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Free Virus Scanner and Removal Tool

Don’t worry about viruses. Avast Free Antivirus scans and cleans the viruses currently on your device, and stops future viruses and threats from infecting your system. And it's 100% free and easy to use.

Our users love our product

173 people scored us 4.7/5

Our best free virus scanner and virus cleaner

Avast’s virus scanner finds and removes viruses faster, more thoroughly, and more accurately than ever before.

Avast’s free antivirus software lets you:

Get the world’s largest threat-detection network and machine-learning malware protection in a single, lightweight malware scan and removal tool — 100% free.

Award-winning virus protection

Avast Free Antivirus is powered by a world-class antivirus engine that’s been bringing in awards for years. Independent security testing labs and reviews agree that Avast’s online and offline cybersecurity protection is among the best in the world.

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Avast Free Antivirus won PCMag’s coveted Editors’ Choice award for 2021, and our trophy room is packed with awards from industry-respected sources, including:

  • PC-mag_logo2

    PCMag: Editors’ Choice, 2021

  • award-av-comparative-plkaceholder

    AV Comparatives: Top Rated Product Award, 2020

  • AV_test-logo2

    AV-TEST: Top Product, AV Test Certified, 2020

  • award-av-comparative-plkaceholder

    AV Comparatives: 2018 Product of the Year

  • award-av-comparative-plkaceholder

    AV Comparatives: Advanced+ in malware protection and removal, 2018

An antivirus trusted by over 400 million users

But don’t just take our word for it.

Mobiles? Macs? We’ve got it all covered

We also protect every device that needs virus security, including your Mac and mobile device (which are in danger of infection, too).

Avast’s Mac security software is powered by one of the world’s strongest threat-detection networks — defending and optimizing your Mac to keep it safe from viruses and other malware.

Get Android antivirus protection from Avast to check for viruses and remove them from your phone. We’ll also safeguard your Wi-Fi network connection and defend your phone with the same world-class cybersecurity we bring to PCs and Macs.

Download our free virus scanner and remover

There’s no better way to find and destroy viruses than Avast Free Antivirus.
And because it’s entirely free, it’d be far costlier not to have it protecting you.

FAQs

How to run a virus scan?

The easiest way to scan for viruses and clean phone viruses is with a free virus removal tool, like Avast Free Antivirus. Download and install our online virus checker, then perform a quick virus scan to detect and remove viruses from your PC.


Our detailed guides will show you how to clean your computer of viruses, how to clean viruses from your laptop, and how a phone virus checker can protect your mobile devices:

Are there any free virus scans?

Free virus detection software from a reputable provider like Avast is the best way to perform a free virus scan, online as well as off. We’ll automatically detect, block, and remove viruses and other malware from your devices.

Protect your Mac and clean phone viruses with our free virus checkers:

Should I run a virus scan on Mac or mobile devices, too?

You should perform virus scans and use malware removal software on all your devices. Any device that can go online can get viruses or other types of malware. This means that your Mac and phone may be vulnerable to viruses.


While Android devices are more likely to get infected than iPhones or iPads, iOS devices are vulnerable to other security threats. Removing adware and protecting against ransomware are important for any device.

Is Windows Defender enough to protect my PC?

Windows Defender lacks many essential features that other free antiviruses provide, such as offline protection and comprehensive anti-phishing defenses. It’s far better to use a professional free virus scanner and remover like Avast Free Antivirus to perform malware checks and keep your data safe.

What does a virus scan do?

A virus scan checks your computer or mobile device for viruses, worms, and other types of malware. Many online virus checkers look for known viruses, while some — including Avast Free Antivirus — can detect signs of unusual behavior that may indicate new types of malware.

What is a computer virus?

A computer virus is a type of malware that can replicate and spread from one device to another on its own. Viruses often spread through infected emails and websites, malvertising campaigns, or by exploiting vulnerabilities in outdated software.

Can phones get viruses?

While phone viruses don’t quite exist, your phone is at risk of infection by other types of malware. Android devices are at greater risk than iPhones since you can install apps from unofficial sources, but malicious apps have been found in both Google Play as well as Apple's App Store.

Can Macs get viruses?

Macs can get viruses, such as the macro viruses that infect victims through Microsoft Word documents. Other types of malware — such as ransomware, Trojans, and adware — may present more significant threats to Mac users.

System requirements

We’re not demanding. All you need is a PC with Windows 11, 10, 8.1, 8 or 7*, 1 GB RAM 
and 2 GB of hard disk space. And that’s it.

* Both the 32- and 64-bit versions, excluding Starter and RT editions.

Windows 10 compatible

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Get free virus protection for PC with Avast Free Antivirus

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Get free malware protection for Mac with Avast Security

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Get free virus protection for Android with Avast Mobile Security

FREE INSTALL
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Get free threat protection for your iPhone with Avast Mobile Security

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