MAC Address Validator
Validate a MAC address, normalize it to standard form, and inspect multicast and local-administration flags.
Accepted formats: AA:BB:CC:DD:EE:FF, AA-BB-CC-DD-EE-FF, or AABBCCDDEEFF.
| Metric | Value |
|---|
Privacy: validation runs locally in your browser. No MAC addresses are stored or transmitted.
How it works
This page strips separators, checks that the value contains exactly 12 hexadecimal digits, normalizes it to uppercase colon-separated form, and inspects the first octet flags.
Examples
- 02:1A:2B:3C:4D:5E → valid, locally administered, unicast
- 01-00-5E-00-00-FB → valid, multicast
- AABBCCDDEEFF → valid, normalized to AA:BB:CC:DD:EE:FF
When to use this tool
This tool is designed for quick, practical tasks such as everyday calculations, data formatting, or simple conversions. It is best used when you need fast results without installing software or using complex tools.
When to use
- Quick checks or one-time calculations
- Validating or converting data before using it elsewhere
- Simple tasks that do not require advanced software
When not to use
- Critical financial, legal, or medical decisions
- Large-scale or automated processing
- Situations requiring guaranteed precision beyond basic validation
Always review results before using them in important contexts.
About this tool
This tool helps you perform quick utility operations directly in your browser. It runs entirely in your browser without sending data to a server.
You can use this tool when handling simple tasks without installing additional software. The results should be interpreted as a processed output based on your input data.
FAQ
- What formats does this validator support?
It supports common MAC formats such as colon-separated, hyphen-separated, and plain 12-hex-digit input.
- Does it normalize the MAC address?
Yes. Valid input is normalized into a consistent uppercase colon-separated format.
- Can it tell whether a MAC is multicast or locally administered?
Yes. It inspects the first octet and reports those bit flags.
- Is my input stored?
No. Validation runs locally in your browser and nothing is stored or transmitted.