Find what version of Firefox you are using

Firefox Firefox Last updated: 59% of users voted this helpful
Our volunteers are working on translating this article. Until it's ready, maybe the English version can be of some help. If you want to help us translate articles like this one, please click here.

It's often important to know what version of Firefox you are using, to help you troubleshoot a problem or just to know if Firefox is up to date. Here is how you can find out.

Click the menu button Fx89menuButton, click Help and select About Firefox.On the menu bar, click the Firefox menu and select About Firefox. The About Firefox window will appear. The version number is listed underneath the Firefox name.

Here is an example of what the About Firefox window will look like:

Fx86aboutFirefox-macFx91AboutFirefoxWindowFx86aboutFirefox-linux

Opening the About Firefox window will, by default, start an update check. If an updated version of Firefox is available, it will be automatically downloaded. On Linux, this will happen only if you use a build downloaded from Mozilla's website; otherwise, updates will come through your Package Manager. For more information, see Update Firefox to the latest release.

Tip: You can also find your Firefox version on the Troubleshooting Information (about:support) page. Your Firefox version is listed underneath the Application Basics section of the page.

Was this article helpful?

Please wait...

These fine people helped write this article:

Illustration of hands

Volunteer

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

Learn More