You can update your WordPress password from within the Dashboard. You must know your current password to use these steps.

Log in to your WordPress admin dashboard.

Select Users then All Users from the main menu.

Locate your username in the list and click on it.

On the Profile page, click on Generate Password.

Enter your new password, or make note of the automatically generated.

Note: Please remember that your website's security is only as good as your password strength.

Click the Update Profile button.

Your new password should work immediately.