Free Virus Scan and Removal Tool

Get comprehensive virus protection and removal now with Avast One. Avast’s powerful virus scanner detects and removes existing threats and helps prevent future infections. And it’s 100% free and easy to use.

Download free antivirus

Get it for iOS, Android, PC

Install free antivirus

Get it for PC, Mac, iOS

Download free antivirus

Get it for Android, iOS, Mac

Install free protection

Get it for Mac, PC, Android

2025
Top Rated
Product

2026
Product
of the Year

Powerful virus scanner

Shop and bank securely

Trusted by over 400 million users

Award-winning protection

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. 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 iOS, Android, PC

Install free antivirus

Get it for PC, Mac, iOS

Download free antivirus

Get it for Android, iOS, Mac

Install free protection

Get it for Mac, PC, Android

Advantages of using Avast’s free virus protection

SmartScan

Scans for and removes existing viruses and is constantly updated to defend against new threats.

Web Guard

Uses advanced AI tools to help detect and block websites and URLs that could be scams.

Behavior Shield

Alerts you immediately if unusual app behavior is detected that may indicate an app threat.

File Shield

Scans files for viruses and PUPs to identify and alert you of malicious threats before you open them.

Scam guidance

Get expert guidance in seconds on whether a message or offer is a scam, using the built-in assistant.

Quarantine

Isolates harmful files from the rest of your operating system to keep your device cleaner and safer.

SmartScan

Scans for and removes existing viruses and is constantly updated to defend against new threats.

Web Guard

Uses advanced AI tools to help detect and block websites and URLs that could be scams.

Behavior Shield

Alerts you immediately if unusual app behavior is detected that may indicate an app threat.

File Shield

Scans files for viruses and PUPs to identify and alert you of malicious threats before you open them.

Scam guidance

Get expert guidance in seconds on whether a message or offer is a scam, using the built-in assistant.

Quarantine

Isolates harmful files from the rest of your operating system to keep your device cleaner and safer.

Trusted by third-party virus removal experts

“As new types of malware are discovered, Avast immediately updates its database to ensure that every device under its protection remains protected from the latest threats.” — Aliza Vigderman, Security.org

Discover the ultimate virus checker with Avast One. Get it free today and try out its full suite of antivirus features for yourself.

Download free antivirus

Get it for iOS, Android, PC

Install free antivirus

Get it for PC, Mac, iOS

Download free antivirus

Get it for Android, iOS, Mac

Install free protection

Get it for Mac, PC, Android

Award-winning virus protection

Avast's free antivirus is powered by a world-class antivirus engine that’s been earning awards for years. Independent security testing labs and reviews agree that Avast’s AI-powered heuristic threat detection and protection against viruses and worms is among the best in the world.

Our trophy room is packed with awards from industry-respected sources, including:

Performance Test 2025 AV-Comparatives: Advanced +

Home User Protection Test 2025 AV Test: Top Rated Product

Advanced In-the-Wild Malware Test 2025 AVLab: Product of the Year

VB100 2024 Virus Bulletin: A+

Advanced Threat Protection Test 2024 AV-Test: Advanced

Over 400 million users rely on our virus detector

But don’t just take our word for it.

Avast is fabulous! I have used you for probably 15 years and will never use other virus software!

Gina L.

Best service ever. I've never had better antivirus protection. I have been with them for many years, and I always refer them to anyone who asks.

Robin E.

Easy to use and effective. It's so easy to run the scans while I'm getting my coffee, and when I come back it's all done. Nice!

Roy F.

Get free virus protection for Android, iPhone, & Mac

We protect your everyday devices that need virus security, including Macs. And Android and iOS devices are also at risk from malware like ransomware and Trojans.

MAC

Android

ios

Macs can greatly benefit from improved protection and dedicated virus removal. 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 safer.

Android devices also benefit from enhanced security against malware and other online threats. Avast’s Android antivirus protection scans for and gets rid of viruses, safeguards your Wi-Fi connection, and defends your phone with world-class cybersecurity.

Protect your iPhone and iPad from malware and other online threats with a powerful iOS security app. Help prevent and remove viruses and other malware, block hackers and snoops, and browse the web safely and securely with Avast.

Start your free virus scan

To begin scanning for viruses, download and install our free virus removal tool, then perform a quick virus scan to detect and remove viruses from your PC. It’s as simple as 1, 2, 3

Step 1

Download Avast One, our free virus scanner and removal tool.

Step 2

Open the downloaded file to approve the installation.

Step 3

Open the program and scan your computer for viruses.

Download free antivirus

Get it for iOS, Android, PC

Install free antivirus

Get it for PC, Mac, iOS

Download free antivirus

Get it for Android, iOS, Mac

Install free protection

Get it for Mac, PC, Android

Reasons to use our virus scanner

A virus scan checks your computer or mobile device for viruses 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.

And our virus scanner tool is so much more than just that, combining robust defense against online scams, safer browsing and emailing tools, and home Wi-Fi network protection features — all in one easy-to-install and user-friendly package.

Download our free virus scanner and remover

Find and destroy viruses with Avast One. Get an ironclad virus scanner and remover today — completely free.

Download free antivirus

Get it for iOS, Android, PC

Install free antivirus

Get it for PC, Mac, iOS

Download free antivirus

Get it for Android, iOS, Mac

Install free protection

Get it for Mac, PC, Android

FAQs

Are there any free virus scans?

There are plenty of free virus scans available, but choosing one from a reputable provider like Avast ensures you get comprehensive protection, and helps you avoid falling for fake virus warnings. Avast's free virus scan not only detects and blocks viruses and other malware but also removes them automatically, providing security both online and offline.

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

Get free antivirus for Windows for Windows
Get free free antivirus for Mac
Get free free antivirus for Android
Get free free antivirus for iOS

Should I run a virus scan on Android or iOS 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 phone may be vulnerable to viruses, as well as your Mac.

You need to cover everything from Androids like a Samsung to iOS devices like an iPhone. A robust antivirus can also help protect you from phishing attacks and macro viruses. No matter what device you use, removing adware and protecting against ransomware is important.

Is Windows Defender enough to protect my PC?

Windows Defender lacks many essential features that other free antivirus security solutions provide, such as offline protection and comprehensive anti-phishing defenses. Instead of relying on Windows virus scans, use a professional free virus scanner and remover like Avast Free Antivirus to perform malware checks and keep your data safe.

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 > Clean up computer and Chrome will scan your computer for malicious programs.

But beware that Chrome’s virus scanner works only on the Windows version of Chrome, and that Chrome’s built-in tools and security and privacy extensions only provide limited protection against browser-based threats.

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.

Other Tools

Helpful links

System requirements

All devices require an internet connection for automatic security and program updates.

PC with Windows 11, 10, 8.1, 8 or 7(both the 32 and 64-bit versions, excluding Starter and RT editions), 1 GB RAM and 2 GB of hard disk space, ARM chips Windows 11 only.

Mac running macOS 10.14 (Mojave) or later, 64-bit Intel or ARM processor, and 1 GB of free disk space.

Windows 10 compatible

Free Virus Scan and Removal Tool

Our best free virus scanner and virus cleaner

Our best free virus scanner and virus cleaner

Advantages of using Avast’s free virus protection

Trusted by third-party virus removal experts

Award-winning virus protection

Over 400 million users rely on our virus detector

Gina L.

Robin E.

Roy F.

Get free virus protection for Android, iPhone, & Mac

Start your free virus scan

Reasons to use our virus scanner

Reasons to use our virus scanner

Download our free virus scanner and remover

FAQs

Are there any free virus scans?

Should I run a virus scan on Android or iOS devices, too?

Is Windows Defender enough to protect my PC?

Does Google Chrome scan for viruses?

What is a computer virus?

Other Tools

Helpful links

System requirements

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