MAC Address Generator
Get valid MAC addresses for virtual machines, containers and testing that won't clash with real hardware.
- Your data never leaves your device
- 100% free
- No sign-up
- Works offline after first load
How to generate a MAC address
- Choose a prefix or random addresses.
- Pick the format and how many.
- Copy or download — or paste a MAC to check it.
About MAC Address Generator
Generate random MAC addresses.
It works in your browser for speed and privacy, remembers your settings on this device, and every result can be copied, downloaded or shared.
Good for
- Virtual machines and containers
- Network testing and labs
- Privacy (randomised MAC)
Tip: Paste any MAC into the checker to see whether it is unicast or multicast and factory or locally assigned.
Frequently asked questions
Which MAC addresses are safe to use?
Locally administered unicast addresses (second hex digit 2, 6, A or E) — they can never clash with a real network card’s factory address.
Can I use a vendor prefix?
Yes — VMware, VirtualBox, QEMU/KVM, Hyper-V, Xen, Docker or your own prefix, so virtual machines look like the right kind of NIC.
Which formats are supported?
Colons (00:1A:2B:3C:4D:5E), dashes, Cisco dotted (001a.2b3c.4d5e) and plain, in upper or lower case.
Is it private?
Yes. Everything is generated or calculated in your browser with the Web Crypto API — nothing you type is uploaded, logged or put in share links.
Can I generate many at once?
Yes. Set how many you need and copy the whole list in one go.