Need to protect your PC with Windows?

Avast is the most-trusted antivirus brand globally. We protect over 200 million PCs, Macs, and Android devices - more than any other brand. Download your Avast today.

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Which level of protection suits you best?


Avast Free Antivirus


Avast Internet Security


Avast Premier

Download Free Antivirus if you want just essential protection. But if you want security against threats such as money fraud or targeted hacker attacks, try Internet Security or Premier.

Avast Free Antivirus Avast Internet Security Avast Premier
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Free 30-day trial


Free 30-day trial

Intelligent antivirus & anti-malware Detects threats no one has even heard of yet. yes yes yes yes
Home Network Security Scan your home network for weak spots. yes yes yes yes
Browser Cleanup Get rid of annoying browser add-ons. yes yes yes yes
Pay & bank online. Safely. Prevent your logins and passwords from theft.   yes yes yes
Anti-hijack protection Log in to your real banking site, not a fake one.   yes yes yes
Silent Firewall Shield your computer from hackers.     yes yes
Anti-spam Keeping your inbox junk-free feels good.     yes yes
Automatic patching of security holes Reduces the risk of your apps getting hacked. A lot.       yes
Prevent misuse of your private data Deleting is not enough. Start shredding instead!       yes
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Free 30-day trial


Free 30-day trial


The most popular antivirus family!

Millions and millions of desktop and mobile devices protected

Now that we protect around 200 million active devices on all inhabited continents, we are thinking of how to expand to Antarctica. Negotiations with local penguins are underway.

Over a quarter century of computer security that works

In 2013, Avast celebrated 25 years of success. In all that we do, we’re committed to earning our customers’ satisfaction and trust. And our customers’ loyalty gives us motivation to innovate and drive security to new levels. Should Avast ever not meet your expectations, remember that all our products and services come with a 30-day, no-question, money-back guarantee.

Experts frequently certify and award us

We hate bragging, but we can see you insist! We get awarded and certified often, by numerous independent, industry-related organizations and testing agencies. They praise us for the virus detection capabilities of our software, as well as for not slowing down your PC.