The fastest way depends on what you're starting with
You can add books to Kindle in three main ways: buy them directly from Amazon, send your own files to your device, or borrow them from your library. Which route you take depends on whether you want new books, already own files you want to read, or prefer borrowing. Most people use a mix of all three.
Your Kindle works across devices — phone, tablet, e-reader, or computer — so a book you add on one shows up on the others automatically if you're signed into the same Amazon account. This means you don't have to choose between devices; you can start reading on your phone and pick up where you left off on your e-reader.
Key Takeaways
- Books you buy from Amazon arrive on all your Kindle devices instantly if they're connected to the internet and signed into your account.
- You can email your own document files (PDFs, Word documents, and others) directly to your Kindle using your device's unique email address, which Amazon provides in your account settings.
- Library borrowing through Libby or OverDrive sends books to your Kindle for a set loan period, usually two to three weeks.
- Kindle apps on phones and tablets download books over WiFi or mobile data, while e-readers need WiFi to receive new titles.
Buying books directly from Amazon
The simplest method is to buy books through Amazon's store. On your Kindle e-reader, open the Kindle Store from the home screen and search for the title you want. On a phone or tablet, open the Kindle app, tap the Store icon (usually at the bottom), and search there. When you find the book, select it and choose "Buy Now with 1-Click" or a similar button. The book downloads immediately if you're on WiFi or mobile data.
On a computer, go to Amazon.com, search for the book, and look for the "Buy Now with 1-Click" button. A window will ask which Kindle device or app you want to send it to — pick the one you're using, and it arrives within seconds. You don't need to plug anything in or manually transfer files; Amazon handles the delivery automatically.
If you have a Kindle Unlimited subscription, many books are included at no extra cost. Search for the title, and if it's in the program, you'll see a "Read for Free" button instead of a price. The book works the same way as a purchased one.
Sending your own files to your Kindle
If you already have a document — a PDF, a Word file, an ePub, or other formats — you can send it to your Kindle by email. First, find your Kindle's email address. On an e-reader, go to Settings (or Menu, depending on your model), then Device Info or About, and look for the email address listed there. On a phone or tablet app, open the app menu, tap Settings, then Account Settings, and find "Send-to-Kindle Email" listed there.
Once you have the address, compose an email to it with your document attached. The subject line doesn't matter, but the email must come from an address you've registered with your Amazon account. You can add multiple addresses in your account settings under "Approved Personal Document E-mail List" so family members can send you files too. Within minutes, the document appears on your Kindle as if you'd bought it.
Not all file types convert perfectly. PDFs usually arrive looking exactly as they were, but Word documents and ePubs are reformatted to fit your Kindle's screen, which can sometimes shift images or break formatting. If the conversion doesn't look right, try converting the file to a different format before sending it — free tools like Calibre can do this.
Borrowing books from your library
Most public libraries in the United States let you borrow e-books directly to your Kindle through apps like Libby (owned by OverDrive) or the library's own app. Download Libby on your phone or tablet, sign in with your library card number, and search for the book you want. When you find it, tap "Borrow," and Libby asks which app to send it to — select Kindle. The book appears in your Kindle library within a few seconds.
Borrowed books have a due date, usually two to three weeks. When the loan expires, the book automatically disappears from your device — you don't have to return it manually. If you want to keep reading, you can place a hold and borrow it again when it becomes available, or buy it if you decide you want to own it.
Not every library offers Kindle borrowing through Libby, though most do. If yours doesn't, check your library's website for other e-book options. Some libraries have their own lending apps or partnerships with other services. Your library card is the only thing you need; there's no separate sign-up.
Organizing and managing your library
As you add books, they appear in your Kindle library — the list of all titles on your account. On an e-reader, swipe to the Library tab from the home screen. On an app, tap the Library icon (usually at the bottom). Books are listed by most recent first, but you can sort by title, author, or date added using the menu options.
You can create collections to organize books by genre, series, or any category you choose. On an e-reader, highlight a book title, open the menu, and select "Add to Collection," then create a new one or pick an existing one. On an app, swipe left on a book title and tap "Add to Collection." Collections make it easier to find what you're looking for when your library grows.
If you want to remove a book from your device but keep it in your library (so you can re-download it later), highlight the title and select "Remove from Device." The book stays in your account on Amazon's servers. If you want to delete it completely from your library, select "Delete" instead — you can always buy or borrow it again later.
Troubleshooting when books don't arrive
If a book you bought doesn't show up, first check that your device is connected to WiFi or mobile data and signed into the correct Amazon account. On an e-reader, go to Settings and look for the account email listed there. On an app, open the menu and check Account Settings. If the account is wrong, sign out and sign back in with the correct one.
If the book still doesn't appear after a few minutes, try restarting your device. On an e-reader, hold the power button for 20 seconds until the screen goes black, then press it again. On an app, close it completely and reopen it. After restart, go to your library and tap the download icon next to the book title to manually start the download.
For files you've emailed, make sure the email came from an address registered with your Amazon account. Check your "Approved Personal Document E-mail List" in Account Settings to confirm. If the address isn't there, add it and try sending the file again. Also check that the file format is one Kindle accepts — PDFs, DOCs, DOCX, and ePub files work; some others may not.
Frequently Asked Questions
Can I add books to Kindle without WiFi?
Kindle apps on phones and tablets can download books over mobile data, so you don't need WiFi. E-readers require WiFi to receive new books. Once a book is downloaded, you can read it offline on any device.
What happens if I send a file to the wrong Kindle email address?
The file won't arrive. Make sure you're sending to the exact email address Amazon assigned to your device. If you've already sent it to the wrong address, there's no way to retrieve it — you'll need to send it again to the correct one.
Can I share a book I bought with someone else on their Kindle?
Not directly. Each Kindle account is separate. If someone else wants the book, they need to buy it themselves or borrow it from the library. You can't transfer purchased books between accounts.
Do I lose borrowed library books if I don't return them?
No. Borrowed books automatically delete from your device when the loan period ends. You don't have to do anything, and there are no late fees. You can borrow the same book again whenever you want.
Can I add books to Kindle on a computer?
Yes. Go to Amazon.com, find the book, and select which Kindle device to send it to before you buy. You can also email files to your Kindle email address from any computer. You cannot read Kindle books directly in a web browser, but you can download the free Kindle app for Windows or Mac and read there.