MAC Address Formatter
Normalise any MAC address to colon-separated upper case.
Quick answer: enter your details below and click Format MAC address — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
M
Developer
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How to use
- Paste or type a MAC address in any common style.
- Press Format MAC address.
- Copy the normalised colon-separated result.
About this tool
MAC addresses turn up in several styles: colon-separated, hyphen-separated, dot-separated, or with no separators at all, and in mixed case. This tool strips the separators, checks that exactly twelve hex digits remain, and rewrites the address as six upper-case pairs joined by colons. It does not check whether the address belongs to a real device or manufacturer; it only fixes the format.
Frequently asked questions
Which input styles are accepted?
Colon-separated, hyphen-separated, dot-separated and plain twelve-digit forms are all accepted, in any letter case.
What if my input has the wrong number of digits?
The tool reports an error, since a valid MAC address must contain exactly twelve hex digits. Check for a missing or extra pair.