MAC Address Generator
Generate random MAC addresses in the format you need.
Hardware addresses on demand
A MAC address is the identifier assigned to a network interface, and there are times you need a random one — testing network software, configuring a virtual machine, setting up a device, or anonymising a real address. This generates valid, correctly-formatted random MAC addresses, singly or in bulk, in the separator style you prefer.
Generate the addresses in the format you need.
Formats and the locally-administered bit
MAC addresses are written a few ways — colon-separated, hyphen-separated, or dotted — and different systems expect different ones, so matching the format matters. A technical nicety worth knowing: a specific bit in the address marks it as locally administered rather than assigned by a manufacturer, which is the correct setting for an address you have made up, so it will not clash with a real hardware address. For testing and configuration, a properly-formed random MAC is exactly what you want.
Questions & answers
What formats can it generate?
The common ones — colon-separated, hyphen-separated and dotted — so you can match whatever your system expects.
Will a random MAC clash with real hardware?
A properly generated one is marked as locally administered, which keeps it distinct from manufacturer-assigned addresses.
Is anything uploaded?
No. The addresses are generated in your browser.