MAC Address Normalizer & Formatter
Local ProcessingStandardize hardware MAC addresses into uniform colon, hyphen, dot, or continuous formats in upper or lowercase.
How It Works & Processing Standards
Standardize hardware MAC addresses into uniform colon, hyphen, dot, or continuous formats in upper or lowercase.
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Current Limits
- Maximum input length: 100,000 characters
Devices write MAC addresses differently: colons, hyphens, Cisco-style dots or no separator. Enter any form and the 12 hex digits are rewritten with the separator you choose.
What You Can Do
- Unify separators
- Choose colon (:), hyphen (-), dot (.) or none.
- Lower and upper case
- Shows both forms.
How to Use MAC Address Normalizer & Formatter
- 1Enter a MAC addressPaste it in any format.
- 2Choose a separatorPick the target separator.
- 3CopyCopy the normalised address.
Examples
Hyphen → colon
Input: 00-1A-2B-3C-4D-5E
Result: 00:1a:2b:3c:4d:5e (upper case 00:1A:2B:3C:4D:5E)
Cisco dots → hyphen
Input: 001a.2b3c.4d5e
Result: 00-1a-2b-3c-4d-5e
Common Use Cases
- Unifying MAC notation across router, switch and server lists
- Formatting for DHCP reservations or MAC filters
Frequently Asked Questions (FAQ)
Which format is standard?
IEEE uses hyphens (00-1A-…), while Linux and macOS usually use colons. Pick whatever the target system expects.