Paste any MAC address below and get the IPv6 link-local and IPv4 result in one click. No sign-up, no tracking — the calculation runs entirely in your browser.
How the conversion works:
For IPv6, the tool uses the EUI-64 method defined in RFC 4291 — it splits your MAC in half, inserts FF:FE in the middle, flips the 7th bit (Universal/Local bit), then prepends the fe80:: link-local prefix. For IPv4, it maps the last two MAC octets into the 192.168.x.x private range.
Accepts colon, hyphen, dot, or raw hex formats
RFC 4291 compliant EUI-64 bit-flip
No data leaves your browser — zero server logging
One-click copy for both results
Frequently Asked Questions
What is a MAC address?
A MAC (Media Access Control) address is a 48-bit hardware identifier burned into every network interface card by the manufacturer. You'll see it written as six pairs of hex digits — something like 3C:22:FB:A1:04:E7. The first three pairs identify the manufacturer (the OUI), while the last three are unique to that specific device. Every switch, router, and PC on your network has one, and they never change unless you manually spoof them.
How do I find my device's MAC address?
On Windows, open Command Prompt and run: ipconfig /all — look for "Physical Address" next to your adapter. On Linux or Mac, run: ip link show or ifconfig — the value after "ether" is your MAC. On Android, go to Settings > About Phone > Status > Wi-Fi MAC Address. On iPhone, Settings > General > About > Wi-Fi Address. Note: modern phones randomize their MAC by default for privacy.
What formats does this converter support?
The tool handles all four common notations automatically: colon-separated (AA:BB:CC:DD:EE:FF), hyphen-separated (AA-BB-CC-DD-EE-FF), Cisco dot notation (AABB.CCDD.EEFF), and raw hex with no separators (AABBCCDDEEFF). Just paste whichever format you have — the parser detects it and normalizes before converting.
Is the MAC to IP conversion accurate?
The IPv6 result is mathematically accurate — it follows the EUI-64 process from RFC 4291 and I have verified it against real hardware. The IPv4 result is a derived private-range address (192.168.x.x based on the last MAC octets), not a live network lookup. To find the actual IP a device is using right now, you need to check your router's DHCP lease table or run "arp -a" on a machine in the same subnet.
Is my data secure when using this tool?
Yes. The entire conversion runs inside your browser using JavaScript — the MAC address you enter never leaves your device. There is no server request, no logging, and no database. I built it this way deliberately: as a network engineer, I would not use a tool that phones home with address data, and I would not build one either.
Why SerialROI Instead of Other Converters?
I tested a dozen MAC-to-IP tools before building this one. Several of them flip the Universal/Local bit incorrectly in the EUI-64 calculation — which means the IPv6 address they produce is wrong. SerialROI does it right, every time.
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Fast & Instant
Get results in milliseconds with our optimized conversion algorithm.
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Secure & Private
Your data is never stored or shared. All conversions are private.
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Easy to Use
Simple interface with support for all MAC address formats.
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100% Free
No registration, no limits. Use our tool as many times as you need.
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