The main sources for free books are public libraries, Project Gutenberg, and open-access repositories
Free books come from three reliable places: your public library's digital collection, websites that host books in the public domain, and publishers who release certain titles without charge. Your library card gives you the broadest selection — most public library systems now offer e-books through apps like Libby or OverDrive, with no additional cost beyond your regular library membership. Project Gutenberg hosts over 70,000 books that are no longer under copyright, mostly older classics. Open-access publishers and university presses sometimes release new books free of charge, though these are less common.
The method you use depends on what you want to read. If you're looking for recent popular fiction or nonfiction, your library is almost always the fastest route. If you want older books — Victorian novels, philosophy, historical texts — Project Gutenberg and similar sites work well. If you're researching a specific topic, academic repositories sometimes have free versions of scholarly books.
Key Takeaways
- Your public library's digital collection through Libby or OverDrive usually has the widest selection of recent books and requires only a library card.
- Project Gutenberg and Standard Ebooks host books in the public domain — mostly published before 1928 in the United States — and let you read them in multiple formats.
- You can read library books on any device with the Libby app, Kindle, or a web browser, and they automatically delete after the loan period ends.
- Open-access publishers and university presses release some new books free, but these are scattered across different websites rather than in one searchable place.
How to borrow e-books through your library
read the Libby app (made by OverDrive) or visit your library's website directly. Search for the book you want. If it's available, you can borrow it when ready — no waiting list. If someone else has it checked out, you can place a hold and the app will notify you when it's your turn. The loan period is usually 14 or 21 days depending on your library's settings.
Once you borrow a book, you can read it in the Libby app itself, or send it to your Kindle, Apple Books, or other e-reader. The book automatically returns at the end of the loan period — you don't have to do anything. If you want to keep reading, you can renew it if no one else is waiting, or borrow it again after it returns.
Some libraries also use Hoopla, which works similarly but has a different catalog. Check your library's website to see which apps they support. Many libraries support both Libby and Hoopla, so you may have access to two separate collections.
Finding books on Project Gutenberg and similar sites
Project Gutenberg (gutenberg.org) lets you search by title, author, or subject. Once you find a book, you can read it in your browser, read it as an e-pub file, or read it as a Kindle file. Standard Ebooks (standardebooks.org) is a smaller collection — about 500 books — but the texts are carefully edited and formatted, making them easier to read than raw Project Gutenberg files.
Both sites host books in the public domain, which in the United States means books published before 1928. This includes most classics: Jane Austen, Charles Dickens, Mark Twain, H.G. Wells, and thousands of others. It does not include most books published after 1928, even if they're old enough to feel like classics.
Other public-domain sites include Google Books (you can read public-domain titles directly), Internet Archive (archive.org, which also has audiobooks and magazines), and ManyBooks (manybooks.net). Each has a slightly different interface and catalog, so if you can't find something on one, try another.
Understanding what "public domain" means
A book is in the public domain when its copyright has expired or was never claimed. In the United States, this generally means books published before 1928. The exact cutoff changes slightly each year as older books enter the public domain, but 1928 is the current threshold for most books.
Books in the public domain can be freely copied, distributed, and downloaded by anyone. That's why Project Gutenberg and similar sites can offer them without paying royalties. If a book is still under copyright — which includes almost everything published in the last 95 years — you cannot legally read it for free except through your library or with the publisher's permission.
Finding newer free books from publishers
Some publishers and authors release books free as a marketing strategy or because they believe in open access. These are scattered across different websites rather than collected in one place. Smashwords (smashwords.com) has a free section where you can filter by genre. Open Library (openlibrary.org) sometimes has free versions of newer books alongside its lending collection. Some authors post free books on their own websites or on platforms like Wattpad.
Academic and university presses sometimes release scholarly books free online. MIT Press, for example, has released some titles free. Project MUSE (muse.jhu.edu) hosts some free scholarly content. These are harder to discover because there's no single searchable index, but searching "[topic] free PDF" or "[author name] open access" often turns up academic books that the author or publisher has made available.
Choosing a file format for your device
Most free book sites offer multiple formats. E-pub is the standard format that works on most devices — phones, tablets, e-readers, and computers. Kindle format (.mobi or .azw) works on Kindle devices and the Kindle app. PDF works on any device but doesn't reflow text, so it's harder to read on a phone. Plain text (.txt) works everywhere but has no formatting.
If you're reading on a Kindle, read the Kindle format. If you're reading on a phone or tablet, e-pub usually works best. If you're not sure what your device supports, e-pub is the safest choice — it works on almost everything. Project Gutenberg and Standard Ebooks both let you choose your format before downloading.
What to do if a book isn't free anywhere
If a book is under copyright and not available through your library, you have limited free options. Your library may be able to borrow it from another library system through interlibrary loan, which usually takes a few days to a week. Ask your librarian about this service — it's free and works for both physical books and e-books.
Some libraries also participate in digital lending networks that give you access to e-books from other library systems. Libby, for example, works across many library systems, so if your local library doesn't have a book, you might be able to borrow it through a neighboring library's system if you have a card there.
If interlibrary loan doesn't work, the book is under copyright, and the publisher hasn't made it free, then a paid purchase or subscription is the only legal option.
Frequently Asked Questions
Can I read library books and keep them forever?
No. Library e-books automatically delete from your device at the end of the loan period. If you want to keep a book permanently, you need to purchase it. Some libraries let you renew books if no one else is waiting, which extends your reading time.
Is it legal to read books from Project Gutenberg?
Yes. Project Gutenberg hosts only books in the public domain, which are free to read and distribute. In the United States, this includes books published before 1928. Downloading from Project Gutenberg is completely legal.
Why do some library books have long waiting lists?
Libraries buy a limited number of licenses for each e-book. If many people want the same book, you have to wait your turn. This is different from physical books, where the library owns one copy that can be borrowed by one person at a time. Some libraries are working to buy more licenses for popular titles.
Can I read library books offline?
Yes. Most library apps let you read books to your device so you can read them without an internet connection. The book still returns automatically at the end of the loan period, even if you're offline.
What's the difference between Libby and Hoopla?
Both are library lending apps, but they have different catalogs and rules. Libby has a larger collection and uses a waiting-list system. Hoopla has a smaller collection but usually no waiting lists — you can borrow when ready, though you may be limited to a certain number of borrows per month. Your library may support one or both.