Use a browser-based number base converter to turn each decimal octet of an IP address, a value from 0 to 255, into its 8-bit binary form. It converts between binary, octal, decimal and hexadecimal on your device with no account.
An IPv4 address is written as four decimal octets separated by dots, and each octet is a single byte, so it ranges from 0 to 255 and fits in exactly 8 binary bits. Converting an octet to binary is how you see the network and host bits directly, which is useful when you are learning subnetting or checking a mask. A number base converter turns each decimal octet into its 8-bit pattern in one step.
Rather than divide by two repeatedly, you enter the decimal value and read the binary result. The tool works entirely in your browser, so nothing is uploaded, and it also handles octal and hexadecimal if you need those. It is free and needs no sign-up.
Each octet is a single byte, so it is exactly 8 binary bits.
A decimal octet runs from 0 to 255.
No. It runs in your browser, so nothing is sent anywhere.