The best free antivirus — powered by you

Lightweight and intuitive protection powered by a community over 400 million strong.
This is next-gen cybersecurity for all.

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What’s new

What’s yours is yours — and we’ll keep it that way. Ransomware Shield is a new added level of protection that intelligently detects and blocks attackers by ensuring your files cannot be encrypted without your permission.

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Simple on the outside, smart on the inside

Avast Free Antivirus raises the bar on security with real-time protection, intelligent threat-detection, and added security for your network, passwords, and browser. Easy to install and easy to use, no other free antivirus comes close.

PROTECT YOUR PC
Intelligent Antivirus
Blocks malware, spyware, ransomware, phishing — your next-gen protection against cyber threats.
Behavior Shield
Stops suspicious behavior as soon as it starts — your zero-second protection against unknown threats.
Smart Scan
Detects unsafe settings and passwords, outdated apps and sketchy add-ons — your security gap sentinel.
Wi-Fi Inspector
Automatically finds weaknesses and sniffs out unwanted piggybackers — your home Wi-Fi network watchdog.
Browser Cleanup
Removes unwanted toolbars and privacy-endangering add-ons — your browser bloatware blaster.
Game Mode
Holds up notifications during your gaming session — your ‘most valuable’ playmate.
CyberCapture
Analyzes suspicious files automatically, and pushes a cure to everyone if they’re a threat— your personal cyber doctor.
Passwords
Manages all your accounts with one single, secure password — your trusted, reliable key holder.

Business security with teeth

Stay focused on your endgame and leave your endpoint security to us. On-premise or cloud-based, we scale to your business — whatever its size, network, or devices.

PROTECT YOUR BUSINESS
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.

PROTECT YOUR MOBILE

Next-gen cybersecurity for all

In the face of increasingly complex threats, cybersecurity must be faster and more powerful than ever. Stopping cyberattacks in real-time is what we do.

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We are 400 million. Be our “plus one”

Our 400 million users are the 400 million reasons why we lead the digital security pack. Each Avast-loaded device is a source of real-time intelligence about new and current threats. That’s how we stop over 100 million of them every day. By joining Avast, you help to make that network even stronger.

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
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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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Free 30-day trial

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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

Official download partner

Join the world’s largest network.
We are Avast. We are next-gen cybersecurity.

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