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MAC Address Generator

Generate random MAC addresses with configurable format, count, and addressing options. Uses cryptographically secure randomness.

Number of Addresses (1–50)

Separator Format

Case

Type

Administration

Frequently Asked Questions

A MAC (Media Access Control) address is a 48-bit hardware identifier assigned to network interfaces. It is typically represented as six pairs of hexadecimal digits separated by colons or dashes.

The least significant bit of the first octet determines unicast (0) vs multicast (1). The second-least significant bit determines universally administered (0) vs locally administered (1). Locally administered addresses are safe for testing since they won't conflict with real hardware OUIs.

Yes. Each address is generated using crypto.getRandomValues() for cryptographically secure randomness, with the appropriate bits set based on your unicast/multicast and local/universal selections.