Bitdefender and Avast are two of the best-known antivirus products on the market. Avast in particular is a household name for anyone who has shopped for online security software. It has not been without controversy – past reporting revealed that it collected and sold users' web-browsing data – yet it is still trusted by hundreds of millions of individuals and businesses worldwide.
If you are shopping for a new antivirus product, Avast and Bitdefender are likely two of the names at the top of your list. Below is a detailed comparison of the performance, protection, and extra features each one offers, along with a look at the sign-up process, interface, and cost. Whether you know antivirus software inside out or are completely new to it, this should give you what you need to decide which is right for you.
The Short Version: Who Wins Between Avast and Bitdefender?
Bitdefender comes out ahead, thanks to superb malware detection and a set of extra features that most people will genuinely use. Whether you want parental controls to keep young children safe or airtight protection for your online banking, Bitdefender delivers the more complete package.
Avast vs Bitdefender at a Glance
Avast:
- Password manager
- Ransomware protection
- Sandbox tool
Bitdefender:
- Unlimited, secure VPN
- Advanced parental controls
- Multi-layer ransomware protection
Background
Avast: Avast originated in the Czech Republic and employs well over a thousand people. With several hundred million active users, it is one of the most widely used antivirus programs in the world. Its reputation took a hit after reporting revealed it had collected and sold customer data, but it remains a top choice for users everywhere.
Bitdefender: Bitdefender was founded in 2001 as a Romanian cybersecurity company. Today it protects hundreds of millions of users worldwide and works with small and medium enterprises as well as government organizations across some 150 countries. With a large engineering team, Bitdefender has a reputation as one of the most innovative security software makers around.
Pricing and Compatibility
Price is often the deciding factor when choosing security software, and antivirus is no exception. A good package is an investment, particularly at the higher tiers, so it pays to spend your money on the right one.
One key difference is that Avast offers a free antivirus tier designed to guard against the most common threats, while Bitdefender does not – though bear in mind the free package is very basic. At the top end, both companies offer premium suites that cover up to ten devices, with Bitdefender's flagship generally priced higher than Avast's. Both also offer cheaper mid-range packages to suit different budgets. Indicative pricing looks like this:
- Avast Free Antivirus: Free
- Avast Premium Security (1 PC): around $70 per year
- Avast Premium Security (1 Mac): around $60 per year
- Avast Premium Security, multi-device (10 devices): around $90 per year
- Bitdefender Internet Security: around $80 per year
- Bitdefender Total Security: around $90 per year
- Bitdefender Premium Security: around $150 per year
Both companies run frequent promotions, and Bitdefender in particular often discounts the first year heavily. Avast tends to reward loyal customers with renewal discounts instead. Both offer a 30-day money-back guarantee, so you can effectively try before you buy, and both work with all the major operating systems including Windows, Android, and macOS.
Malware Protection
Whether you use your device for work or leisure, solid protection matters – threats keep getting more sophisticated and more common, and not all antivirus programs perform equally. In independent AV-Comparatives malware protection tests, both products score very highly, typically in the high-99% range, with Avast edging ahead on raw detection.
The false-alarm test is just as revealing. It measures how often an antivirus incorrectly flags a safe file as malware. Here Bitdefender came out clearly ahead, recording far fewer false positives than Avast. Taken together, Bitdefender offers the stronger overall balance – excellent detection with the fewest false alarms – making it the more dependable option for day-to-day malware protection.
Impact on Computer Performance
Antivirus software can noticeably affect how your PC runs, which matters whether you are working, browsing, gaming, or streaming. In testing, Bitdefender took longer to complete a full scan than Avast – but it also scanned more than twice as many items in that time. During quick scans, Bitdefender was again slower.
When no scan was running, both products had a similar, minimal footprint. During active scans, however, Avast placed a heavier load on disk utilization despite finishing faster. In AV-Comparatives' broader performance tests – covering everyday tasks like browsing, installing and uninstalling apps, downloading, copying files, launching programs, and archiving – Bitdefender rated slightly faster overall than Avast.
Features
With so much of daily life happening online, protection for routine tasks – managing passwords, securing your banking details – is essential. Both Avast and Bitdefender offer a deep feature set. The headline features of each are:
Avast Premium:
- Blocks spam and phishing emails
- Secure password management
- Safer online shopping
- Malware blocking
- Advanced firewall
- Webcam protection
- An extra layer of ransomware protection
- Wi-Fi security scanning
- Permanent shredding of sensitive files
- Safely run suspicious apps in isolation
- Automatic app updates
Bitdefender Premium Security:
- Priority support
- Device optimizer
- Unlimited VPN traffic
- Parental controls
- Protection for Windows, Android, iOS, and macOS
- Protection against malware, adware, and spyware
- Multi-layer ransomware protection
Standout Features for Each Program
Avast Premium
Safer Shopping: If you bank or shop online often, Avast's Safer Shopping stops attackers from hijacking your router's DNS and redirecting you to fake sites built to steal your details, and reduces the chance of your passwords being intercepted.
Automatic App Updates: Updates do more than add features – they often patch security holes that attackers exploit. This tool automatically checks for the latest updates across your apps and keeps them current.
Sandbox: Opening a suspicious file is risky, but sometimes you need to see what is inside. Avast's Sandbox lets you open files in a safe, isolated environment before you ever run them on your PC.
Bitdefender
Anti-Theft: Bitdefender's Premium Security suite includes effective anti-theft and anti-loss tools for your Windows device, which you can access remotely from your Bitdefender account no matter where you are.
Unlimited VPN: The bundled VPN adds a layer of protection by encrypting all your online traffic, including sensitive data like passwords, downloads, and banking details. Premium Security includes unlimited encrypted traffic across Windows, macOS, and Android.
Multi-layer ransomware protection: Bitdefender takes a layered approach to ransomware, including a data-protection layer that shields personal documents, videos, music, and photos from attack.
Sign-Up and Installation
A quick, hassle-free setup is the least you should expect from any antivirus tool. Avast offers an easy checkout that hands you a download link after a few personal and payment details, with installation taking only a few minutes.
Bitdefender's sign-up is similarly quick, and installation takes just a few minutes too. One thing to note: Bitdefender switches automatic renewal on by default, so turn it off during setup if you are not sure you will want to renew next year.
Interface and Ease of Use
Antivirus features can look intimidating, but both products keep things approachable. Bitdefender greets you with a clear "You are safe" status alongside an overview of your device, protection, privacy, and utilities, plus a spot to submit suggestions for future updates.
Avast is equally straightforward. On opening, a green tick confirms your device is protected, with an obvious button to run a smart scan. If you want more detail, the protection, performance, and privacy sections are one click away in the left-hand menu.
Customer Support
Good support matters when something goes wrong. Avast offers help by email and live chat, with paid phone support available if you need it, plus a detailed self-service FAQ for those who would rather find answers themselves.
Bitdefender Premium Security also offers excellent support. Its extensive help hub answers many common questions and includes how-to videos for self-service fixes. If you would rather speak to someone, you can reach the team by phone, email, or live chat around the clock, and there is an expert community drawing on both users and staff.
Conclusion
Avast and Bitdefender are both excellent antivirus suites, but Bitdefender is the clear winner here. It outperforms Avast on malware protection, records fewer false alarms, and has a slightly lighter impact on everyday PC performance. It does cost more, but you get what you pay for in extra everyday protection – a VPN, anti-theft tools, and parental controls to keep you and your family safe online.