Generate random MAC addresses in OUI, EUI-48, and EUI-64 formats for testing.
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More about the Random MAC Generator
A MAC address isn't just a random string of hex digits, its first three bytes, the OUI, are actually assigned to a specific manufacturer, which is why a genuinely realistic test address needs to look plausible at that level too, not just be technically well-formed, and the difference between the standard 48-bit EUI-48 format most devices use and the extended 64-bit EUI-64 format used in other addressing contexts matters depending on what's actually being tested. This tool generates random MAC addresses in OUI-aware, EUI-48, or EUI-64 format. Useful for generating a batch of plausible-looking test addresses for a network simulation, creating a MAC address in EUI-64 format for testing an IPv6 interface identifier, or producing device addresses for test fixtures without accidentally reusing the same one twice.
Generate random MAC addresses in OUI, EUI-48, and EUI-64 formats for testing. The Random MAC Generator is one of 900+ free developer tools on Toolblip - all open to use without a signup.
How do I use the Random MAC Generator?
Open the Random MAC Generator on this page, paste or upload your input, and the result updates as you type. Use the copy button to grab the output, or adjust options to tune the result. Nothing you enter leaves your browser.
Is the Random MAC Generator free to use?
Yes. The Random MAC Generator is a free online tool on Toolblip - no signup, no account, no hidden usage limits. It runs in your browser and works on desktop and mobile.
Is the Random MAC Generator safe and private?
Yes. The Random MAC Generator processes your data entirely client-side, so nothing you paste is uploaded or stored on any server. It's safe to use with internal snippets, private keys for debugging, or any other sensitive content you'd rather not send to a remote service.
What kind of output does the Random MAC Generator produce?
The Random MAC Generator produces clean, formatted output that you can copy or download with a single click. The output is tailored to the tool's purpose — formatted code, converted data, transformed text, or processed media — and is ready for immediate use in your project or workflow.
Does the Random MAC Generator work on mobile devices?
Yes. The Random MAC Generator is designed to work on any device with a modern browser, including phones and tablets. The interface adapts to smaller screens, and the core functionality — paste input, transform, copy output — works the same way regardless of your device.
Does the Random MAC Generator make real network requests?
Only where the task requires it (for example, looking up a DNS record). The interface and any parsing happen in your browser, and Toolblip doesn't log the queries you make.
Does the Random MAC Generator make real network requests to the URLs I check?
Yes, where the diagnostic requires it. For HTTP header checks and DNS lookups, the tool makes real network requests from your browser. Toolblip does not log these requests. For operations that do not require network access, everything is handled client-side.
Can I use the Random MAC Generator offline?
Once the page has loaded, the Random MAC Generator continues to work without an internet connection. Bookmark this page and return to it anytime - all logic runs locally.