Download Avast Free Antivirus

The world's most trusted free antivirus. AI-powered protection for all your devices — completely free, forever.

All Platforms

Available on Every Device

Avast protects Windows PCs, Macs, Android phones, and iPhones with the same award-winning security engine.

Windows

Full protection for Windows 7, 8, 10, and 11 (32-bit and 64-bit). Includes all six shields, banking mode, and performance tools.

Download for Windows

macOS

Comprehensive security for macOS 10.14 Mojave and later. Protects against Mac-specific threats, phishing, and network attacks.

Download for Mac

Android

Antivirus, Wi-Fi scanner, app locker, and photo vault for Android smartphones and tablets. Keep your mobile data secure.

Download for Android

Installation

Get Started in 3 Easy Steps

Download the Installer

Click the download button for your operating system. The installer file is small and downloads in seconds on any connection speed.

Run the Installer

Open the downloaded file and click "Install." Avast will walk you through a simple setup process. No technical knowledge required.

You're Protected

Avast immediately begins scanning your system and protecting you in real time. Updates happen automatically in the background.

What's Included Free

Full Protection at Zero Cost

Avast Free Antivirus is one of the most comprehensive free security tools available. No credit card, no trial period, no hidden fees — just real protection.

Real-time antivirus and malware scanning
AI-powered scam and phishing detection
Wi-Fi network vulnerability inspector
Ransomware Shield for your files and photos
Mail Shield for email attachment scanning
Hack Alerts for data breach monitoring
Smart Scan to find hidden vulnerabilities
Automatic virus definition updates

System Requirements

Compatible with Your Device

Windows Requirements

Windows 7 SP1, 8, 8.1, 10, 11 (32/64-bit). 2 GB RAM minimum, 2.5 GB free disk space. Internet connection for updates.

macOS Requirements

macOS 10.14 (Mojave) or later. Apple Silicon (M1/M2/M3) and Intel processors supported. 512 MB RAM, 750 MB free disk space.

Android Requirements

Android 8.0 (Oreo) or later. Compatible with smartphones and tablets. Approximately 50 MB installation size.