This article explains how to make free calls with Google Hangouts.
From the Google Hangouts website
Go to the Google Hangouts website to make a free phone call in your browser to another Hangouts member. Click PHONE CALL in the middle of the screen, then click New Conversation to enter a number or contact name for the person you want to call.
HOW TO USE GOOGLE HANGOUTS ON A SMARTPHONE
You can also make a call from Gmail. First, enable chat via the Chat tab in settings, then click the phone icon at the bottom of the left panel, followed by a plus sign. Select a contact or enter a name or number.
From the Google Hangouts mobile app
Google Hangouts also works from the mobile app. You can get Google Hangouts for iOS or on your Android through Google Play, but you also need to download the Hangouts dialer.
To make a free call, tap the phone icon in the bottom menu on iOS or the Phone tab at the top on Android, then the green dial button, and finally type a number or use the Contacts button at the top to select a contact.
Other features of Google Hangouts
You can also send instant text messages with Google Hangouts and make video calls. Besides, the text messaging features also allow you to send your location to recipients, share photos and videos, and send stickers with the built-in gallery.
From the Google Hangouts app, you can turn off notifications for specific numbers, favor conversations for easier access, and archive conversations to hide them without deleting them.
You can also block numbers in Google Hangouts and receive voicemails from callers.
For areas outside of the US and Canada, check international calling rates for calls made in Hangouts, which are much lower than regular calling plans.
Google Hangouts history
In its early days, Google Hangouts was a well-received video chat app. You could easily organize group video conferences with your friends or colleagues. Hangouts has since morphed to include more features, including sharing and communicating via text messaging and integration with Gmail so you can instant message while dealing with your emails.
Google was quick to announce that Hangouts users could make free phone calls to other Hangouts users on the web, as well as free voice calls to any number in the US or Canada.
Free, wherever you are
Hangouts is free in the US and Canada and has great international rates. So you can make voice calls, send text messages and even participate in group video chats from your mobile device or computer without paying a penny. Google Hangouts works wherever you need to access it, from the mobile app and any computer with internet access.