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Learn how to find out what Firefox version you are using, to help troubleshoot a problem or just to know if Firefox is up to date.

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. {for win,linux}Click the menu button [[Image:Fx57Menu]], click {menu Help} and select {menu About Firefox}.{/for}{for mac}On the menu bar, click the {menu Firefox} menu and select {menu About Firefox}.{/for} The About Firefox window will appear. The version number is listed underneath the Firefox name.<br>''Here is an example of what the About Firefox window will look like:'' {for mac}[[Image:AboutFirefox71-MacOS]]{/for}{for win}[[Image:Fx71aboutFirefoxBrowser]]{/for}{for linux}[[Image:AboutFirefox71-Linux]]{/for} 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. {for linux}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} For more information, see [[Update Firefox to the latest release]]. {note}'''Tip:''' Another way to find your Firefox version is by opening the [[Use the Troubleshooting Information page to help fix Firefox issues|Troubleshooting Information]] page: Click the menu button [[Image:Fx57Menu]], click {menu Help} and select {menu Troubleshooting Information}. A page with the address ''about:support'' will appear in a new tab. Your Firefox version is listed underneath the '''Application Basics''' section of the page.{/note}