Download free antivirus software — rely on 30+ years of cybersecurity experience
Stay protected against viruses and malware with Avast Free Antivirus. Avast defends the security and privacy of over 435 million users worldwide.
World-class virus protection for any device
6 layers of antivirus security
Sometimes your operating system’s built-in protection isn’t enough. Adding Avast Free Antivirus lets you run automatic smart scans on software, files, and apps to find cracks where malware can slip in, plus send suspicious files for analysis in the cloud, get threat alerts, and more.
Avast Free Antivirus is more than just an antivirus. It also includes these privacy and security features:
Over 435 million users worldwide trust Avast
Easy to install,
effortless to use
How to install
2. Open the file
3. Install the file
All devices require an internet connection for automatic security and program updates.
Is there a 100% free antivirus?
Yes, there are various free antivirus software, although not all of them will provide you with full protection. Avast Free Antivirus is completely free and offers all the security you need.
What does antivirus software do and how does it work?
Trusted by over 435 million users around the world, Avast uses advanced machine learning techniques to protect against ransomware attacks and other emerging threats. Avast Free Antivirus software detects, blocks, and removes all types of malware: viruses, adware, spyware, Trojans, and more. You’ll also get security for your Wi-Fi network and real-time defense against phishing attacks, unsafe websites, and other threats to your devices.
Is Avast Antivirus really free?
Avast Free Antivirus really is free — you’ll never need to pay for it and it’ll provide you with essential online security and protection. If you’re looking for more security and privacy features, our Avast Premium Security software is the right product for you.
Will Avast Free Antivirus software affect the performance of my device?
Avast Free Antivirus software keeps your PC safe in real time without slowing it down. Get world-class protection against malware, phishing attacks, Wi-Fi threats, and more with our advanced cybersecurity tool that’s both comprehensive and light on your system’s resources.
Looking for a performance boost? Speed up your PC and get rid of unnecessary files with Avast Cleanup Premium, or protect and optimize your PC all at the same time with Avast One.
How do I detect and remove viruses and other malware?
Avast’s free antivirus software detects and blocks all types of malware in real time to prevent them from infecting your computer. At the same time, it scans your PC to remove viruses and other malware automatically before they can do real damage.
If you’re up for a challenge, you can also try to remove viruses and malware the old fashioned way.
Why is Avast one of the best free antivirus solutions?
Avast’s free antivirus software combines cutting-edge, AI-driven cybersecurity with a massive threat-detection network of over 435 million users that lets us protect our entire community in real time against online threats whenever they appear.
Our industry-leading antivirus engine is just one of the many reasons why Avast Free Antivirus consistently earns high praise and top awards from PCMag, AV-Comparatives, AV-Test, and other independent experts. We have one of the best antivirus software solutions available, because we have the right antivirus protection for all your needs.
Why is Avast Free Antivirus even better than Windows Defender?
Now known as Microsoft Defender, Windows Defender isn’t enough to match leading third-party PC antivirus programs. While it’ll keep your computer relatively safe against most types of malware, its anti-phishing protection is limited to Microsoft Edge — so you’ll need Avast Free Antivirus to protect you on other browsers like Chrome and Firefox. Microsoft Defender also doesn’t score quite as highly with independent testing labs like AV-Comparatives. For comprehensive threat protection on your PC, go with Avast — the world’s most trusted antivirus.
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