Clean, validate, and format MAC addresses into standard notation types. Type any raw or partially-formatted MAC address to instantly generate IEEE colon, hyphen, Cisco dot, binary representation, or raw hex formats. Features a client-side OUI lookup to identify the NIC hardware manufacturer or virtual machine signature completely offline.
Key Features of MAC Address Formatter
- Standard IEEE & Cisco Formats Standard IEEE formatting and Cisco dot formatting.
- OUI Vendor Lookup OUI vendor lookup maps.
- Casing Toggles Lowercase/uppercase casing toggles.
MAC Address Formatter Examples
Cisco Format
Convert standard MAC to Cisco notation.
Input
00:1A:2B:3C:4D:5EOutput
001a.2b3c.4d5eHow to Use MAC Address Formatter
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1. Enter a MAC Address
Paste or type a MAC address in any format, such as with colons, hyphens, dots, or as a raw hex string.
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2. Choose Output Format and Casing
Select IEEE colon, hyphen, Cisco dot, or raw hex format, and choose uppercase or lowercase output.
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3. Copy the Reformatted Address
Click Copy next to any format to save the reformatted MAC address to your clipboard.
Common Use Cases for MAC Address Formatter
- Router Tables Standardizing Standardizing router address tables.
- Hardware Inventory Formatting Formatting physical hardware lists for server registers.
- DHCP Auditing Auditing DHCP logs.
The Technical Details
Sanitizes inputs to isolate raw hex characters, parsing the first 3 bytes against a local OUI vendor list.
Frequently Asked Questions
Which input formats are accepted?
The tool accepts colons (AA:BB:CC:DD:EE:FF), hyphens (AA-BB-CC-DD-EE-FF), Cisco dots (AABB.CCDD.EEFF), and raw hex strings.
What is the difference between IEEE and Cisco notation?
IEEE uses two-character groups separated by colons or hyphens. Cisco uses four-character groups separated by dots.
Is any data sent to a server?
No. All formatting runs in your browser; nothing is ever uploaded.
Can I look up the OUI manufacturer?
The tool displays the formatted address formats. OUI lookup (identifying the manufacturer from the first 3 bytes) is not included in this tool.