Making a phone call on your computer works through internet-based calling apps, not through your computer's built-in hardware

Your computer does not have a phone line or cellular connection built in, so you cannot dial a number the way you would on a phone. Instead, you use a calling app that sends your voice over the internet. The most common options are Skype, Google Meet, Zoom, WhatsApp, and Discord. Each one works slightly differently, but they all require the same basic setup: an internet connection, a microphone, speakers or headphones, and an account with the service you choose.

The call quality depends on your internet speed. A stable connection of at least 2.5 megabits per second works well for voice calls. If your internet is slower or unstable, the call may cut out or sound choppy. Most home internet connections are fast enough, but if you are on a shared network with many people using it at once, calls may suffer.

Key Takeaways

  • You need a calling app like Skype, Google Meet, WhatsApp, or Zoom, plus an internet connection, microphone, and speakers or headphones.
  • Calling another computer user is free through most apps, but calling a regular phone number usually costs money or requires a paid subscription.
  • Set up your microphone and speakers in the app's settings before your first call to avoid sound problems.
  • The person you are calling must have the same app installed and be online, or you must have their phone number if the app supports calling regular phones.

Setting up your microphone and speakers

Before you make your first call, test your audio hardware. Open the calling app you plan to use and look for a Settings or Preferences menu. In most apps, this is found by clicking your profile picture or a gear icon. Find the Audio or Devices section.

Select your microphone from the dropdown menu. If you have a built-in microphone on your laptop, it will usually say "Built-in Microphone" or show your computer's model name. If you have an external USB microphone or headset plugged in, it will appear as a separate option. Do the same for speakers or headphones — choose the device you want to hear the call through. Many people prefer headphones because they reduce background noise and prevent echo.

Most apps have a test button that lets you record a short message and play it back. Use this to make sure your microphone is picking up your voice clearly and your speakers are loud enough. Speak at your normal volume and distance from the microphone — usually 6 to 12 inches away works best. If the playback sounds muffled or too quiet, adjust the microphone position or volume slider in the settings.

Calling another computer user for free

Calling someone else who has the same app installed is free and straightforward. Open the app and find the person's contact information. In Skype, you search for their username. In WhatsApp, you find them by their phone number. In Google Meet, you can call a contact by their email address. In Discord, you find them in your server or friend list.

Click the call button — it usually looks like a phone icon or handset. The app will send a notification to the other person asking them to accept the call. They must be online and have the app open, or at least have notifications turned on so they see the incoming call. Once they accept, your call connects and you can talk. The call ends when either person hangs up or closes the app.

If the person does not answer within a few minutes, the call will time out and you can try again later. Some apps let you leave a voice message if the person does not pick up, similar to voicemail on a phone.

Calling a regular phone number from your computer

If you want to call someone's mobile phone or landline from your computer, you have two options: use a paid calling service through the app, or use a separate service like Google Voice.

Skype offers a paid plan called Skype Credit or a monthly subscription. You buy credit or pay a monthly fee, then dial phone numbers directly from the app. Rates vary by country and whether you are calling a mobile or landline. Google Meet also offers calling to phone numbers, though it is primarily designed for video meetings. WhatsApp lets you call phone numbers in some countries if you have WhatsApp Credit.

Google Voice is a separate service that gives you a free phone number and lets you make calls to real phone numbers from your computer, phone, or tablet. You sign up with a Google account, choose a phone number in your area, and then use the Google Voice website or app to make calls. Calls to numbers in the United States and Canada are free. International calls cost money, but rates are usually lower than traditional phone services.

Troubleshooting common call problems

If the other person cannot hear you, the problem is usually your microphone. Check that you selected the correct microphone in Settings and that the microphone volume is turned up. Make sure nothing is blocking the microphone — on a laptop, this is usually near the top of the screen. If you are using an external microphone, check that it is plugged in securely and that the cable is not damaged.

If you cannot hear the other person, check your speaker or headphone volume. Make sure the app itself is not muted — most apps have a mute button during a call that looks like a microphone with a line through it. If you are using headphones, make sure they are plugged in all the way. If you are using speakers, move closer to them or turn up the volume in both the app and your computer's system settings.

If the call keeps dropping or cutting out, your internet connection is likely too slow or unstable. Move closer to your Wi-Fi router, or switch to a wired connection if your computer has an ethernet port. Close other apps or browser tabs that might be using bandwidth, such as video streaming or large file downloads. If the problem continues, restart your router by unplugging it for 30 seconds and plugging it back in.

If the other person says there is an echo or they hear themselves talking, you may have both your microphone and speakers on at the same time. Use headphones instead of speakers, or mute your microphone when you are listening. Some apps have an echo cancellation setting in the audio preferences — turn this on if you see it.

Choosing the right app for your needs

Different apps work better for different situations. Skype is the oldest and most widely used for one-on-one calls, especially if you need to call regular phone numbers. Google Meet is built into Gmail and works well for group video calls and meetings. Zoom is popular for larger meetings and webinars. WhatsApp is best if most of your contacts already use it and you want messaging and calling in one app. Discord is designed for gaming communities but works well for group voice chat.

If you only need to call other computer users and do not need to call regular phones, any of these apps will work. If you need to call phone numbers regularly, Skype or Google Voice are your best options. If you are calling internationally, compare rates between services — they vary significantly by country.

Most of these apps are free to read and use for computer-to-computer calls. You only pay if you want to call regular phone numbers or if you choose a premium subscription for extra features like better video quality or more storage for recordings.

Frequently Asked Questions

Do I need to pay to call someone on the same app?

No. Calling another person who has the same app installed is free as long as you both have an internet connection. You only pay if you want to call a regular phone number or if you choose a paid subscription for premium features.

Can I call someone if they do not have the app installed?

Not through that app. However, if the app supports calling regular phone numbers (like Skype or Google Voice), you can call their phone number instead. Otherwise, you would need them to install the app first.

What if my computer does not have a built-in microphone?

You can buy an external USB microphone or a headset with a built-in microphone. They plug directly into your computer and work with any calling app. USB headsets are popular because they include both a microphone and speakers in one device.

Will my internet bill go up if I make lots of calls?

No. Calling through apps uses your regular internet connection, so it counts toward your monthly data limit the same way browsing or streaming video does. It does not create separate charges unless you are calling regular phone numbers through a paid service like Skype Credit.

Can I record a call on my computer?

Most apps have a built-in recording feature, but you must tell the other person you are recording — this is required by law in many places. Look for a Record button during the call, usually in the menu at the bottom of the screen. The recording saves to your computer as a video or audio file.