Powerful, free anti-malware protection

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?

Avast One lets you:

Detect, remove, and block malware and viruses

Stop viruses, spyware, ransomware, and other malware threats with real-time antivirus protection. Our industry-leading malware-detection technology keeps you protected 24/7.

Stay protected against even the newest threats

Whenever a new threat is detected anywhere in our network of over 400 million users, we push anti-malware updates to you automatically — keeping you safe against new and emerging online security risks.

Find browser threats and other vulnerabilities

Detect not only malware, but suspicious browser add-ons, outdated software, and other potential threats. Our AI-based global threat detection network always has your back, because you can never be too safe.

Protect your privacy & optimize your devices

Avast One doesn’t just fight malware, it also comes with built-in privacy and performance features to upgrade your digital lifestyle. Encrypt your data with a VPN, tune up your devices, and get much more.

Avast One is filled with other free features, too, including a Do Not Disturb Mode to block unwanted distractions, a smart Behavior Shield that automatically detects suspicious activity, and a whole lot more — all 100% free.

DOWNLOAD FREE ANTI-MALWARE

Get it for iOS, Android, PC

INSTALL FREE ANTI-MALWARE

Get it for PC, Mac, iOS

INSTALL FREE PROTECTION

Get it for Mac, PC, Android

DOWNLOAD FREE ANTI-MALWARE

Get it for Android, iOS, Mac

Stay safe with award-winning malware protection

We’re proud to have secured the coveted 2021 Editors’ Choice award from PCMag. “The new Avast One Essential incorporates all the powerful virus-fighting technology that’s made Avast famous.”

Avast One is powered by the same world-class antivirus engine that’s been winning awards for years. Independent security testing labs and industry experts agree that Avast’s cybersecurity protection is among the best in the world.

PC Mag: Editors’ Choice, 2021

TechRadar: 5 stars, 2021

AV-TEST: Top Product, AV Test Certified, 2021

AV Comparatives: Top Rated Product Award, 2020

AV Comparatives: 2018 Product of the Year

AV Comparatives: Advanced+ in malware protection and removal, 2018

Anti-malware protection trusted by over 400 million users

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!

Ryan R.

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.

Eric S.

I’ve been using Avast for over a year and have found it one of the best free software protection devices on market.

Daryl C.

Get rid of malware from your Mac or mobile, too

Think your Mac is infected? Afraid you’ve downloaded malware to your Android phone or tablet?
Don’t panic. We’ve got you covered there, too.

Our real-time antivirus for Mac scans for, removes, and stops all kinds of malware — from viruses to spyware to ransomware — as well as a wide range of other online threats to keep your Mac safe. Defend against phishing attacks and avoid malicious websites with the protection of one of the world’s largest threat-detection networks.

Looking for free anti-malware for mobile? Avast’s antivirus protection for Android brings all the power of our award-winning cybersecurity apps directly to your phone. Scan for malware and remove it, secure your Wi-Fi connection, and protect against all sorts of malicious software and other internet threats.