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Free Adware Scanner and Cleaner Tool

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

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2021
Editors' choice
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2021
Editor's choice
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2021
Top Rated
Product

Our best free adware scanner and adware removal tool

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

Avast One 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?

Stay safe with top-ranked adware protection

Renowned by experts for its powerful security features, Avast One’s “numerous excellent lab scores” are a major reason why PCMag named it a 2021 Editors’ Choice — describing Avast One as “a partner to keep you, your devices, and your data safe and happy.”

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Meanwhile, TechRadar awarded Avast One a full 5 stars for its comprehensive anti-malware protection and prevention: “Avast One doesn’t just do a good job of detecting malware: it detects and blocks access to malicious websites, reducing the chance you’ll get infected in the first place.”

Avast has been recognized for years with countless prestigious awards:

  • PC-mag_logo2

    PC Mag: Editors’ Choice, 2021

  • tech-rada-logo-27x27

    TechRadar: 5 stars, 2021

  • AV_test-logo2

    AV-TEST: Top Product, AV Test Certified, 2021

  • award-av-comparative-plkaceholder

    AV Comparatives: Top Rated Product Award, 2020

  • award-av-comparative-plkaceholder

    AV Comparatives: 2018 Product of the Year

  • award-av-comparative-plkaceholder

    AV Comparatives: Advanced+ in malware protection and removal, 2018

An adware blocker trusted by over 400 million users

But don’t just take our word for it.

Protect your Mac and mobile too

Adware doesn’t care what device you use — it wants to bombard you with ads on all of them.
That’s why everywhere adware goes, Avast is there to block it.

Strengthen your Mac’s built-in security with dedicated protection against viruses and malicious threats of all kinds, including adware. Avast’s Mac security software defends and optimizes your Apple computer and is powered by one of the world’s most powerful threat-detection networks.

Android devices also need enhanced security and privacy protection to defend against malware and the array of other online threats. Avast’s Android antivirus protection helps secure your Wi-Fi while giving your phone the same adware-blocking, anti-malware power your PC enjoys.

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 One. And if you’re looking for a better price… you won’t find a better deal than free.

FAQs

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 11, 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

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Editor's
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Get free adware protection for PC with Avast One

FREE DOWNLOAD
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Get free adware protection for Mac with Avast One

FREE DOWNLOAD
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Editor's
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Get free adware protection for Android with Avast One

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Get free adware protection for your iPhone with Avast One

FREE INSTALL