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IPv4 Address Converter
Convert an IPv4 address between dotted-decimal, 32-bit integer, hexadecimal, binary, octal, and its in-addr.arpa reverse-DNS name.
This tool handles input and primary processing in your browser and is designed not to send the input to QuickKit’s server.
Representations
| Dotted decimal | — |
|---|---|
| 32-bit integer | — |
| Hexadecimal | — |
| Hex octets | — |
| Binary (octets) | — |
| Binary (32-bit) | — |
| Octal octets | — |
| Reverse DNS (PTR) | — |
| Legacy class (historical) | — |
How it works
Auto-detect recognizes dotted-decimal, a plain 32-bit integer, 0x-prefixed hex, 0b-prefixed binary, and dotted binary octets; pick a format explicitly for ambiguous input like "1010". The reverse-DNS name is the PTR record name (octets reversed, then in-addr.arpa). The legacy class is the historical classful range only: CIDR (RFC 4632, BCP 122) replaced classful addressing, so the class implies no prefix length.