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Download free antivirus software — rely on 30+ years of cybersecurity experience

Stay protected against viruses and malware with Avast Free Antivirus software. Avast defends the security and privacy of over 435 million users worldwide.
Also available for Mac, Android, and iOS
Also available for PC, Android, and iOS
Also available for PC, Mac, and iOS
Also available for PC, Mac, and Android
2022 Best Protection
2022 Top Rated
Safe browsing and emailing
Home Wi-Fi network security
Easy to install, effortless to use
30+ years of cybersecurity experience
Avast Free Antivirus
World-class virus protection for any device
30+ years of experience helped us create an easy-to-use antivirus software that features the industry’s largest threat-detection network, machine-learning virus protection, and home network security that won’t slow down your PC, Mac, Android, or iPhone.

6 layers of antivirus security

Sometimes your operating system’s built-in protection isn’t enough. Adding Avast’s free antivirus software lets you run automatic smart scans on software, files, and apps to find cracks where malware can slip in, plus send suspicious files for analysis in the cloud, get threat alerts, and more.
Smart Scan
Scans your device for hard-to-find vulnerabilities in hidden places.
CyberCapture
Automatically sends suspicious files for analysis in the Cloud, then pushes a cure to Avast users if needed.
Behavior Shield
Alerts you immediately if any of your apps start behaving suspiciously.
File Shield
Alerts you to any suspicious files — before you open them.
Rescue Disk
Scans your device while your system’s switched off, so you can safely remove malware.
Quarantine
Stores potentially harmful files and completely isolates them from the rest of your operating system.

Avast Free Antivirus offers you even more

Avast Free Antivirus is more than just an antivirus software. It also includes these privacy and security features:
Connect safely and with confidence, even on unsecured or public Wi-Fi networks. Block hackers and intruders from piggybacking on your network and stop them from accessing your sensitive, personal files.
Network Inspector
Connect safely and with confidence, even on unsecured or public Wi-Fi networks. Block hackers and intruders from piggybacking on your network and stop them from accessing your sensitive, personal files.
Firewall
Our intelligent firewall monitors all network traffic between your PC and the outside world and blocks malicious intrusions.
Stay safe when browsing, emailing, or working online. Block malicious websites & unsafe downloads, and stop your device from being hijacked and made part of a botnet.
Botnet Shield
Protect your device against malware that allows hackers to control it and turn it into part of a bot network. Bot networks are used to send spam, steal data, distribute ransomware, commit fraud, and other potentially illegal activities.
Web Shield
Web Shield protects users from visiting a malicious website by blocking the websites when it detects any kind of malicious code or malware on sites.
Mail Shield
Mail Shield alerts you to potentially malicious email attachment before you click on them.
Stop hackers from accessing, changing, or locking your personal files then holding you to ransom.
Ransomware Shield
Keep your information safe. Don't let your personal photos, files, and documents become hostage to ransomware — automatically prevent untrusted applications from modifying, deleting, or encrypting them.
Get an alert if any passwords linked to your email account have been compromised.
Hack Alerts
Keep your email accounts and their passwords secure. If any of your email passwords have been part of a leak or hack, you’ll get an alert, allowing you to re-secure your account immediately.

Over 400 million users trust us with their digital lives

“The well-known security specialist Avast received a total of three awards for its outstanding performance...shows how reliably and securely the security software renders its service...”
Awarded Top‑Rated Product 2022 by AV‑Comparatives
Easy to install, effortless to use
Avast’s antivirus software scans for security and performance issues and helps you to fix them instantly. It also protects you in real time by analyzing unknown files long before they reach your device. And it’s free — so give it a try.
Free download Free download Free download Free download
How to install
Get protected right away by following these 3 easy steps:
Step 1
1. Download
Click here to download.
Step 1
1. Download
Click here to download.
Step 1
1. Download
Click here to download.
Step 1
1. Download
Click here to download.
Step 2
2. Open the file
Open the downloaded file and approve the installation.
Step 3
3. Install the file
Run the installer and follow the simple instructions.
System requirements
All devices require an internet connection for automatic security and program updates.
PC with Windows 11, 10, 8.1, 8, or 7 (both the 32 and 64-bit versions, excluding Starter and RT editions), 1 GB RAM and 2 GB of hard disk space.
Mac running macOS 10.12 (Sierra) or later.
Android phone or tablet running operating system Google Android 6.0 (Marshmallow, API 23) or higher.
iPhone or iPad running iOS 12.0 or higher.
Avast Free Antivirus
Download award-winning free antivirus
Also available for Mac, Android, and iOS
Also available for PC, Android, and iOS
Also available for PC, Mac, and iOS
Also available for PC, Mac, and Android

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Complete installation by clicking your downloaded file below and following the instructions.
Complete installation by clicking your downloaded file and following the instructions.
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Need Help? Please call 855-745-3255
Click this file to start installing Avast.
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Installation of the antivirus is almost complete!
Complete installation by clicking your downloaded file below and following the instructions.
Complete installation by clicking your downloaded file and following the instructions.
Initiating download...
Note: If your download did not start automatically, please click here.
Need Help? Please call 855-745-3255
Click this file to start installing Avast.