It’s good practice to change your password routinely. This is especially true for Chromebooks since you use your Google account to log in. Fortunately, changing your password on a Chromebook is pretty easy to do.
If you’re using a Chromebook, there’s a good chance you use Google’s services on your other devices. For instance, you can write up a Google Doc on the Chromebook, then read it back later on your iPad, cell phone, or any other device. All of this happens through your Google account, and you can get to all your Google Drive files with just that one password.
You use your Google account to log in to the Chromebook as well, and changing the password on the Chromebook will also change it for your Google account. The next time you go to use Google services on another device, you’ll be prompted to sign in with your new password.
How to Change Your Password on Your Chromebook
Start by opening a new Chrome browser window.
Select your profile photo in the upper-right, then select Google Account.
Select Sign-in & security.
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Source: How-To Geek