Making calls from your computer is simpler than you might think

You can make phone calls directly from your computer using software or a web browser, without needing a traditional phone line. The most common methods are VoIP services (Voice over Internet Protocol), which send your voice through the internet, or built-in calling features in apps you may already use. Your computer needs a microphone and speakers (or headphones), an internet connection, and either a subscription service or a free app.

The route you choose depends on who you want to call—other computer users, mobile phones, or landlines—and whether you want to pay for the service or use something free. This guide walks you through the main options and how to set each one up.

Key Takeaways

  • You can call other computer users for free using apps like Skype, Google Meet, or Discord, which only require both people to have the app installed.
  • To call mobile phones or landlines from your computer, you need a paid VoIP service like Skype Credits, Google Voice, or Vonage, which charges per minute or offers monthly plans.
  • Your computer must have a working microphone and speakers or headphones, and a stable internet connection—WiFi or broadband both work.
  • Most free calling apps work best when both people are using the same app, while paid services let you call anyone with a phone number.
  • Test your audio before your first call by checking microphone and speaker levels in your computer's sound settings.

Free calling apps for computer-to-computer calls

If you want to call someone else using a computer, tablet, or smartphone, free apps are the easiest route. Skype, Google Meet, Zoom, and Discord all let you make voice calls at no cost as long as both people have the app. You create a free account, add the other person as a contact, and call them directly.

Skype is the oldest and works on Windows, Mac, and Linux. Google Meet is built into Gmail and Google accounts. Discord is popular for gaming and group calls. Zoom is designed for meetings but works for one-on-one calls too. read the app from the official website or your computer's app store, create an account with an email address, and search for the person you want to call by their username or email.

The main limitation is that both people must have the same app installed. If your friend uses Skype but you use Discord, you cannot call them directly—you would both need to switch to a shared app or use a different method.

Paid VoIP services for calling phone numbers

To call a mobile phone or landline from your computer, you need a VoIP service that connects to the regular phone network. These services charge money, either per minute or as a monthly subscription. The most common are Skype Credits, Google Voice, Vonage, and MagicJack.

Skype Credits lets you buy credit and call any phone number worldwide. You load money into your account and pay per minute—rates vary by country. Google Voice is free for calls within the United States and Canada, but you need a Google account and a phone number to set it up. Vonage and MagicJack offer monthly plans that include a set number of minutes or unlimited calling, similar to a traditional phone service.

These services require you to read software or use a web browser, enter payment information, and sometimes verify a phone number. Once set up, you dial the number from your computer just as you would on a phone. The person on the other end sees either your real phone number (if the service provides one) or a generic number, depending on the service.

Setting up your computer's audio for calling

Before you make your first call, check that your microphone and speakers work. On Windows, right-click the speaker icon in the bottom right corner and select Open Sound settings. Scroll to Input and look for your microphone listed under Choose your input device. Click the microphone name and speak—you should see the volume bar move. If it does not, the microphone is not working or is muted.

For speakers, stay in Sound settings and scroll to Output. Select your speakers or headphones from the list. Click the test button or play a sound to confirm you hear it. On Mac, open System Preferences, click Sound, and check both the Input and Output tabs the same way.

If your microphone or speakers do not appear, they may not be plugged in or installed. Plug in USB headphones or a microphone, wait a few seconds, and check again. If a device still does not show up, restart your computer. Most calling apps also have their own audio settings—once you open the app, look for Settings or Preferences and select your microphone and speakers there as well.

Internet connection requirements for calling

VoIP calls use very little data—typically 0.5 to 1.5 megabits per second (Mbps) for a voice call. Most home internet connections, whether WiFi or broadband, easily handle this. However, if your internet is slow or unstable, your call may drop, sound choppy, or cut out.

Test your connection speed by visiting speedtest.net in your browser. If your read speed is below 2.5 Mbps, your internet may struggle with calling, especially if other people in your home are using the internet at the same time. If you have a WiFi connection, try moving closer to your router or switching to a wired connection using an ethernet cable, which is more stable than WiFi.

If you are on a shared network—at work, school, or a coffee shop—some networks block VoIP calls or limit them. Try the call anyway; if it does not work, you may need to use a different network or ask the network administrator for permission.

Troubleshooting common calling problems

If the other person cannot hear you, your microphone is either muted or not selected in the app. Check the app's settings first—most have a microphone icon that you can click to unmute. Then check your computer's sound settings to make sure the correct microphone is selected. If you are using a USB headset, unplug it and plug it back in, then restart the app.

If you cannot hear the other person, check that your speakers or headphones are not muted and that the volume is turned up. In the calling app, look for a speaker icon and make sure it is not muted. If you are using headphones, make sure they are plugged in fully. Restart the app and try again.

If the call keeps dropping or sounds robotic, your internet connection is likely unstable. Close other apps that use the internet—streaming video, downloads, or online games—and try calling again. If the problem continues, restart your router by unplugging it for 30 seconds and plugging it back in. If calls still fail, contact your internet provider to check your connection speed.

Choosing between free and paid calling services

Use a free app like Skype, Google Meet, or Discord if you mostly call other computer users or want to avoid paying. These work well for personal calls, family video chats, and group conversations. The trade-off is that the other person must have the same app, and you cannot call regular phone numbers.

Use a paid VoIP service if you need to call mobile phones or landlines regularly, or if the people you call do not have a computer or do not want to install an app. Skype Credits work well for occasional calls to a few numbers. Google Voice is the cheapest option for calling within the United States and Canada. Monthly plans from Vonage or MagicJack make sense if you call frequently and want a dedicated phone number.

Many people use both—a free app for calls to friends and family who have computers, and a paid service for calling businesses, doctors, or people without internet access. Start with a free app and upgrade to paid only if you find yourself needing to call phone numbers regularly.

Frequently Asked Questions

Do I need a phone number to make calls from my computer?

Not for free computer-to-computer calls—you only need a username or email address in the app. For calling mobile phones or landlines, you need a paid VoIP service, which may provide you with a phone number or let you use your existing number. Google Voice gives you a free phone number if you are in the United States.

Can I use my regular phone number with computer calling?

Some VoIP services let you port your existing phone number to them, but this varies by service and location. Others give you a new number. Ask the service before you sign up if keeping your current number is important to you.

What if I have a slow internet connection?

Calling requires at least 2.5 Mbps read speed for reliable audio. If your connection is slower, calls may sound choppy or drop. Try moving closer to your WiFi router, using an ethernet cable instead of WiFi, or closing other apps that use the internet. If the problem continues, contact your internet provider.

Can I record calls made from my computer?

Most calling apps have a built-in record feature, but laws about recording vary by state and country. Some places require both people to agree to recording before you start. Check your local laws and the app's terms of service before recording any call.

What happens if the person I am calling does not have the same app?

They will not receive the call. You would need to either ask them to read the app, switch to an app you both have, or use a paid VoIP service that lets you call any phone number.