A good paid antivirus suite is a digital-protection jackknife, often bundling in parental controls, identity theft protection, a password manager, backup software, cloud storage, a firewall, a system optimizer and software for Mac, Android and iOS as well as Windows. But what if you just want Windows antivirus software without all of those pricey extras?
And what if you can't afford to pay for antivirus software? One of the best free antivirus programs might be exactly what you need. Free antivirus software used to be a step down from the paid software and involved trade-offs.
The protection wasn't as good and you'd either have to put up with ads filling your screen or with constant nags to upgrade to a paid program. That's all changed. One of the best antivirus makers, Kaspersky, offers a free version with the same excellent malware protections as its paid offerings. Its top rival, Bitdefender Antivirus Free Edition, has been officially discontinued, although Tom's Guide readers can still download it with this link.
A merger between the biggest names in free antivirus, Avast and AVG, created a combined malware-detection engine that's much better than the sum of its parts. Meanwhile, Microsoft's built-in antivirus software, Windows Defender, aka Microsoft Defender Antivirus, has gone from being a joke to being one of the best antivirus programs out there, free or paid. You can now get free antivirus protection that's as good as anything you pay for.
So here are the best free antivirus programs based on their protection, system impact, ease of use and extra features. Kaspersky Security Cloud Free 2.
Bitdefender Antivirus Free Edition 3. Windows Defender Antivirus 4. Avast Free Antivirus 5. Kaspersky Security Cloud Free Antivirus may be the best free antivirus program we've ever seen. It has excellent malware protection, a decent set of extra functions and features, and a system-performance impact so small that our computer actually sped up after we installed the program. Bitdefender Antivirus Free Edition has been officially discontinued, and we're not sure how long Tom's Guide readers can still download it.
It's the best "set it and forget it" free antivirus option. It's now one of the best antivirus programs altogether. You don't have to install or download it — it's already on your PC. If you want an unlimited password manager or a hardened web browser, Avast Free Antivirus might be for you. Its malware protection is much better than it once was, although its performance impact is fairly heavy.
Avast's stepsister AVG has the same malware-detection engine, but lacks Avast's full slate of useful extra features. But it does have a file shredder and system optimizer. We have to mention one program that's not antivirus software, but which we recommend anyway: Malwarebytes Free.
While antivirus tries to stop malware from infecting your machine, Malwarebytes functions as the cleanup crew, sweeping out less-harmful adware or potentially unwanted programs that the antivirus software ignores. It works well alongside any antivirus program. Kaspersky doesn't talk much about its free antivirus product, and you might have a hard time finding the free Kaspersky software download page on the company's website.
That's too bad, because Kaspersky Security Cloud Free is the best free antivirus product we've ever tested. We've never seen such a combination of excellent protection and extra features in a free antivirus program. It's got a bright, comprehensible interface, a lot of customization potential and Kaspersky's unbeatable malware protection.
The program also lets you schedule scans, and its performance impact was so small that it actually sped up our test machine a bit. Kaspersky's useful extra features include a file shredder, an on-screen keyboard and an email scanner.
The password manager and VPN service are fairly limited, however, unless you pay. Read our full Kaspersky Security Cloud Free review. Bitdefender has officially discontinued Antivirus Free Edition, and it will be supported only until June 30, We still love it and you can still get it , but proceed at your own risk.
Compared to premium paid antivirus programs that are big, heavy and loaded with extra bells and whistles, Bitdefender Antivirus Free Edition is like a '60's sports car, stripped to the essentials but still providing plenty of power. Bitdefender Antivirus Free Edition offers nothing but the basics.
There's no password manager, no gaming mode, no quick scans and no scan scheduling. You can manage the software from the program's System Tray icon, but you don't really need to interact with Bitdefender Antivirus Free Edition after its installation.
Yet Bitdefender Antivirus Free Edition has the excellent Bitdefender malware-detection engine, which sits just below Kaspersky and Norton in the lab-test rankings. It's the best free antivirus software if you want a security solution that you can set up and then forget about.
It's also perfect if you need to protect the computer of an elderly relative but don't have time to manage antivirus software from afar. Read our full Bitdefender Antivirus Free Edition review. Microsoft's built-in antivirus software is now a heavy hitter. While Windows Defender, aka Microsoft Defender Antivirus, doesn't quite beat Norton or Kaspersky in malware-protection lab tests, it comes out ahead of Avast, AVG and most other free antivirus products while operating almost entirely behind the scenes.
You won't be getting many extra features with Windows Defender itself, yet Windows 10 does have parental controls, a gaming mode and protections for its own Edge and Internet Explorer browsers.
There's no built-in VPN, but you also won't be bothered by pop-ups trying to upsell you to paid antivirus software. As for a password manager, there's a stealth one built into the Microsoft Authenticator app for Android and iOS that syncs with the Edge browser, as long as you're signed into your Microsoft account on all devices. We still recommend going for Kaspersky Security Cloud Free, which has even less of a system impact, better malware protection and more useful extras, but there's absolutely nothing wrong with using Windows Defender as your primary antivirus solution.
Read our full Windows Defender review. Avast Free Antivirus has the best assortment of extra goodies of any free antivirus program, including a hardened browser, a gaming mode, a Wi-Fi network scanner and a recently added ransomware shield.
Unfortunately, the unlimited password manager has been discontinued. The program is also very customizable, letting you tweak its appearance and functions to suit your style.
It even offers limited access to Avast's VPN service. However, Avast Free Antivirus caused a pretty heavy system load in our testing and its scans took a long time. It also kept nagging us to upgrade to Avast's paid antivirus protection, and played bait-and-switch with features that looked like they were free but weren't.
Most significant of all, the malware protection in Avast Free Antivirus is a peg down from Kaspersky's or Bitdefender's, whose free programs also bothered us less about paid upgrades and had lighter system loads.
Read our full Avast Free Antivirus review. AVG shares a decent, if unspectacular, malware-detection engine with its corporate sibling Avast while having a much lighter system-performance impact. While the latter is almost a free security suite with lots of bells and whistles, AVG AntiVirus Free is the quiet, neglected child that gets the hand-me-downs.
The good news is that AVG's wide range of customization options and its file shredder and system optimizer are still available, and its interface is open and easy to use.
Worst of all, given its middling malware detection and dearth of extra features, there's no convincing reason to choose AVG AntiVirus Free over the built-in and overall better Microsoft Defender.
Malwarebytes Free, formerly called Malwarebytes Anti-Malware, is not antivirus software. Instead, it's a very useful malware-removal tool. What's the difference? Unlike antivirus software, Malwarebytes Free can't prevent a PC from being infected.
But it does an excellent job of cleaning out malware that's already on your system, as well as removing legal adware and potentially unwanted programs that antivirus software often ignores. Malwarebytes Free doesn't interfere with any antivirus software that's already installed, so it's perfectly safe to install it alongside one of our recommended brands.
Just don't upgrade to the paid Malwarebytes Premium, true antivirus software that does poorly in lab tests and which will conflict with other AV programs. We recommend Malwarebytes Free as a complement to any of the best antivirus programs, free or paid. Read our full Malwarebytes Free review. Before you buy antivirus protection, figure out what you need.
If you have young children at home, then consider midrange antivirus products, most of which include parental controls.
Do you want an all-encompassing security solution? Or are you a techie who understands and the risks of using the internet? Then a low-priced basic program might be all you need. MORE: How to buy antivirus software. Once you've got your priorities figured out, then determine how many machines you'll need to protect. Most vendors offer single-device licenses for Windows PCs. But multi-device, multi-platform licenses for five, 10 or more computers and mobile devices are available in midrange and premium antivirus packages, covering Windows, macOS, Android, iOS and sometimes even Linux.
Some vendors offer plans that cover an unlimited number of devices. Gone are the days when you could walk into a store and pay a one-time fee for an antivirus product that came in a box off a shelf. All the vendors now sell their software licenses as yearly or multiyear subscriptions.
The upside is that you'll always get the latest software, which you can download and install straight from the internet. Many antivirus products are sold online for much less than their list prices. But each brand offers basic, midrange and premium configurations of features and pricing, with every step up adding more features. Kaspersky Lab maintains that no public evidence of any wrongdoing has been presented by the US government, and that the US government's actions against Kaspersky Lab were unconstitutional.
In Kaspersky's favor, it continues to earn top scores and awards for virus and malware detection and endpoint protection from independent testing labs. And it's reasonably priced. In the end, even though no one has ever publicly produced a "smoking gun" linking the company to Russian intrigue, we think any of the options listed above are a safer bet.
And if you are a US government employee or work with the federal government, you'll want to steer clear of Kaspersky internet security products -- and perhaps use one of the antivirus software products mentioned here instead. Picking the best antivirus software for Windows means finding one that keeps your PC safe, doesn't take up a lot of system resources, is easy to use and stays out of the way till you need it. Here's what to look for.
Antivirus software runs virus scans for known viruses and malware, of course, and can offer real-time protection. And it watches for shady websites and suspicious links to keep you out of trouble. It can also offer ransomware protection and monitor unexpected behavior that may be a sign of new and not-yet-identified viruses and malware. You want antivirus software that can successfully identify these unknown online threats without flagging too many false positives. Light on system resources.
You don't want antivirus software that taxes your PC's resources. If after you install the program, websites open slowly, apps download or open sluggishly or file copies take longer than expected, you may want to try another service. The good news is, all our picks offer a free trial to let you try out the antivirus program, so if your system feels sluggish after installation, you may want to keep looking.
Cost and discounts. Don't just pay the sticker price for antivirus protection. Before you buy, check for discounts on a company's website. Another way to save: The prices we list above are for 10 devices -- if the company offered that package -- but you can trim your cost with antivirus packages if you need to cover three or five devices.
You may also find discounts on an app's Amazon page. To be effective, antivirus software needs to monitor what's going on with your PC, check in with company servers about unusual behavior and should provide sound banking protection. The companies say they anonymize this technical data as much as possible to protect your privacy. But if you want to know more, the security companies on our list post privacy policies on their websites, so read their privacy statements to learn what the companies do with the information you share.
Protection for other platforms. Microsoft is by far the biggest target for viruses and malware. While the Mac does come under attack via side-loaded apps, it's rare, and if you download apps only from the Mac and iOS app stores and keep your guard up when clicking links and download files, you should be OK without an antivirus app on Apple devices.
CNET editors pick the products and services we write about. When you buy through our links, we may get a commission. Best free Windows antivirus Microsoft Defender. Jump to details. See at Microsoft. See at NortonLifeLock. See at Bitdefender. Best on-demand Windows malware removal Malwarebytes.
See at Malwarebytes. Solid subscription antivirus alternative McAfee Total Protection. See at McAfee. Another good subscription option Trend Micro Maximum Security. See at Trend Micro. See at ESET. Alternative free Windows antivirus Sophos Home. See at Sophos. Our recommendations Looking for free antivirus protection, malware protection or virus detection, willing to pay for an antivirus program that offers broad internet security coverage across all your devices, including from ransomware and phishing, or need to remove a computer virus or malware from your PC right now?
Reviews Guidelines. Katarina Glamoslija Updated on: January 13, This article contains. Short on time? Download Avira Free Security for Windows here. Quick summary of the best free Windows antiviruses for 1. Kaspersky — Free extras like a VPN, dark web monitoring, and a password manager.
Malwarebytes — Minimalistic antivirus with on-demand scanning. Sophos — Good real-time scanning with remote access for 3 PCs. Comparison of the Best Free Antiviruses for Windows in Here are a few of them: Avast. While Avast — and their subsidiary antivirus company AVG — continue to offer two pieces of widely used free antivirus software Avast Free Antivirus and AVG AntiVirus Free their repeated privacy violations have caused too many concerns.
You can read more here. McAfee is one of my favorite antiviruses of It comes with an advanced anti-malware engine, excellent web protections, and a VPN with unlimited data. Why should I use a free antivirus instead of Windows Defender? Is it safe to use a free antivirus? Is Avast free? What are the most common types of viruses that affect Windows computers? Will Windows allow me to install a free antivirus? Read Review Visit Website. Share It: 0. Updated on: January 13, About the Author Katarina is a tech enthusiast specializing in cybersecurity products, data protection, and maintaining strong practices for general online safety.
When she's not a "Safety Detective", she likes to play with her two cats, binge watch crime dramas, sample fine wines, and read about the origins of the universe.
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