IPv4 to IPv6 Converter

What this checks

• IPv4-mapped IPv6 and expanded mapped IPv6 forms.
• Decimal, hexadecimal, binary, and reverse DNS representations.
• IPv4-compatible and 6to4 forms for legacy diagnostics.

How to interpret results

• IPv4-mapped IPv6 is the most common representation for carrying IPv4 literals in IPv6-aware software.
• 6to4 and IPv4-compatible forms are mainly useful when reading legacy network traces or documentation.
• Private IPv4 addresses convert mechanically but remain private addresses.

Common issues

• This converter does not create real IPv6 connectivity; it only converts address notation.
• Only IPv4 input is accepted. Use IPv6 Decoder for native IPv6 addresses.

Privacy note

This IPv4 to IPv6 converter runs entirely in the browser. The IPv4 address is not sent to the server.

Frequently Asked Questions

What is an IPv4-mapped IPv6 address?

An IPv4-mapped IPv6 address represents an IPv4 address inside IPv6 notation using the ::ffff:0:0/96 prefix, often displayed as ::ffff:192.0.2.1.

Is IPv4-compatible IPv6 still used?

The old ::192.0.2.1 IPv4-compatible form is deprecated, but it is shown because it still appears in legacy documentation and diagnostics.

Does this conversion call an API?

No. IPv4 conversion runs locally in your browser.