Free Malware Scanner & Malware Removal Tool

Powerful malware scanner

Shop and bank securely

Trusted by over 400 million users

Award-winning protection

Scan and remove malware for free

We’ve packed the world’s largest threat-detection network and machine-learning malware protection into a single, lightweight malware scan and removal tool. Get Avast One for powerful anti-malware security that won’t slow down your PC — 100% free.

DOWNLOAD FREE ANTI-MALWARE

Get it for Android, iOS, Mac

DOWNLOAD FREE ANTI-MALWARE

Get it for iOS, Android, PC

INSTALL FREE PROTECTION

Get it for Mac, PC, Android

INSTALL FREE ANTI-MALWARE

Get it for PC, Mac, iOS

The benefits of Avast One’s malware scanner and remover

Smart Scan

Scans for and removes existing malware — constantly updated to block new and emerging threats.

Quarantine

Isolates harmful files from the rest of your computer to keep your device free of malware and other threats.

File Shield

Monitors apps and files for suspicious behavior that might indicate malware or other threats.

Boot-time scan

Detects and quarantines malware before your operating system accidentally loads infected files.

Web Shield

Blocks malicious scripts and dangerous websites from loading while you browse online.

Secure connection

Includes a VPN (virtual private network) to help keep your internet data private while browsing.

Smart Scan

Scans for and removes existing malware — constantly updated to block new and emerging threats.

Quarantine

Isolates harmful files from the rest of your computer to keep your device free of malware and other threats.

File Shield

Monitors apps and files for suspicious behavior that might indicate malware or other threats.

Boot-time scan

Detects and quarantines malware before your operating system accidentally loads infected files.

Web Shield

Blocks malicious scripts and dangerous websites from loading while you browse online.

Secure connection

Includes a VPN (virtual private network) to help keep your internet data private while browsing.

Stay safe with award-winning malware protection

Avast One is powered by the same industry-leading antivirus engine that's been winning awards for years. Security test labs and industry experts agree that Avast's cybersecurity protection is among the best in the world.

Avast One was awarded five stars from TechRadar and took home the coveted 2021 Editors’ Choice award from PCMag. Our trophy case is full of awards from industry-respected sources, including:

AV-TEST: Top Product, AV Test Certified, 2022
TechRadar: 5 stars, 2021
PCMag: Editors’ Choice, 2021
AV Comparatives: Top Rated Product Award, 2020

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 or iOS phone or tablet? Don’t panic. We’ve got you covered there, too.

MAC

ANDROID

IPHONE/IPAD

Our real-time antivirus for Mac scans for, removes, and stops all kinds of malware — from viruses to spyware to ransomware. 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 security for mobile? Avast’s anti-malware protection for Android brings the power of our award-winning cybersecurity apps directly to your phone. Remove malware, secure your Wi-Fi connection, and protect against all kinds of malicious software and other threats.

Get a powerful iOS security app to protect your iPhone and iPad against malware and other online threats. Block malicious files, help prevent hacking, and browse the web securely with Avast.

Download our free malware cleaner

Avast One removes hidden malware, defends against future threats, and protects against nasty viruses, spyware, ransomware, and more. Get a powerful malware scanner and removal tool today — 100% free.

DOWNLOAD FREE ANTI-MALWARE

Get it for Android, iOS, Mac

DOWNLOAD FREE ANTI-MALWARE

Get it for iOS, Android, PC

INSTALL FREE PROTECTION

Get it for Mac, PC, Android

INSTALL FREE ANTI-MALWARE

Get it for PC, Mac, iOS

FAQs

What is the best free malware removal software?

Avast’s antivirus solution regularly receives top marks in lab testing, and it’s been named the best free antivirus software in a variety of product reviews, including winning AV-Comparatives' 2021 Outstanding Product Award. There are many free malware removal and antivirus options available, but few with the threat-detection capabilities of Avast.

Does Windows 10 have a malware scanner?

Free malware removal for Windows 10 comes pre-installed. But Windows Defender may not be enough to counter all threats to your system. For comprehensive security, use an ironclad tool like Avast One, which will defend against malware, protect you from spoofing and phishing attacks, and enhance your privacy with a built-in VPN.

How do I remove malware for free?

The easiest way to remove malware from your computer is to use a free virus removal tool like Avast One, which scans for and removes existing malware, as well as prevents future infections. Avast One is compatible with all devices, so you can scan for, detect, and remove malware on Mac, iPhone, and Android too.

How do I know if I have malware?

Common symptoms of malware include an overheating computer, slow speeds, frequent crashes, adware, loss of disk space, and the sudden appearance of unknown programs. Malware may also redirect you to suspicious websites. If your phone’s been hacked, you’ll likely notice data-usage spikes and app crashes. If you think you may have malware, run an anti-malware scan to find out.

How can I get rid of malware on Chrome?

Use an antivirus tool to remove any malware from your computer or phone.
Reset your Chrome browser to its default settings, make sure you have the best security extensions for Google Chrome, and remove any Chrome extensions you don’t want or don’t trust.

If your Chrome browser continues to act buggy, switch to a dedicated privacy browser like Avast Secure Browser that features powerful built-in protection.

Can antivirus software remove malware?

Reliable antivirus software like Avast Free Antivirus features comprehensive anti-malware tools — trojan removers, rootkit scanners, anti-spyware tools — that will remove malware and block future infections in real-time.

Is anti-malware an antivirus?

There’s no real difference between quality antivirus software and anti-malware. Beyond computer viruses and worms, top-shelf security software needs to defend against a wide range of cyberthreats, including keyloggers, phishing, cracking, and other vulnerabilities that can be exploited. So while anti-malware is an antivirus, it’s also much more. And any antivirus worth its salt must be able to identify and block the array of today’s online threats.