MAC Address Formatter
Normalize a MAC address and check its structure, without claiming to identify a device or owner.
Any common spelling works: 00-1A-2B-3C-4D-5E, 00:1a:2b:3c:4d:5e, or 001a.2b3c.4d5e.
Try:
Your result
Type a MAC address to see it in every format.
How to use it
- Type a 48-bit address.
- Read the colon form.
- Read unicast or multicast, then universal or local.
Examples
- Dashes00-11-22-33-44-55 00:11:22:33:44:55 unicast universal
- Local bit02:00:00:00:00:01 02:00:00:00:00:01 unicast local
- Multicast01:00:00:00:00:00 01:00:00:00:00:00 multicast universal
Tool details and privacy
Type a 48-bit address with colons, dashes, or dots. The page rewrites it in lowercase colon form and reads the two low bits of the first octet.
Those two bits are part of the address. A vendor name is not.
Options
- The result is lowercase with colons.
- Only 48-bit addresses are accepted.
Limits
- A short address is refused.
- The page does not name a vendor.
- EUI-64 and IPv6 interface identifiers are not converted.
Privacy
What you type stays in your browser. Nothing is uploaded or saved on the server.
Questions
Does this name the vendor?
No.
Which bit means multicast?
The low bit of the first octet.
Are 64-bit addresses accepted?
No.
Is the address uploaded?
No.