A short companion for IPv4 Address Converter: when it is useful, what it expects, and what to check before using the result.
What it does
Convert an IPv4 address between dotted-decimal, a single 32-bit integer, hexadecimal, octal and binary, and show the four octets broken out.
Use the tool
Open IPv4 Address Converter, add the input the tool asks for, run it, and check the output before using it elsewhere.
Input and output
- Input: text.
- Output: text.
- Category: Network.
Privacy and processing
Processing happens locally in your browser. This tool does not upload the input to ilham.dev.
Questions
Why does 127.0.0.1 become 2130706433?
The four octets are the bytes of one 32-bit number: 127×256³ + 0×256² + 0×256 + 1. That is why some sites accept the decimal form as the same address.
Why would I need the integer form?
Firewalls, access rules and some APIs store addresses as integers because they are cheaper to compare and range-check than strings.
Related guide
For broader background, see Network Debugging Notes.