IPv4 to IPv6 Converter & IPv6 Formatter
Translate IPv4 addresses to IPv4-mapped IPv6 and 6to4 tunnels, and expand or compress IPv6 addresses.
About This Tool
IPv4 to IPv6 Converter bridges legacy IPv4 addresses with modern IPv6 infrastructure, generating IPv4-mapped notation, 6to4 tunnel prefixes, and providing RFC 5952 zero-compression and full 8-hextet expansion.
Key Features
IPv4-mapped IPv6 generation (dotted and hex)
6to4 tunnel address prefix calculation
Full 8-hextet IPv6 expansion with leading zero padding
RFC 5952 IPv6 zero-compression (:: notation)
How to Use This Tool
- Enter an IPv4 address to view IPv4-mapped IPv6 and 6to4 prefix formats.
- Enter an IPv6 address to expand full 8 hextets or compress consecutive zeros using RFC 5952 notation.
Why Use This Tool
- Crucial for dual-stack server configuration, IPv6 migration, and log normalization.
- Handles both dotted-decimal and hexadecimal representations.
Pro Tips
- Use RFC 5952 compressed format for consistent storage and display in databases and configuration files
Frequently Asked Questions
What is an IPv4-mapped IPv6 address?
An IPv4-mapped IPv6 address (e.g. ::ffff:192.168.1.1) allows IPv6 applications to communicate directly with IPv4 endpoints over dual-stack network sockets.
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