Free Online Random MAC Generator

A MAC builder outputs 48-bit hardware addresses via crypto.getRandomValues, with configurable separator, case, and optional vendor OUI prefix (Apple, Cisco, VMware).

Your data is processed entirely in your browser and never sent to any server.

Instant results 100% private No signup needed

How to Use This Generator

  1. Pick a Separator: colon, hyphen, or dot (Cisco style).
  2. Pick Case: UPPER or lower.
  3. Pick a Vendor prefix or leave on Any for a locally-administered MAC.
  4. Set Count (1–100), click Generate, then Copy all.

What Is a Random MAC Generator?

Network testers, VM administrators and privacy-minded users build random MAC addresses for fixtures, virtual NICs and address spoofing. A MAC is six hex bytes — usually shown as 00:1A:2B:3C:4D:5E, sometimes as 00-1A-2B-3C-4D-5E or 001A.2B3C.4D5E in Cisco dot-quad notation.

The Any option generates a locally-administered unicast address by setting the U/L bit (bit 1 of the first octet) and clearing the I/G bit, so the result cannot collide with a real factory-assigned MAC. The Vendor option forces the first three bytes (the Organisationally Unique Identifier) to a known OUI for Apple, Cisco, Dell, VMware, Raspberry Pi and others, useful when a tool or filter expects to see real-looking hardware.

Every byte comes from crypto.getRandomValues. Generate up to 100 per click.

Frequently Asked Questions

What is a MAC address?
A 48-bit hardware identifier for a network device, usually shown as six hex bytes.
Why generate a random MAC?
Testing, VM cloning, or privacy (spoofing). Some networks filter by MAC.
What does the vendor prefix do?
It forces the first three bytes to a known OUI (e.g. Apple, Cisco) so the address looks like real hardware.

Published by the WeGotEveryTool team. We build and test every tool in-house and update pages when the underlying spec, formula, or recommendation changes.

Reviewed: May 2026. Disclaimer: this tool is provided as-is for general informational use. For decisions with material consequences (medical, legal, financial, security) verify results against a qualified professional source.

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