Free tool · Addressing

MAC Address Formatter

Reformat MAC addresses and read OUI, cast and admin bits.

Colon00:1A:2B:3C:4D:5E
Hyphen00-1A-2B-3C-4D-5E
Cisco (dotted)001A.2B3C.4D5E
Bare001A2B3C4D5E
Lower-case00:1a:2b:3c:4d:5e
OUI (vendor)00:1A:2B
NIC (device)3C:4D:5E
CastUnicast
AdministrationUniversally administered (UAA / burned-in)

About this tool

Free MAC address formatter and validator. Convert a MAC address between colon, hyphen, Cisco dotted (xxxx.xxxx.xxxx) and bare formats, and see its OUI, NIC portion, unicast/multicast and universal/local bits. Everything runs entirely in your browser — nothing you type is sent to a server.

Related tools
IPv6 Expand & Compress
Expand to full form or compress IPv6 to its shortest notation.