If you’re tired of signing in and out, or opening up new browsers in order to check all of your accounts at the same time, you can use multiple sign-in. With multiple sign-in, you’re able to access different Google products with up to 10 accounts using tabs in the same browser. Multiple sign-in is automatically enabled for all Google Accounts.
If you use multiple sign-in, the first account you use to sign in during that browser session will be yourdefault account for the rest of that session. If you visit other Google products that don't support multiple accounts after you've signed in, you will automatically sign in to your default account for that product. If you sign out of any Google product while signed in to any account, you will be signed out of all your Google Accounts at once.
Once you’re signed in to more than one account in the same browser, you can easily switch accounts in the same tab. Just click your name or email address at the top and click on the email address you’d like to sign in to.
You can use multiple sign-in with the following desktop versions of these Google products:
Other Google products and the mobile versions of the above products do not support the use of multiple accounts in the same web browser. Instead, they default to the first account that you signed in to from your current browser.
If you want to use an account with a product that doesn't support multiple accounts, you have two options: