Avast Free Antivirus

World's most trusted antivirus, FREE for all — including students and teachers.

  • After 25 years in business we protect more than 210 million devices
  • More than 3,800 American schools use us to protect their networks and students
  • Top rated on Amazon.com and Download.com

Our FREE solution, designed to give more than just minimum protection, is perfect for anyone on a tight budget.

Award-winning antivirus engine

Our award-winning scanning engine protects against viruses and spyware, with lowest impact on your computer's performance.

Software Updater maintenance tool

Shows you an overview of all your outdated software applications, and prompts you to update your security vulnerabilities.

Streaming virus database updates

Keeps your protection up to date in real-time with more than 200 daily virus updates from the Avast Virus Lab cloud.

Browser Cleanup, for tidy web surfing

This new tool serves as a maintenance center where you can delete annoying toolbars and plug-ins from your browser.

New user-friendly interface

The Avast UI has been redesigned to keep up with modern navigation styles. Geeks, don't worry, it's still customizable.

Enhanced touch screen navigation

Our new user interface, with large easy-to-push buttons, simplifies using Avast on your touch-based Windows 8 devices.

Boot-time malware scanning

Scans your computer for infections before the OS starts and before any viruses hidden beneath it can be activated.

Intelligent scanner for faster scans

Reduces the number of required file scans by using a 'white list' of safe files. These files are only scanned if they change.