passed 1 million around 2010, reached 6M by 2018 (Amazon's last official figure), and is estimated to have roughly doubled again since as self-publishing volume kept compounding.
Why doesn't Amazon publish the exact number of Kindle books?
Amazon disclosed Kindle Store catalog milestones for marketing in the early years but stopped after the 6 million figure around 2018. Since then the only public numbers are third-party estimates derived from category browsing and Google site-search counts, which are approximate. We label every post-2018 point on this page as an estimate rather than presenting it as an Amazon count.
How many of the books on Amazon are self-published?
The large majority of the Kindle Store's growth since 2010 has come from self-publishing through KDP. Amazon has never published a clean split, but independent analyses consistently find self-published titles make up most of the catalog by count (though a smaller share of total sales). See our author-earnings and self-publishing pages for what Amazon does and doesn't disclose.
Where does this catalog data come from?
Figures through 2018 are Amazon's own disclosed Kindle Store milestones. Points after 2018 are third-party estimates (ebook-tracking sites and Google site-search counts), marked as estimates throughout. We do not present estimates as official Amazon numbers.

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