IP converter

The same address, written another way.

Convert IPv4 and IPv6 addresses between dotted, decimal, hexadecimal, and binary notation, with IPv4-mapped IPv6 and reverse DNS names.

IP address converter

Runs in your browser
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One address, several notations

An IPv4 address is a 32-bit number and an IPv6 address a 128-bit number. Dotted and colon notation are just readable ways to write them. Databases, firewalls, and logs often store the integer or hexadecimal form instead.

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The conversion is plain arithmetic in your browser. The address is not sent to our server, and nothing is looked up or probed.