Free MAC Address Generator
Generate random valid MAC addresses in multiple formats. Supports custom OUI vendor prefixes. Free, fast, and works entirely in your browser with no sign-up required.
MAC Address Generator
Generate random valid MAC addresses in multiple formats. Supports unicast/multicast, local/universal, and custom vendor OUI prefixes.
Configuration
Unicast: addressed to a single interface. Multicast: addressed to a group.
UAA: assigned by the manufacturer (IEEE). LAA: assigned locally (e.g., virtualization).
About MAC Addresses
A MAC (Media Access Control) address is a 48-bit hardware identifier assigned to network interfaces. The first 3 octets (OUI) identify the vendor; the last 3 are device-specific. Bit 0 of the first octet: 0 = unicast, 1 = multicast. Bit 1: 0 = universal, 1 = local.
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Frequently Asked Questions
What is the MAC Address Generator?
The MAC Address Generator is a free online tool that generate random valid mac addresses in multiple formats. supports custom oui vendor prefixes. It runs entirely in your browser with no installation or sign-up needed.
What formats can I generate?
Colon-separated (AA:BB:CC:DD:EE:FF), hyphen-separated, no-separator, and Cisco format.
Can I specify a vendor prefix?
Yes — enter a custom OUI (first 3 octets) or choose from common vendor prefixes.
Is it free?
Yes, completely free.
Is my data safe with this tool?
Absolutely. The MAC Address Generator processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.
Does the MAC Address Generator work on mobile devices?
Yes, the MAC Address Generator is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.
Do I need to create an account to use this tool?
No account or registration is needed. Simply open the MAC Address Generator in your browser and start using it immediately. There are no sign-up walls or usage restrictions.
How do I use the MAC Address Generator?
Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.
Which browsers are supported?
The MAC Address Generator works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.
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About Free MAC Address Generator
Free MAC Address Generator is a free, browser-based tool in our Utility Tools collection. Everything runs locally on your device — no uploads, no sign-up, and your data stays private.