IPv4 ⇒ IPv6 Conversion
Convert an IPv4 address into IPv6 notation
Features
Convert to 4 IPv6 notations at once
Generate mapped, zero-compressed, full, and shortened forms simultaneously
Supports IPv4-mapped addresses
Embed within IPv6 in the format prefixed with ::ffff:
One-click copy of conversion results
Copy each notation individually with the button beside it
Check behavior with sample IPs
Just pick a representative IPv4 to instantly try the conversion
How to Use
Enter the IPv4 address
Enter the address in the input field in a format like 192.168.1.1
Run with the convert button
Press the convert button or hit Enter after input to run
Check the 4 notations
Review the mapped, zero-compressed, full, and shortened notations in a list
Copy the notation you need
Copy the desired notation with one click using the copy button on each row
Use Cases
Pre-check for IPv6 migration
Use it to verify replacing existing IPv4 equipment addresses with IPv6 notation
Dual-stack configuration
Obtain configuration values for dual-support environments using IPv4-mapped addresses
Network device configuration
Quickly prepare the notation to register on routers and firewalls
Learning IPv6 notation rules
Use it as study material to understand the difference between full and shortened notation through real examples
Basic Knowledge
What is IPv4-Mapped Address
An IPv4-mapped address is a notation like "::ffff:192.0.2.1" that embeds an IPv4 address within the IPv6 format. It is used when IPv6-capable systems need to communicate with IPv4 peers.
IPv6 Abbreviation Notation
In IPv6 addresses, leading zeros in each block can be omitted, and consecutive blocks containing only zeros can be compressed to "::" in one place. Since the same address can be written in multiple ways, it is important to standardize the notation when comparing or configuring addresses.
Safety and Privacy
Runs entirely in your browser
Your input data is processed only within your browser and is never sent externally.
Processing only in your browser
address conversion is processed entirely within your browser, and input data is not sent to any server.
Communications encrypted with HTTPS
Page loading is also encrypted by TLS, and content cannot be read by third parties.
No transmission to third parties
Input content is not sent to external services such as ad networks or trackers.
No automatic saving of results
the IP address you entered and input suggestions are not stored on the server.
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Available free of charge for individuals and corporations, commercial and non-commercial use alike.No prior permission or usage application is required. Feel free to use it in various situations.
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Can be used for commercial purposes such as research, calculation, processing, and conversion in business and production.
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If using in streaming and videos
Link to RAKKOTOOLS in the description, or Mention or display that you are using RAKKOTOOLS in the stream or video.
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Usage guidelinesYou are free to use it for normal purposes. However, use for purposes that violate laws, infringe on third-party rights, impose significant load on the service, or otherwise interfere with service operation is prohibited.
We do not guarantee the accuracy or completeness of information and calculation results obtained from each tool.
This notice is a translation of the original Japanese text. If there is any discrepancy between the translation and the original, the Japanese original takes precedence.