MAC Address Generator

Generate random MAC addresses

The MAC Address Generator creates random MAC addresses in the format you choose — colon, hyphen, dot, or no separator, in upper or lower case. Generate one or up to a hundred at a time and copy them all with a click. It's a quick helper for testing, development, and learning, and runs entirely in your browser.

What is a MAC address?

A MAC (Media Access Control) address is a unique identifier assigned to a network interface — your laptop's Wi-Fi card, a phone's Ethernet adapter, and so on. It's a 48-bit value, usually written as six pairs of hexadecimal digits like 1A:2B:3C:4D:5E:6F. MAC addresses operate at the data-link layer and are used for local network communication.

How to use it

1. Choose how many addresses to generate.
2. Pick a separator and case.
3. Click Generate, then copy the list.

Common MAC formats

Style	Example
Colon	1A:2B:3C:4D:5E:6F
Hyphen	1A-2B-3C-4D-5E-6F
Dot (Cisco)	1a2b.3c4d.5e6f
None	1A2B3C4D5E6F

What it's for

• Testing — populate forms, databases, or device simulators with sample MACs.
• Development — generate placeholder identifiers for network software.
• Learning — see the structure and formatting variations of MAC addresses.
• Documentation — fill examples with realistic-looking addresses.

A note on uniqueness

Real MAC addresses are assigned so the first half identifies the manufacturer (the OUI) and the whole address is globally unique. These generated addresses are random and meant for testing — they aren't tied to a real manufacturer and shouldn't be used to impersonate hardware. For test data, that's exactly what you want.

Private and free

All generation happens in your browser — nothing is uploaded. The tool is completely free with no sign-up.