Avast covers anywhere from one computer to 30 devices on a single subscription, depending on the plan. The free antivirus is licensed for one device, most paid plans cover either one device or up to 10, and family-tier plans stretch to 30 devices shared among as many as six people. So the answer to how many computers Avast covers depends entirely on which product you buy.
Avast Free Antivirus
The free version is designed for one device at a time. To move it to a different computer, you download and install the app again on that machine.1Avast. Free Antivirus Download Nothing technically blocks you from installing it on more than one personal computer, and Avast’s community forum and older licensing documentation confirm that personal, non-commercial users can run the free version on as many home devices as they need.2Avast Community. How Many Devices Can I Have Under One Account Each installation is independent, though. There is no shared dashboard tying them together the way paid subscriptions do.
Avast Premium Security: 1 or 10 Devices
Premium Security is Avast’s core paid antivirus, sold in two versions.
The Single-Device plan covers one desktop (Windows PC or Mac) plus one mobile device (Android or iOS) at no extra charge. It starts at $49.08 for the first year and renews at $77.99.3Avast. Premium Security
The Multi-Device plan covers up to 10 devices at once, in any combination of Windows, Mac, Android, and iOS.4Avast Support. Antivirus FAQ It starts at $69.48 for the first year and renews at $99.99.3Avast. Premium Security
Avast Ultimate: Same Caps, Shared Across Tools
Ultimate bundles Premium Security with SecureLine VPN, Cleanup Premium, and AntiTrack. Like Premium Security, it comes in a one-device or 10-device version.5Avast. Avast Ultimate All four tools draw from the same pool. If you use all 10 slots on antivirus, you cannot add an eleventh device just for the VPN.6Avast Support. Avast Ultimate Multi-Device Subscription The single-device version lists at $109.99 per year and the 10-device version at $139.99 per year.7PCMag. Avast One Premium Review
Avast One: 1, 3, 5, or 30 Devices
Avast One is the broader security suite that combines antivirus with VPN, performance tools, and, at higher tiers, identity protection. Coverage depends on the tier:
- Avast One Basic (free): 1 device.8SafetyDetectives. Avast One Review
- Avast One Silver: up to 3 devices individual, up to 30 family.9Avast Support. Avast One Silver FAQs
- Avast One Gold: up to 5 devices individual, up to 30 family.9Avast Support. Avast One Silver FAQs
- Avast One Platinum (US only): up to 30 devices for up to 6 family members, with credit monitoring and identity-theft insurance added.8SafetyDetectives. Avast One Review
Avast discontinued the Silver and Gold names by the end of 2025, though existing subscribers can still manage those plans through their Avast accounts.9Avast Support. Avast One Silver FAQs
How the 30-Device Family Cap Works
Family plans let one person, the Family Organizer, invite up to five other people to share a subscription. Together, the group can activate the subscription on a combined maximum of 30 devices. Family Sharing currently works with Avast One Family on all four supported platforms, Avast Premium Security Multi-Device on Windows and Android, and Avast Cleanup Multi-Device on Windows.10Avast Support. Use Family Sharing
Swapping Devices When You Hit the Cap
You can move a paid subscription between machines at any time. Deactivating or uninstalling Avast on one device opens that slot for a new one.11Avast Support. Transfer Your Avast Subscription To activate on the new device, enter the code from your confirmation email or sign in with the Avast account tied to your purchase.12Avast Support. Activate Avast Premium Security Multi-Device
What About Business Use?
Consumer plans are licensed for personal use. If you’re covering a company’s computers, Avast Small Office Protection covers up to 10 devices across PC, Mac, Android, and iOS, the same cap as the consumer multi-device plan.13Avast. Small Office Protection Beyond 10 devices, Avast steers buyers to its Essential, Premium, and Ultimate Business Security tiers, which are marketed for up to 100 or more devices and priced through sales consultations rather than a self-service checkout. A 30-day business trial is available for up to 100 devices.14Avast. Small Business Cybersecurity Solutions