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Get the world’s #1 antivirus for free.

Avast Free Antivirus protects all of your devices from the daily, constant threats to your digital life.

Avast Free Antivirus protects all of your devices from the daily, constant threats to your digital life.

You’re 200%+ more likely to be stolen from online than in person1

But not when you have Avast — we stop the attacks before they even start.

Trusted by over 400 million people

Yeah, that means you’re one of the few who isn’t using Avast yet — but don’t feel bad. Avast is free and won’t slow your device down. Installation only takes 45 seconds. See for yourself!

4.7 Stars

Over 5 Million Reviews

“I rarely ever give anything 5 stars, however I have been using Avast for years on all my devices, the free version works better than some of the software that I’ve have paid for in the past.”

- Matthew M.

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

Do Not Disturb Mode blocks distracting popups whether you’re gaming, watching movies, or presenting in fullscreen.(Windows version only)

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.(Windows version only)

Avast Free Antivirus

Avast Security for Mac

Avast Mobile Security for Android

Mobile Security for iOS

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

Free for all of your devices.

1 US Bureau of Justice Statistics