IPv6 Address to MAC Address Converter

Convert IPv6 addresses to MAC addresses. Enter any IPv6 address to extract the corresponding MAC address instantly.

IPv6
Convert IPv6 addresses to MAC addresses. Enter any IPv6 address to extract the corresponding MAC address instantly.
IPv6 Address to MAC Address Converter
Convert IPv6 addresses to MAC addresses. Enter any IPv6 address to extract the corresponding MAC address instantly.

MAC

AA:BB:CC:DD:EE:FF

How to Convert IPv6 to MAC Address

You can convert an IPv6 address back to a MAC address only when the IPv6 interface identifier was derived from that MAC with the EUI-64 method. This is most common with older link-local addresses that start with fe80:: and some stateless autoconfigured addresses.

When It Works

This reverse conversion works when the last 64 bits of the IPv6 address still contain an EUI-64 interface identifier.

  • The interface identifier was built from a 48-bit MAC address.
  • The middle bytes are still ff:fe.
  • The address was not generated by privacy extensions or another randomization scheme.

How the Conversion Works

The converter rebuilds the MAC address with these steps:

  1. Read the last 64 bits of the IPv6 address.
  2. Remove the inserted ff:fe bytes from the middle of the interface identifier.
  3. Flip the universal/local bit in the first byte.
  4. Format the remaining 48 bits as a standard MAC address.

Why No MAC Appears

You may not get a result for several reasons:

  • The IPv6 address is not syntactically valid.
  • The address is valid, but it was not generated from a MAC address with EUI-64.
  • The address uses privacy, stable-random, DHCPv6, or another non-MAC-based assignment method.