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MAC Address Generator

Generate random MAC addresses with locally administered bits set. Multiple formats supported. Runs entirely in your browser.

Local processing

What is MAC Address Generator?

A MAC (Media Access Control) address is a 48-bit hardware identifier for network interfaces. Locally administered MACs have the U/L bit set and are safe for virtual interfaces.

How It Works

Generates 6 random bytes, clears the multicast bit (bit 0 of first byte) and sets the locally administered bit (bit 1), then formats in the chosen style.

Common Use Cases

  • Virtual machine network interfaces
  • Testing network software
  • Container MAC assignment

Technical Details

IEEE 802. Formats: colon, hyphen, dot, none. Bits: U/L (locally administered), I/G (multicast).

How to Use

  1. Set count and format
  2. Click Generate
  3. Copy results

Privacy

All processing happens in your browser. Your data is never uploaded to any server.

FAQ

Are generated MACs valid?

Yes. The multicast bit is cleared and the locally administered bit is set, per IEEE 802 standards.

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Local MAC Address Lookup Look up the vendor/manufacturer of a MAC address by its OUI prefix. Validate format and check address type. Runs entirely in your browser. Local IPv4 Address Converter Convert IPv4 addresses between decimal, binary, octal, and hexadecimal formats. Runs entirely in your browser. Local UUID Generator Generate random UUIDs (v4) instantly in your browser. No upload, fully private.