It's a good idea to change your password routinely. This is especially true for Chromebooks because you use your Google Account to sign in. Fortunately, it's quite easy to change the password on a Chromebook.
If you're using a Chromebook, you'll have a good chance of using Google services on your other devices. For example, you can write a Google Doc on your Chromebook and then read it back later on your iPad, mobile phone, or other device. All of this happens via your Google Account, and you can access all your Google Drive files with just one password.
You use your Google Account to sign in to the Chromebook as well, and changing the password on your Chromebook will also change your Google Account. Next time you use Google services on another device, you will 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 corner and then select Google Account.
Select Login and Security.
Scroll until you see the Sign in section of Google, then select "Password."
Enter your password.
Confirm with your two-factor authentication method.
Enter and confirm your new password. You want to ensure that your password is strong or even better, generated by a password manager . Select "Change Password".
A popup screen lets you know that you will be logged out of your Google Account on other devices. You will be logged in to your current Chromebook, and if you use Google Prompt on your smartphone as your two-factor authentication method, you can choose to remain logged in to that phone. Select "OK".
That's it! You must log in with your new password on your other devices. then everything will work just like before!