MAC Address Generator
Generate random MAC addresses in any format, with optional vendor prefix.
Continue your work
- MAC Address Lookup — Look up the vendor of a MAC address.
- UUID Generator — Generate other unique identifiers.
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Clear instructions
Find steps, examples and limitations below.
Use online
Open the tool in a supported web browser.
Free to use
No sign-up required. Tool-specific limits may apply.
How to use the MAC Address Generator
Generate random MAC addresses in any format, with optional vendor prefix.
- 1 Choose how many addresses you need and the format.
- 2 Optionally enter a vendor prefix, and choose locally administered, multicast and uppercase options.
- 3 Click Generate and copy the list.
Example and practical tips
For five virtual machines on one network, generate five locally administered addresses so they cannot clash with real hardware addresses.
Frequently asked questions
What does locally administered mean?
The second-lowest bit of the first byte marks an address as assigned locally rather than by a manufacturer, so it never collides with real vendor addresses.
Are the addresses random?
Yes. They use your browser’s cryptographic random number generator.
Report an issue
Something broken or not quite right? Tell us and we will look into it.