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Best free antivirus software

By Adam Marshall

We rate free antivirus software downloads for malware protection and ease of use, so that we can tell you the top best free antivirus software suites around.

Put us to the test

Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

Looking for our full reviews? Click to jump straight to all our independent antivirus software reviews. 

Choose the best free antivirus software for you

Equipping your computer with virus protection doesn't have to be expensive – we've pinpointed the best free antivirus downloads that impressed us most in our lab tests. These free tools even outperformed a number of paid-for security suites.

Although these free security software packages are pretty basic, they will help you locate, prevent and remove viruses. The best have extra features such as a firewall or parental controls. But free internet security may not have all the features you need – for the most comprehensive protection, check out our Best Buy antivirus software.

Best free antivirus software packages

Typical price £0.00
Which? score 75%
Reviewed Nov 2017
Malware protection:
5 out of 5
Anti-phishing:
4 out of 5
Main menu:
5 out of 5
Anti-spyware:
Member exclusive
Anti-phishing tool:
Member exclusive

Fantastic security protection doesn't have to cost you a penny, as evidenced by this outstanding free Best Buy package.

Typical price £0.00
Which? score 72%
Reviewed Nov 2017
Malware protection:
4 out of 5
Anti-phishing:
4 out of 5
Main menu:
4 out of 5
Anti-spyware:
Member exclusive
Anti-phishing tool:
Member exclusive

What it lacks in features, it makes up for by strongly protecting your PC for free.

Typical price £0.00
Which? score 70%
Reviewed Nov 2017
Malware protection:
4 out of 5
Anti-phishing:
2 out of 5
Main menu:
4 out of 5
Anti-spyware:
Member exclusive
Anti-phishing tool:
Member exclusive

Not quite a Best Buy, but still a fantastic option for protecting your PC at no cost.

Does free internet security give enough protection?

Downloading free antivirus software is certainly tempting, and the options above will help to keep your computer free from malicious malware.

But you shouldn't regard paid-for packages as a waste of money – you can get Best Buy security software for around £20 per year, which isn't much to pay for the extra peace of mind it offers.

To help you decide whether or not to dig into your wallet for virus protection, check out our expert guide to choosing the best antivirus software.

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