Free Virus Scanner & Remover

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 One lets you:

Fight back against viruses

We don’t just detect and delete existing viruses — we’ll stop them from infecting you again.

Prevent new threats as they emerge

You’ll never be caught off-guard by newer threats: Avast updates itself hundreds of times a day to ensure cutting-edge protection.

Stop malware and other threats

Antivirus security doesn’t begin and end with viruses. We also protect your PC from bad browser extensions, outdated software, and other common risks.

Stay private online

Avast One includes free VPN access, data leak protection, and other privacy tools to secure your personal data.

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

DOWNLOAD FREE ANTIVIRUS

Get it for Android, iOS, Mac

DOWNLOAD FREE ANTIVIRUS

Get it for iOS, Android, PC

INSTALL FREE ANTIVIRUS

Get it for PC, Mac, iOS

INSTALL FREE PROTECTION

Get it for Mac, PC, Android

Award-winning virus protection

Avast One 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.

Avast One took home PCMag’s coveted Editors’ Choice award for 2021, and TechRadar awarded Avast One a full five stars. Our trophy room is packed with awards from industry-respected sources, including:

PCMag: Editors’ Choice, 2021

TechRadar: 5 stars, 2021

AV-TEST: Top Product, AV Test Certified, 2021

AV Comparatives: Top Rated Product Award, 2020

AV Comparatives: 2018 Product of the Year

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.

The UI for your software - amazing. Great work over the years. Can't say enough good things!

Ryan R.

Thank you, Avast, for the excellent work you do. I run your antivirus software on both my Mac OS X and my Windows machines. You have the best products on the market, period.

Eric S.

I’ve been using Avast for over a year and have found it one of the best free software protection devices on market.

Daryl C.

Mobiles? Macs? We’ve got it all covered

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

Macs can greatly benefit from improved protection against viruses and all sorts of other malicious threats. 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.

Android devices also benefit from enhanced security against malware and other threats on the internet. Avast’s Android antivirus protection scans for and gets rid of viruses, safeguards your Wi-Fi connection, and defends 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 One. And because it’s entirely free, it’d be far costlier not to have Avast protecting you.

DOWNLOAD FREE ANTIVIRUS

Get it for Android, iOS, Mac

DOWNLOAD FREE ANTIVIRUS

Get it for iOS, Android, PC

INSTALL FREE ANTIVIRUS

Get it for PC, Mac, iOS

INSTALL FREE PROTECTION

Get it for Mac, PC, Android

FAQs

How do I run a free virus scan?

Download a free virus scanner and removal tool.
Install the software by clicking on the .exe file.
Open the program and scan your computer for viruses.

The easiest way by far is by downloading a free virus scanner and removal tool, like Avast One. But if you want to learn how to remove a virus from a specific type of device, we’ve got you covered:

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:

Get Avast Free Antivirus for Windows
Get free Avast Security for Mac
Get free Avast Mobile Security for Android
Get free Avast Mobile Security for iOS

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 One 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 One — can detect signs of unusual behavior that may indicate new types of malware.

Does Google Chrome Scan For Viruses?

Yes, Google Chrome features a built-in malware scanner that will find and remove harmful files and applications on your computer or browser. Go to Settings > Advanced > Reset and clean up and Chrome will scan your computer and remove malicious programs. Chrome’s virus scanner works only on the Windows version of Chrome.

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.

Other tools

Free Anti-Spyware Scanner & Remover

Free Adware Scanner & Cleaner Tool

Free Rootkit Scanner & Removal Tool

Free Anti-Ransomware Tool

Free Malware Scanner & Removal Tool

Free Trojan Scanner & Remover Tool

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

Free Virus Scanner and Removal Tool

Our best free virus scanner and virus cleaner

Avast One lets you:

Fight back against viruses

Prevent new threats as they emerge

Stop malware and other threats

Stay private online

Award-winning virus protection

An antivirus trusted by over 400 million users

Ryan R.

Eric S.

Daryl C.

Mobiles? Macs? We’ve got it all covered

Download our free virus scanner and remover

FAQs

How do I run a free virus scan?

Are there any free virus scans?

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

Is Windows Defender enough to protect my PC?

What does a virus scan do?

Does Google Chrome Scan For Viruses?

What is a computer virus?

Can phones get viruses?

Can Macs get viruses?

Other tools

Other tools

System requirements

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