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Get comprehensive virus protection and removal now with Avast Free Antivirus. Avast’s powerful virus scanner detects and removes existing threats and helps prevent future infections. And it’s 100% free and easy to use.
Powerful virus scanner
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Trusted by over 400 million users
Award-winning protection
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.
Scans for and removes existing viruses and is constantly updated to defend against new threats.
Allows you to send suspicious files to the cloud for analysis, then receive patches as needed.
Alerts you immediately if unusual app behavior is detected that may indicate an app threat.
Scans files for viruses and PUPs to identify and alert you of malicious threats before you open them.
Helps protect your device even while your system is off, to safely remove viruses and other malware.
Isolates harmful files from the rest of your operating system to keep your device cleaner and safer.
Scans for and removes existing viruses and is constantly updated to defend against new threats.
Allows you to send suspicious files to the cloud for analysis, then receive patches as needed.
Alerts you immediately if unusual app behavior is detected that may indicate an app threat.
Scans files for viruses and PUPs to identify and alert you of malicious threats before you open them.
Helps protect your device even while your system is off, to safely remove viruses and other malware.
Isolates harmful files from the rest of your operating system to keep your device cleaner and safer.
Avast 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:
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.
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 Free Antivirus — 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.
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