MAC address formatter

Convert MAC addresses between colon, hyphen, Cisco dot and plain formats, check unicast or multicast and generate a random MAC.

Runs in your browser · nothing is sentPorts, protocols & bandwidth

MAC address

Any format, for example aa:bb:cc:dd:ee:ff

Uppercase

About this tool

Paste a MAC address in any format to see all common notations plus its transmission and administration bits.

🔒 Your input stays in your browser and is never sent anywhere.

What is a locally administered MAC?

The second-lowest bit of the first byte is set. Virtual machines and privacy features often use such addresses.

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