Free Antivirus Software. Expert Protection, 100% Free
Bitdefender Antivirus Free brings you the peace of mind you’re looking for with zero costs
Finds and defeats existing viruses
Minimum impact on system performance
No annoying pop-ups
No credit card needed
Install Bitdefender Antivirus Free in 3 Easy Steps
You only need a few clicks to enjoy the best free antivirus protection.
Step 1
Download Bitdefender Free Antivirus
Step 2
Open your downloaded file and start the installation
Step 3
Sit back and let your free antivirus software keep your computer safe.
Is There a 100% Free Antivirus?
Absolutely! Bitdefender Antivirus Free offers top-notch protection for your Windows PC without any hidden costs or time limits. It's completely free to use, forever. But that's not all - with some of the best virus detection rates in the industry, you can rest easy knowing your devices are safe from even the trickiest viruses and cyber threats out there.
Best Free Antivirus Software for All Digital Threats
An antivirus that offers virus protection completely free? That’s right. Bitdefender Antivirus Free learns your PC's daily activity patterns to instantly detect and isolate suspicious changes in real-time, shielding you from known and emerging threats, including:
Ransomware
Financial extortion attacks that freeze PCs are on the rise, attacking everyone from individuals to global enterprises.
Infected Downloads
Infected downloads are files that contain harmful viruses or malware, which can compromise your device’s security and steal personal information
Phishing
Cybercriminals exploit AI tools to write shockingly personalized messages that can dupe just about anyone.
Zero-Day Exploits
Every software update comes with flaws that need fixing. Until they’re detected, hackers use them as infection points.
Rootkits & Trojans
Notoriously hard to detect, these attack your PC’s central nervous system and use its credentials to steal & impersonate you.
Malicious Websites
Malware can be embedded into almost anything you click on, including “next-gen” financial assets like NFTs.
Infected Device? Make it Like New With Bitdefender Antivirus Free
Is your device already infected? No sweat! Our free antivirus doesn't just shield you from future threats – it's also your personal cleanup crew. With powerful scanning and removal tools, we'll hunt down existing viruses and show them the door. Your device will be squeaky clean and ready to take on the online world, all without spending a dime. Don't let viruses overstay their welcome – give them the boot today!
What Makes Bitdefender the Best Free Antivirus?
Many free antivirus solutions are as intrusive and resource-heavy as the viruses they’re supposed to stop. Only Bitdefender Antivirus Free is designed from the ground up to keep you safe without disrupting your workflow and focus.
Keeps you informed without bothering you
Unlike other products, Bitdefender Antivirus Free is a non-intrusive software that only alerts you about threats when necessary.
Daily virus scans that don't hold you hostage
Worried about painfully slow scans that drag your system to a halt? Don't be. Bitdefender’s customizable virus scans catch every threat without negative impact on performance.
Won't interfere with your other apps
Some antivirus tools are so intrusive they can feel like a virus. Bitdefender’s features stay tightly contained in one app, so they're out of sight until you actually want to see them.
100% free antivirus protection
Get an antivirus that is totally free, no hidden costs, no trials required. Simply download and install the product by creating a Bitdefender Central Account.
Advanced Threat Defense
Ever wondered where threats come from? This feature shows you exactly where the threat originated and explains what could have happened if the antivirus hadn’t stopped it, giving you peace of mind and complete control over your device’s security.
Award-winning security software you can trust.
You get the most innovative technologies that predict, prevent, detect and remediate even the latest cyber-threats, anywhere in the world.
Your Built-In Antivirus May Not Be Enough
Don't let your built-in protection lull you into a false sense of security. While it's better than nothing, it simply can't keep up with the constantly evolving cyber threats out there. Hackers are getting smarter and viruses more sophisticated by the day.
That's why you need a real antivirus solution like Bitdefender Antivirus Free on your side. Our advanced behavior-based detection catches even the vilest virus before it can wreak havoc. Plus, with regular updates, you're always protected against the latest threats.
Looking to Go Beyond Free Antivirus?
Free antivirus software is a great first line of defense, but when it comes to protecting your digital assets and online presence, sometimes you need a little more firepower.
So, if you’re looking for the type of protection that’s locked, loaded, and ready to neutralize cyber threats that dare cross your path, give Bitdefender Antivirus Plus a chance.
Bitdefender Antivirus Free
Basic protection against viruses and other types of malware.
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Bitdefender Antivirus Plus
The only antivirus given a perfect 5.0/5.0 rating by PCMag.com.
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| 30days money back guarantee |
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Includes everything from Antivirus Free plus: |
Discover More Free Security Tools
Expand your antivirus toolkit with these free tools to safeguard your digital life.
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Scamio
Check any scam in seconds, this free 24/7 chatbot is powered by our award-winning threat detection.
Bitdefender
Link Checker
Protect yourself from online traps — check every link for safety and authenticity in just seconds.
Bitdefender
Password Generator
Get ready to use ultra-secure passwords to protect your digital life from hackers, leaks and brute-force attacks.
Frequently asked questions
Is there a 100% free antivirus?
How long can I use Bitdefender Antivirus Free on my Windows device?
With Bitdefender Antivirus Free for Windows you have permanent access to award-winning technologies that keep you safe from viruses and cyber threats. No need to worry about availability, you will be able to use the free antivirus protection without any validity due date.
Simply download and install free protection for your PC running any version of Windows (including Windows 10 and Windows 11) and enjoy a worry-free experience while gaming or browsing the Internet.
How can I check my computer for viruses?
Unexpected pop-ups, unfamiliar apps running in the background, slowdowns, and random sounds are some signs that your laptop or PC might be compromised. If you experience any of these, the best way to check your device for viruses is to use a dedicated antivirus for Windows.
Download Bitdefender Free Antivirus for Windows and benefit from real time protection for your laptop or PC. This free antivirus includes a powerful virus scanner which instantly detects and blocks viruses and e-threats on your Windows devices. If you need to make sure that your device is safe, the virus cleaner module will keep any threat at distance at all times.
How do I switch from the previous free product to the new Bitdefender Antivirus Free for Windows?
How does Bitdefender Antivirus Free for Windows protect me against viruses and cyber threats?
Bitdefender Antivirus Free for Windows uses the same Bitdefender technologies considered the best in the industry, as proven by the last decade of independent test scores.
Easy to install and use, Bitdefender Antivirus Free reacts instantly to cyber threats with no compromise to your computer’s performance.
What type of devices and operating systems does Bitdefender Antivirus Free cover?
Why do I need Bitdefender Antivirus Free on Windows 11?
How does Bitdefender Antivirus Free for Windows compare to other Bitdefender security products?
Bitdefender Antivirus Free for Windows is a free antivirus software especially designed to protect Windows computers.
Need protection on more operating systems? Bitdefender Total Security offers cross-platform protection that covers Windows PCs, Macs, smartphones and tablets running Android or iOS for up to 10 devices. Bitdefender Total Security also includes a basic VPN with up to 200 MB per day of encrypted traffic for your devices.
Need unlimited VPN traffic? Bitdefender Premium Security includes Bitdefender Total Security, Bitdefender Premium VPN for Unlimited Traffic & Premium Support.
Do I get a VPN with my Bitdefender Antivirus Free download?
Yes. Bitdefender Antivirus Free includes a basic version of Bitdefender VPN, which offers up to 200 MB of encrypted traffic per device, per day — at no additional cost.
If you need unlimited traffic or access to advanced features like server location selection, you can get Bitdefender Premium VPN at any time.
I changed my computer. How do I reinstall Bitdefender Antivirus Free?
Log in to your Bitdefender Central account, go to My Devices and start installing Bitdefender on your new device.
Didn't find what you were looking for?
Log in to your Bitdefender account at Bitdefender Central to find out more about your Bitdefender products (video tutorials included).
Helpful articles are also available in Bitdefender Support Center.
System requirements
- Windows™ Operating Systems
- Microsoft Windows 7 (all versions) with Service Pack 1 (SP 1) or later.
- Mac® Operating Systems
- macOS X Yosemite (10.10) or later
- Android™ Operating Systems
- Android 5.0 or later
- iOS Operating Systems
- iOS 12 or later
- SOFTWARE REQUIREMENTS
- Supported browsers:
- Chrome 56 and later
- Firefox 52 and later
- Safari 10.0 and later