How to Log Out of Google Hangouts

On Desktop

Go to Google Hangouts. Visit hangouts.google.com in your web browser.

Click on your profile picture at the top right. Doing so will prompt a box to appear.

Log out of your account. Click the Sign out button.

Finished. If you want to log in again to your account, just click on the "Sign in" button.

On iPhone app

Launch the Hangout app on your device.

Open the menu. Tap on the ≡ icon at top left side.

Tap on the down arrow (▼), next to your account.

Tap on "Manage Accounts".

Log out from your account. Just tap on the account which you’d like to stop using now.

On Android app

Open the Hangout app on your phone.

Navigate to the menu. Just tap on the ≡ at the top left.

Open the Hangouts Settings. To do that, just tap "Settings" from the menu.

Select an account, which you want to "log out" now. Tap on an account from there.

Log out of your account. Scroll down to the bottom and tap Sign out. Done!