IPv4 to IPv6
View an IPv4 address in IPv4-mapped IPv6 notation. The conversion illustrates an address representation; it does not allocate an IPv6 address or change a network connection.
- Runs in your browser
- Nothing is uploaded
- No signup; device limits apply
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How to use this tool
Enter four decimal octets from zero to 255 separated by dots. Check that no extra characters follow an octet, and use the operating system’s own rules when configuring a real interface.
Results and examples
192.0.2.1 can appear as ::ffff:192.0.2.1 or ::ffff:c000:201 in mapped notation. Displaying those forms does not create an IPv6 route to the original address.
Limitations
- This mapped form is not general IPv6 allocation or NAT64 configuration.
- Reachability, DNS and firewall behaviour are not tested.
Fields
| Field | Guidance and constraints |
|---|---|
| IPv4 address | Check the unit and format displayed beside this field. |
Data handling
Processing stays in the current browser tab; the site does not upload tool input for the calculation itself.
Sources
Frequently asked questions
How is 192.0.2.1 represented?
192.0.2.1 can appear as ::ffff:192.0.2.1 or ::ffff:c000:201 in mapped notation. Displaying those forms does not create an IPv6 route to the original address.
Does conversion enable IPv6 connectivity?
This mapped form is not general IPv6 allocation or NAT64 configuration. Reachability, DNS and firewall behaviour are not tested.
