Firefox fights for you on Windows.

Download Firefox — English (US)

Your system may not meet the requirements for Firefox, but you can try one of these versions:

Download Firefox — English (US)

• Advanced install options & other platforms
• Download in another language
• Fix a problem
• Need help?

• Download in another language
• Need help?

• Need help?

2x Faster

Firefox moves fast and treats your data with care — no ad tracking and no slowdown.

Common sense privacy

Live your life, Firefox isn’t watching. Choose what to share and when to share it.

Seamless setup

Easy migration of preferences and bookmarks when you download Firefox for Windows.

Advanced install options & other platforms

• 
• 

Download Firefox
for Windows

Download Firefox
for macOS

Download Firefox
for Linux

Download Firefox — English (US)

Your system may not meet the requirements for Firefox, but you can try one of these versions:

Firefox features

Firefox is the fast, lightweight, privacy-focused browser that works across all your devices.

Download Firefox — English (US)

Your system may not meet the requirements for Firefox, but you can try one of these versions:

Download Firefox — English (US)

A better internetting experience

Browse faster

Firefox uses less memory than Chrome, so your other programs can keep running at top speed.

Your favorite extensions

Add powerful functions, useful features and even a little fun to your Firefox browser.

Balanced memory

Firefox uses just enough memory to create a smooth experience so your computer stays responsive to other tasks.

More powerful Private Browsing

Private Browsing mode deletes cookie data and your browsing history every time you close it.

Ad tracker blocking

Firefox automatically blocks 2000+ ad trackers from following you around the internet.

Password manager

Firefox Lockwise lets you access all the passwords you’ve saved in Firefox — and it’s free.

Customize your browser

Give your browser the look you want with thousands of different themes.

Sync between devices

Make sure all your important stuff — internet searches, passwords, open tabs — appears where you need it on every device.

Better bookmarks

Use the bookmark star icon to stay organized and add custom names and folders quickly.

Fingerprinter Blocking

Fingerprinting is a type of online tracking that’s more invasive than ordinary cookie-based tracking — that’s why Firefox Browser blocks it.

Translate the web

Translate from more than 100 languages to your language directly in your Firefox Browser — easier than ever.

Picture-in-Picture

Got things to do and things to watch? Do both using Picture-in-Picture in Firefox.

From a company that puts people before profit

Open source. Open minds.

Mozilla creates powerful web tech for everyone.

By not-for-profit, Mozilla

On a mission to keep the internet open and accessible to all.

Keep corporate power in check

Firefox is the only major independent browser.

Private by default

Opted-in to privacy, so you can browse freely.

Enhanced tracking protection

We don’t sell access to your online data. Period.

Firefox vs. other browsers

See how Firefox stacks up against other popular browsers.

A more secure Firefox.

Download Firefox — English (US)

Your system may not meet the requirements for Firefox, but you can try one of these versions:

Download Firefox — English (US)

Users on 64-bit Windows who download Firefox can get our 64-bit version by default. That means you get a more secure version of Firefox, one that also crashes a whole lot less. How much less? In our tests so far, 64-bit Firefox reduced crashes by 39% on machines with 4GB of RAM or more.

What’s the difference between 32-bit and 64-bit?

Here’s the key thing to know: 64-bit applications can access more memory and are less likely to crash than 32-bit applications. Also, with the jump from 32 to 64 bits, a security feature called Address Space Layout Randomization (ASLR) works better to protect you from attackers. Linux and macOS users, fret not, you already enjoy a Firefox that’s optimized for 64-bit.

How do you get 64-bit Firefox?

If you’re running 64-bit Windows (here’s how to check), your Firefox may already be 64-bit. Check your Firefox version (in the “About Firefox” window) and look for “(32-bit)” or “(64-bit)” after the version number:

• If you see “(32-bit)” and you are running Firefox 56.0 or older, updating to the latest Firefox version should automatically upgrade you to 64-bit.
• If you see “(32-bit)” and are running Firefox 56.0.1 or newer, then your computer may not meet the minimum memory requirement for 64-bit (3 GB RAM or more). You can still manually install 64-bit Firefox, if you choose.

If you need to run 32-bit Firefox or manually install 64-bit Firefox, you can simply download and re-run the Windows (32-bit or 64-bit) Firefox installer from the Firefox platforms and languages download page.

Take a browse on the wild side.

Be among the first to explore future releases of Firefox for desktop, Android and iOS.

Test about-to-be-released features in the most stable pre-release build.

Firefox Beta — English (British)

Your system may not meet the requirements for Firefox, but you can try one of these versions:

Firefox Beta — English (British)

Beta is an unstable testing and development platform. By default, Beta sends data to Mozilla — and sometimes our partners — to help us handle problems and try ideas. Learn what is shared.

Give us feedback to help us put the final tweaks on performance and functionality in a stable environment.

Developer Edition

Build, test, scale and more with the only browser built just for developers.

Firefox Developer Edition — English (British)

Your system may not meet the requirements for Firefox, but you can try one of these versions:

Firefox Developer Edition — English (British)

Developer Edition is an unstable testing and development platform. By default, Developer Edition sends data to Mozilla — and sometimes our partners — to help us handle problems and try ideas. Learn what is shared.

Nightly

Get a sneak peek at our next generation web browser, and help us make it the best browser it can be: try Firefox Nightly.

Firefox Nightly — English (British)

Your system may not meet the requirements for Firefox, but you can try one of these versions:

Firefox Nightly — English (British)

Nightly is an unstable testing and development platform. By default, Nightly sends data to Mozilla — and sometimes our partners — to help us handle problems and try ideas. Learn what is shared.

See something that isn’t working? Let us know.

Thanks!

If you haven’t previously confirmed a subscription to a Mozilla-related newsletter you may have to do so. Please check your inbox or your spam filter for an email from us.

How to download and install Firefox on Windows

This article explains how to download and install Firefox on Windows using a simplified online installer. (If you need a full, offline installer or custom options, see For advanced users, below.)

Before installing Firefox, see the Firefox System Requirements to make sure that your computer has the required operating system and recommended hardware.

Do not install Firefox using a limited Windows XP account. For more information, see Microsoft’s support article How to determine your user account type in Windows.

1. Visit this Firefox download page in any browser, such as Microsoft Internet Explorer or Microsoft Edge.
2. Click the Download Now button. The Firefox Installer that downloads will automatically offer you the best available version of Firefox for your computer.
   • If you use Microsoft Edge or Internet Explorer, a notification bar will appear at the bottom of the page with an option to open or run the Firefox Installer file.

   

   • Click Open file on Microsoft Edge or Run on Internet Explorer, to start the process.
   • In other browsers, you may need to first save the Firefox installer to your computer, then open the file you downloaded.
     Note: If you see an Open File — Security Warning dialog, click Open or Run .

   

3. The User Account Control dialog may open, to ask you to allow the Firefox Installer to make changes to your computer. If this dialog appears, click Yes to start the installation.
4. Wait for Firefox to finish installing.
5. When the installation is complete, Firefox will open.

Double-click the Firefox icon that was placed on the desktop whenever you want to go online.

Having problems?

Here are some articles that can help you:

If you need more help, you can always get community support.

For advanced users

The streamlined Firefox Installer installs a suitable Firefox version for your language and operating system. For example, on 64-bit Windows, it installs the 64-bit version of Firefox (details here). To install Firefox in another language or operating system, or if you need a full, offline installer with custom options, download the Firefox Setup file from this download page. Options available in the full, offline installer are described in the article, Custom installation of Firefox on Windows.

These fine people helped write this article:

Volunteer

Grow and share your expertise with others. Answer questions and improve our knowledge base.

Related Articles

Custom installation of Firefox on Windows

Firefox installations on Windows have been simplified with the online Firefox Installer. This streamlined installer removed the Options page which.

Windows 10 warns me to use a «Microsoft-verified» app

In certain versions of Windows 10, you may receive a notification when you run the Firefox installer with a warning about Microsoft-verified.