MAC Address Formatter
Reformat and analyze MAC addresses: colon/hyphen/dot/bare styles, 48-bit integer, bit-level analysis, U/L and I/G flags, variants.
This tool handles input and primary processing in your browser and is designed not to send the input to QuickKit’s server.
MAC analysis
| Colon (00:1a:2b:3c:4d:5e) | — |
|---|---|
| Hyphen (00-1a-2b-3c-4d-5e) | — |
| Dot / Cisco (001a.2b3c.4d5e) | — |
| Bare (001a2b3c4d5e) | — |
| 48-bit integer (decimal) | — |
| 48-bit integer (hex) | — |
| First octet (binary) | — |
| U/L bit (1=local, 0=universal) | — |
| I/G bit (1=multicast, 0=unicast) | — |
| Administration | — |
| Transmission | — |
| OUI (organizationally unique ID) | — |
| NIC (network interface controller) | — |
| Is broadcast | — |
| Is all zeros | — |
| Locally-administered variant | — |
| Multicast variant | — |
Batch mode
Normalized MAC list
How it works
Reformat one MAC address in colon (00:1a:2b:3c:4d:5e), hyphen (00-1a-2b-3c-4d-5e), dot (001a.2b3c.4d5e), or bare (001a2b3c4d5e) format, and analyze its 48-bit properties. Shows all four output styles, the 48-bit integer in decimal and hex, binary breakdown of the first octet with U/L (bit 1) and I/G (bit 0) flags, administration mode (universal/local), transmission type (unicast/multicast), OUI (organizationally unique identifier) and NIC parts, broadcast and all-zero checks, and computed locally-administered and multicast variants. Batch mode: paste one MAC per line (up to ~1000) for a normalized list with invalid lines reported; no vendor/OUI name lookup is performed — bit-level analysis only.