Free tool · Addressing

IPv6 Expand & Compress

Expand to full form or compress IPv6 to its shortest notation.

IPv6 address2001:db8::1 or full form

Compressed2001:db8::1

Expanded (full)2001:0db8:0000:0000:0000:0000:0000:0001

About this tool

Free IPv6 expander and compressor. Convert any IPv6 address between its fully-expanded 8-group form and its shortest RFC 5952 compressed notation, with validation. Everything runs entirely in your browser — nothing you type is sent to a server.

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