We support browsers, not dinosaurs. Please update your browser if you want to see the content of this webpage correctly.

Get the world’s #1 antivirus for free.

Avast Free Antivirus protects your computer against viruses and malware, and it helps you protect your home network against intruders.

Block and remove spyware with Avast

Avast Free Antivirus includes anti-spyware protection to keep your personal information, banking details and online activity private.

Avast ransomware protection

Offering full malware protection, Avast Free Antivirus analyses unknown files to detect and block ransomware attacks before they affect you.

Real-time malware detection from Avast

Avast Free Antivirus works quietly in the background, analyzing unknown files and applications in real time, to block malware on your PC.

Powerful protection against WannaCry

Intelligent, real-time protection at no cost – Avast Free Antivirus helps you stay safe from nasty ransomware attacks like WannaCry.

Best free antivirus for Windows 10

Avast Free Antivirus is light, smart and powerful. Our world leading antivirus detects and stops all types of malware on your Windows 10 PC.

Best free antivirus for Windows 7

Avast Free Antivirus is light, smart and powerful. Our world leading antivirus detects and stops all types of malware on your Windows 7 PC.

Best free antivirus for Windows 8

Avast Free Antivirus is light, smart and powerful. Our world leading antivirus detects and stops all types of malware on your Windows 8 PC.

FREE DOWNLOAD
Get it for free! Free download

What’s inside the latest version?

A beautifully intuitive interface, advanced application protection, a new passive mode for running multiple security products in parallel — and a little something for you gamers and movie buffs.

Designed for effortless security

Just a click of our fresh, new, easy-to-use interface checks everything from your passwords to your home network security.

Game or movie time.
Now uninterrupted NEW

We’ve renamed Game Mode and taught it some new tricks. Now called Do Not Disturb Mode, it blocks distracting popups whether you’re gaming, watching movies, or presenting in fullscreen.

Introducing Behavior Shield

We don’t just check your applications for malware. We now keep an eye on their behavior to make sure they don’t suddenly go rogue.

Avast Free Antivirus

Fast, light and powerful free protection.
It’s just a click away