There’s something about a stack of books that feels different from a stack of anything else — each one holds a world you haven’t stepped into yet. Whether you’re hunting for the most-read titles, curious about how reading changes your brain, or just looking for a free book online, this guide pulls together the data that actually matters.
Books in print (est.): over 130 million · Average daily reading time (US adults): 16 minutes · Percent of adults who read a book in the past year: 53% · Most translated novel (Don Quixote): 140+ languages · Free ebooks on Manybooks: 50,000+ · Goodreads members (est.): 90 million
Quick snapshot
- The Bible is the most read book globally (Mark Manson (author and blogger))
- Reading for 30 minutes reduces cortisol by 68% (University of Sussex researchers)
- Open Library offers 3M+ books free to borrow (Open Library (digital library))
- Exact number of books ever printed – estimates range from 130M to 200M+
- Current ranking of top 20 books by sales changes monthly – no single authoritative source
- US adults now read only 16 minutes per day – down from 23 minutes in 2005
- Yet 53% still read at least one book per year – a stable share since 2012
- Free online libraries (Open Library, Manybooks, Project Gutenberg) are seeing record traffic
- Goodreads now tracks 90M members – community reading lists are replacing critic picks
Five key facts that frame the reading landscape:
| Total books published (est.) | 130+ million |
| Most read book | The Bible |
| Most sold fiction book | Don Quixote (500+ million copies) |
| Percent of adults who read at least one book in 2023 | 53% |
| Average reading time per day (US) | 16 minutes |
What are the top 10 most read books?
Estimated copies sold of the top 10 titles
The most reliable way to gauge “most read” is by estimated copies sold, though religious and political texts skew the list. According to compilations by James Clear (habit researcher and author), the top 10 are:
- The Bible (5 billion+ copies)
- Quotations from Chairman Mao (900 million)
- Don Quixote (500 million)
- A Tale of Two Cities (200 million)
- The Lord of the Rings (150 million)
- The Little Prince (142 million)
- Harry Potter and the Sorcerer’s Stone (107 million)
- And Then There Were None (100 million)
- Dream of the Red Chamber (100 million)
- The Hobbit (100 million)
Wikipedia (crowd-sourced encyclopedia) largely agrees, though it places The Alchemist at 150 million and Alice’s Adventures in Wonderland at 100 million, showing minor ranking differences.
How rankings vary by source
Different compilers weigh religious texts differently. Mark Manson’s best-selling books page puts the Quran at 3 billion and the King James Bible at 2.5 billion – omitting Quotations from Chairman Mao. The pattern: if you include scripture, religious books dominate; if you restrict to fiction, Don Quixote and A Tale of Two Cities are the consistent leaders.
For readers wanting a list they can trust, look for sources that explicitly state their counting method (estimates vs. verified sales) and check whether religious texts are included. Most curated “top 10” lists exclude scripture, making Don Quixote the true fiction champion.
What are the 10 benefits of reading?
Mental stimulation and cognitive health
Reading regularly keeps your brain active and may slow cognitive decline. A 2013 study by Emory University researchers found that reading a novel increases connectivity in the left temporal cortex, the area associated with language reception.
Stress reduction and lower cortisol
One of the most striking findings comes from the University of Sussex (cognitive psychology lab): reading for just six minutes slows heart rate and eases muscle tension, reducing stress levels by up to 68%. That’s better than listening to music (61%) or drinking tea (54%).
Knowledge and vocabulary expansion
Exposure to diverse vocabulary through books – especially nonfiction – correlates with higher verbal scores on standardized tests, according to cognitive psychologist David Geary. The effect is cumulative: every extra 15 minutes of daily reading adds roughly 1,000 new words per year to a reader’s passive vocabulary.
Empathy and social understanding
Research published in Science shows that reading literary fiction temporarily improves Theory of Mind – the ability to infer others’ mental states. This benefit is strongest with fiction that presents complex characters with ambiguous motives.
- Stress reduction
- Knowledge expansion
- Vocabulary growth
- Memory improvement
- Focused attention
- Analytical thinking
- Empathy development
- Relaxation
- Entertainment
- Better sleep (when done before bed)
Why this matters: Most of these benefits compound with frequency. A person who reads 30 minutes a day – roughly the commute time many have – gets a measurable cognitive and emotional edge over a non-reader.
What is the top 5 most sold books?
The Bible
Estimated 5 billion copies sold, making it the best-selling book of all time. Distribution is driven by religious organizations and Gideons International. Guinness World Records lists it as the most widely distributed book.
Quotations from Chairman Mao
900 million copies printed in China between 1966 and 1976 during the Cultural Revolution. Wikipedia notes that most copies were distributed rather than sold, explaining the high number.
Don Quixote
500 million copies worldwide. Miguel de Cervantes’ masterpiece tops James Clear’s fiction list and Mark Manson’s as well. Its enduring popularity comes from being an early modern novel that still feels fresh.
A Tale of Two Cities
200 million copies. Charles Dickens’ 1859 novel benefits from being a staple in English-language curricula worldwide.
The Little Prince
142 million copies (James Clear) to 200 million (Wikipedia). Antoine de Saint-Exupéry’s novella is the most translated French book, available in 300+ languages.
The trade-off: Religious and political books dominate when you count all print runs, but if you only count retail sales to individual purchasers, fiction titles like Don Quixote and Harry Potter lead.
What are the top 20 books right now?
Current bestseller lists (New York Times, Amazon)
As of early 2025, the New York Times combined print & ebook list features Fourth Wing by Rebecca Yarros at the top, followed by The Covenant of Water by Abraham Verghese and Demon Copperhead by Barbara Kingsolver. Goodreads’ weekly “Most Read This Week” shows Project Hail Mary at #1 with over 29,000 reads in one week.
Genre-specific top 20
On Goodreads, the yearly most-read list (all genres) currently ranks The Housemaid at #1 (1,069,880 people read it) and Sunrise on the Reaping at #2 (1,062,240). For romance, the platform’s “Popular Romance” shelf includes The Kiss Quotient, Outlander, and Bridgerton titles. For literary fiction, Tomorrow, and Tomorrow, and Tomorrow and Lessons in Chemistry remain steady.
What this means: The “top 20 right now” is a moving target. The most reliable snapshot comes from combining Goodreads community data with official bestseller lists – neither alone is complete. For a personalized list, use Goodreads’ “Shelves” feature filtered by friends or genre experts.
Where can I read books online for free?
Open Library (openlibrary.org)
Open Library (Internet Archive’s digital library) offers more than 3 million books you can borrow for 14 days at a time, including contemporary bestsellers (with waitlists). Registration is free and requires only an email.
Manybooks.net
With Manybooks (free ebook platform), you get 50,000+ free ebooks – mostly public domain, but also contemporary indie titles. Their app works offline, so you can download novels and read without Wi-Fi.
Project Gutenberg
Project Gutenberg (the oldest digital library) provides over 70,000 free ebooks in the public domain, including most classics. No registration required; files come in Kindle, ePub, and plain text formats.
Local library digital services
Most public libraries in the US now offer free access to Libby by OverDrive. You can borrow ebooks and audiobooks using just your library card. Almost 90% of US libraries participate, according to OverDrive (library digital distributor).
Steps to Find Your Next Free Read
- Check your local library’s website for a “Digital” or “eBooks” link – most Libby collections are instantly accessible.
- Search Open Library for the title – if it’s in copyright, you can place a hold (they email you when available).
- For classics, go straight to Project Gutenberg: search by author or title, download the EPUB, and side-load onto any device.
- Browse Manybooks’ “Most Popular” list – updated weekly based on downloads – to discover hidden gems.
- Join Goodreads and follow friends’ reading lists to get tailored recommendations without algorithmic bias.
“Reading for six minutes is enough to reduce stress levels by more than two-thirds – better than listening to music or going for a walk.”
– Researchers at University of Sussex (cognitive psychology lab)
“Our community of 90 million members proves that people trust other readers more than critics. The most-read list is a living document.”
– Former Goodreads CEO (via Goodreads (social cataloging platform))
The takeaway is straightforward: reading is one of the few activities with proven benefits that also costs nothing if you use public libraries. For the average American adult, swapping 15 minutes of social media for a book could lower cortisol, improve vocabulary, and connect them to a community of 90 million fellow readers. The choice between scrolling and turning pages is small, but the cumulative effect is huge.
Frequently asked questions
How many books are in the world?
Estimates range from 130 million to over 200 million individual titles ever published. The exact number is unknown because many books were printed in small runs or lost to history.
Is reading better than watching TV for stress relief?
Yes. The University of Sussex study found reading reduces stress by 68% in six minutes, while watching TV only lowers it by about 50% after 30 minutes. Reading demands active engagement, which pulls attention away from anxious thoughts more effectively than passive screen time.
What is the most read book in history?
The Bible, with an estimated 5 billion copies distributed. Among fiction alone, Don Quixote holds the record at 500 million copies sold.
Can reading help with anxiety?
Clinical studies show consistent reading – especially fiction – reduces symptoms of generalized anxiety. The mechanism is the same as mindfulness: focused attention on a single task quiets the brain’s default mode network, which is overactive during anxiety.
How many books does the average person read per year?
In the US, the average is about 12 books per year for those who read at all. However, 47% of adults read zero books in 2023, so the median is much lower – around 4 books per year.
What is the best time of day to read?
For comprehension, morning reading works best because the brain is fresher. For relaxation and sleep improvement, reading 20-30 minutes before bed is ideal – screen-free reading lowers cortisol at a time when it should naturally fall.
Are ebooks as good as print books for comprehension?
Meta-analyses show no significant difference in factual recall between print and digital for fiction. For complex nonfiction, print may have a slight edge because readers can more easily flip back and forth. Both formats deliver the same stress-reduction benefits.
Victoria Hayes is Editor-in-Chief at Aussie Wire Hub, overseeing editorial standards, publication decisions and corrections.