Avast finds and removes viruses faster, more thoroughly, and more accurately than any other virus scanner.
We don’t just detect and delete existing viruses — we’ll stop them from infecting you again.
You’ll never be caught off-guard by newer threats: Avast updates itself hundreds of times a day to ensure your protection is cutting-edge.
Online security doesn’t begin and end with viruses. We also protect your PC from bad browser extensions, outdated software, and other common risks.
After rigorously testing 18 of the world's most popular antiviruses, independent test lab AV-Comparatives has named Avast Free Antivirus Product of the Year 2018.
We’ve packed the world’s largest threat-detection network and machine-learning malware protection into a single, lightweight malware scan and removal tool that won’t slow down your PC. And did we mention, it’s 100% free?
We’re really good at what we do, and the pros know it. That’s why we’re rolling in accolades, recommendations, and five-star reviews.
But don’t just take our word for it.
The UI for your software - amazing. Great work over the years. Can't say enough good things!
Thank you, Avast, for the excellent work you do. I run your antivirus software on both my Mac OS X and my Windows machines. You have the best products on the market, period.
I’ve been using Avast for over a year and have found it one of the best free software protection devices on market.
We also protect every device that needs virus security, including your Mac and mobile device (which are in danger of infection, too).
We’ve brought the same reliable scans and real-time protection PC users enjoy over to Mac with our free Avast Security for Mac. We then take things one step further and secure your network, guarding your home Wi-Fi network against intruders and threats.
For your favorite Android devices, we have another free solution: Avast Mobile Security for Android. Scan for viruses, get rid of them, and protect yourself from future infection. But it doesn’t stop there — we can also protect your photos, optimize your phone’s battery, help you find your device if it gets lost, and more.
There’s no better way to find and destroy viruses than Avast Free Antivirus. And at the low, low price of $0, it’d be costlier not to have it protecting you.