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IPv6 address converter

Compress and expand IPv6 addresses, and inspect all eight hexadecimal groups.

128-bit address explorer2001:db8::ff00:42:8329
Group 1 · 16 bits0010000000000001
Groups8 × 16 bits
IPv4 mappedNo

Choose a group to inspect its binary value. Changing the output format preserves the address.

Processed on your device

How it works & useful details

How it works & limits

Parse the hexadecimal and embedded-IPv4 forms in RFC 4291. Output removes leading zeros, uses lowercase and compresses the first longest run of at least two zero groups, following RFC 5952.

IPv4-mapped addresses use mixed notation, such as ::ffff:192.0.2.1. Other addresses use hexadecimal notation. Zone IDs, URI brackets, prefixes and port suffixes are outside this address-only tool. Decimal and binary representations retain all 128 bits exactly.

Your working space

Explore the live view, then save copyable text and a downloadable file. Everything is calculated locally. Inputs are not stored; refreshing clears them.

These tools inspect address notation and ranges. They do not contact addresses, check availability or establish connectivity.