You can read Kindle books on your computer using the free Kindle app or your web browser

Amazon lets you read Kindle books on a Windows or Mac computer in two ways: read the Kindle for PC or Kindle for Mac app, or open any Kindle book directly in your web browser through Kindle Cloud Reader. Both are free. The app gives you more features and works offline; the browser version works anywhere without installation but requires an internet connection. Either way, you use the same Amazon account and library you use on your Kindle device.

Your books stay synced across devices — if you read three chapters on your phone, your computer remembers where you stopped and jumps you back to that spot when you open the book there.

Key Takeaways

  • read the Kindle app for your computer from Amazon's website, or use Kindle Cloud Reader in your browser — both are free and use your existing Amazon account.
  • The Kindle app works offline and offers more reading features like adjustable fonts and highlighting, while Cloud Reader requires internet but needs no installation.
  • Your reading progress syncs automatically across all your devices, so you can pick up where you left off on any screen.
  • You can adjust text size, font, background color, and margins in both versions to make reading more comfortable for your eyes.
  • Books you own on your Kindle device appear in your library on the computer automatically — no extra steps needed.

Installing the Kindle app on Windows or Mac

Go to amazon.com/kindle and scroll to the bottom of the page. Click "Kindle Apps" or look for a link that says "Read Free with Kindle Apps." You will see options for different devices. Select either Kindle for PC (Windows) or Kindle for Mac (macOS), then click the read button.

Once the installer downloads, open it and follow the on-screen prompts. The app will ask you to sign in with your Amazon account — use the same email and password you use for your Kindle device. After you sign in, the app opens and shows your library. All the Kindle books you own will appear automatically. Click any book to start reading.

The first time you open a book, it may take a few seconds to read. After that, the book stays on your computer and opens when ready.

Using Kindle Cloud Reader in your browser

Open any web browser and go to read.amazon.com. Sign in with your Amazon account. Your entire Kindle library appears on the screen. Click the book you want to read, and it opens in the browser window.

Cloud Reader works in Chrome, Firefox, Safari, and Edge. You do not need to install anything, and you can use it on any computer — at work, at a library, at a friend's house — as long as you have internet. The trade-off is that Cloud Reader has fewer customization options than the app, and you cannot read offline.

If you switch between the app and Cloud Reader, your bookmarks and reading position sync automatically. You can start a book in the app, then pick it up in Cloud Reader later without losing your place.

Adjusting text size, fonts, and display settings

In the Kindle app, open a book and look for the Aa button near the top of the window. Click it to open the display menu. From here you can make the text larger or smaller, change the font, adjust line spacing, and switch the background color from white to sepia or dark mode. These changes explore only to the book you are reading — you can set different preferences for different books.

In Cloud Reader, click the same Aa button. The options are similar but fewer: you can change text size, font, and background color, but not line spacing. Dark mode is available and helps reduce eye strain if you read at night.

Both versions remember your settings, so if you set the text to large and the background to dark, every book opens that way until you change it again.

Highlighting, notes, and bookmarks

In both the app and Cloud Reader, you can highlight passages and add notes. Click and drag to select text, then choose "Highlight" from the menu that appears. You can pick a highlight color — yellow, orange, pink, or blue. To add a note, select the text and click "Add Note," then type your comment.

All your highlights and notes sync across devices. If you highlight a sentence on your computer, that highlight appears on your phone and Kindle device. You can view all your highlights and notes in one place by clicking "My Clippings" or "Notes" in the app menu.

Bookmarks work the same way — click the bookmark icon to mark a page, and that bookmark appears on all your devices.

Troubleshooting common problems

If your books do not appear in your library, make sure you are signed in with the correct Amazon account. Some people have multiple accounts — check that the email address shown in the app or browser matches the account where you bought the books. If it does not match, sign out and sign in again with the right account.

If the app crashes or freezes, try closing it completely and reopening it. On Windows, right-click the Kindle icon in the taskbar and select "Close Window." On Mac, click the Kindle menu and select "Quit Kindle." Wait a few seconds, then open the app again.

If a book will not read or opens very slowly, check your internet connection. Even though the app works offline once a book is downloaded, it needs internet to read the book in the first place. If you are on a slow connection, try again later or use a different network.

If you see a message that says your device is not registered, sign out of the app, restart your computer, and sign back in. This usually fixes the problem.

Frequently Asked Questions

Can I read library books on my computer using Kindle?

Yes, if your library uses OverDrive or Libby. Those apps let you borrow ebooks and read them in Kindle format on your computer. Check your library's website to see if they offer ebook borrowing. The process is separate from Amazon's Kindle app — you borrow through the library, not through Amazon.

What happens if I read a book on my computer and then on my Kindle device?

Your reading position syncs automatically. If you read to page 50 on your computer, your Kindle device will jump to page 50 when you open the same book. This works as long as both devices are connected to the internet and signed in to the same Amazon account.

Can I transfer Kindle books from my computer to another person?

No. Kindle books are tied to your Amazon account and cannot be transferred or shared. Each person needs their own Amazon account and must purchase or borrow the book themselves. You can share your account login, but Amazon's terms of service do not allow this.

Does the Kindle app use a lot of storage space?

The app itself is small — about 100 to 200 megabytes. Individual books vary, but most are 1 to 5 megabytes each. Even if you read 100 books, they will take up less than 1 gigabyte of space on your computer.

Can I read Kindle books offline on my computer?

Yes, but only with the Kindle app, not Cloud Reader. Once you read a book in the app, you can read it without internet. Cloud Reader always requires an internet connection because the book stays on Amazon's servers.