About this tool
Convert an IPv4 address into its 32-bit integer, hexadecimal and dotted-binary forms, and turn an integer back into an address, all in your browser.
Frequently asked questions
How is the integer computed?
Each octet is weighted by 256: a.b.c.d becomes ((a×256 + b)×256 + c)×256 + d, a 32-bit unsigned value.
What values are accepted?
Four octets each 0–255 for the address, and an integer from 0 to 4294967295 for the reverse direction.