The best free antivirus just got better

Free security has never been so lightweight, intuitive, and powerful.

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What’s new?

We've raised the bar on security again, with more intelligent features that makes threat-detection faster and more automation for advanced users - all within a seamless, intuitive interface.

Avast threat detection
Deeper malware protection
Uninterrupted gameplay
Fewer clicks
Avast mobile protection

On the move?
We can keep up

Your phone is your bank, office and arcade. Protect yourself with our leading mobile apps, so you can pay securely, email privately, and free up the space you need.


Go ahead, get down to business

Our world-class security scales to your business — whatever its size, network or devices. And it's cloud-based and flexible, so you can stay focused on your endgame and leave the security to us.


Better protection for all — thanks to you

We stop every single unknown file and analyze it for malicious activity before it gets to you. Each of the 400 million devices running Avast acts as a sensor that feeds our threat-detection engines to create fixes in real-time. With their help, we stop over 76 million attacks every day.

When you join Avast, you're growing that network and making the internet a safer place.

Snapshot of real threat data

Award winning protection, whatever you choose

All our security products are fast, light and pack powerful features to give you the best protection that's easy to use and won't slow down your PC.

Your protection,
your way

Avast Free Antivirus Avast Pro Antivirus Avast Internet Security Avast Premier
Free Antivirus Essential
Pro Antivirus Expert
Internet Security Advanced
Premier Complete
FREE DOWNLOAD Download Download Download
Block viruses and other malware Detect viruses, ransomware, and other threats in real-time. yes yes yes yes
Scan for Wi-Fi security weaknesses Expose intruders and security weaknesses in your network. yes yes yes yes
Secure your passwords Lock your passwords in our vault and log in to sites with 1 click. yes yes yes yes
Avoid fake sites for safer shopping Stop criminals from stealing your passwords and banking info.   yes yes yes
Safely run suspicious apps Sandbox any app to avoid affecting the rest of your PC.   yes yes yes
Block hackers with advanced firewall Stop hackers from sneaking onto your PC to steal your data.     yes yes
Block annoying spam and phishing emails* Stop annoying junk mail for a safer, cleaner inbox.     yes yes
NEWGet an extra layer of ransomware security Keep personal photos and files safe from unwanted changes.     yes yes
Permanently shred sensitive files Securely delete files to ensure that no one recovers them.       yes
Automatically update apps Reduce security risks by keeping your other apps up-to-date.       yes
* Anti-spam is available as a separate, free download. FREE DOWNLOAD


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Compatible with Windows 10, 8.1, 8, 7, Vista, XP SP3

We don’t do this for the acclaim

We do this because we understand the importance of what we're protecting.
But don’t just take our word for it.

The most downloaded software

The best-selling security software

Antivirus with the lowest impact on PC performance

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