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Free Adware Scanner and Cleaner Tool

Put an end to adware. Avast Free Antivirus scans and removes adware currently on your device, and stops future adware and other types of threats. Best of all, it's 100% free and easy to use.

People love Avast Free Antivirus

6207 people rated us 4.7/5

Our best free adware scanner and adware removal tool

Avast finds and deletes adware faster and more thoroughly than any other adware scanner and cleaner on the market.

Avast Free Antivirus comes with many advantages:

We’ve packed the world’s largest threat-detection network and machine-learning malware protection into a single, lightweight malware scan and removal tool that won’t slow down your PC. And did we mention, it’s 100% free?

We’re the talk of the town

There’s a reason the pros trust Avast to keep them adware-free: we’re known worldwide for being the best at what we do.


An adware blocker trusted by over 400 million users

But don’t just take our word for it.

Protect your mobile and Mac too

Adware doesn’t care what device you use —  it wants to show you ads on all of them. That’s why everywhere adware goes, we’re there too.

For your Mac, we have free Avast Security for Mac, which improves your Mac’s impressive built-in security with specialized protection against threats of all kinds. We also scan your wireless network to ensure nothing sneaks in without your knowledge.

For your favorite Android devices, we have another free solution: Avast Mobile Security for Android. Give your phone the same adware-stopping power your PC enjoys… plus a few tools to boost your battery life and find your device if it ever gets lost.

Download our free adware scanner and remover

If you’re looking for the best way to stop adware on all your devices, you’ve found it with Avast Free Antivirus. And if you’re looking for a better price… you won’t find a better deal than free.


How can I get rid of adware?

There’s no better way to clear your system of adware than a powerful antivirus like Avast. Not only will it scan your device for adware and remove it, but it will also block it in the future.


Is adware a virus?

Technically, no. A virus self-propagates and spreads, while adware just bombards you with advertisements. Instead, we’d classify adware as “malware” — which is an umbrella term that encompasses all kinds of threats, including adware and viruses.

Does adware slow down my computer?

Absolutely! Adware bogs down your computer by forcing it to use it’s processing power and RAM on loading and displaying ads, rather than on the processes and programs you actually care about. If it gets bad enough, adware could slow your computer down to a crawl. Junkware — unwanted preinstalled applications — can have a similar effect. Fortunately, we can show you all kinds of ways to speed up your PC, including junk removal.

System requirements

We’re not demanding. All you need is a PC with Windows 10, 8.1, 8 or 7*, 1 GB RAM 
and 2 GB of hard disk space. And that’s it.

* Both the 32- and 64-bit versions, excluding Starter and RT editions.

Windows 10 compatible

Get free threat protection for your iPhone with Avast Mobile Security


Get free adware protection for PC with Avast Free Antivirus


Get free adware protection for Mac with Avast Security


Get free adware protection for Android with Avast Mobile Security