IPv4 to IPv6 Converter

Convert an IPv4 address to IPv4-mapped IPv6 notation.

IPv4-mapped IPv6 addresses embed a 32-bit IPv4 address in the last 32 bits of a 128-bit IPv6 address, written as ::ffff:a.b.c.d. This is commonly used to represent IPv4 connections over IPv6-only software stacks.

Produces the IPv4-mapped IPv6 form ::ffff:a.b.c.d.

Related tools

IPv6 ExpandExpand a compressed IPv6 address to its full 8-group form.IPv6 CompressCompress a full IPv6 address into its shortest valid form.IP to DecimalConvert an IPv4 or IPv6 address to its integer (decimal) form.

Frequently asked questions

Is this the same as a real IPv6 address?

No. An IPv4-mapped address is a compatibility notation, not a natively routable IPv6 address.