What is an IP address in binary?

An IPv4 address consists of four octets. Each octet is an 8-bit binary number. For example, 192.168.1.1 in binary is 11000000.10101000.00000001.00000001.

What is an IP address in hex?

IPv4 addresses are often expressed in hexadecimal, especially in network protocols. 192.168.1.1 in hex is C0.A8.01.01 or 0xC0A80101.

IP Address Converter — Binary, Decimal, Hex, Octal

IP addresses can be represented in multiple number formats: the familiar dotted-decimal notation (192.168.1.1), binary (used in network masks and routing), hexadecimal (common in protocols and packet captures), and octal (historically used in some UNIX utilities). This tool converts between all four formats for IPv4 addresses.

IPv4 Address Formats

Decimal: 192.168.1.1 — the standard human-readable notation
Binary: 11000000.10101000.00000001.00000001 — shows the bit pattern of each octet
Hex: C0.A8.01.01 or 0xC0A80101 — used in protocols and packet analysis
Octal: 0300.0250.01.01 — each octet as a 3-digit octal number

Why Convert IP Addresses?

Network engineers and security professionals frequently need to convert IP addresses between formats. Binary representation is essential for understanding subnet masks and CIDR notation. Hex is common in packet captures, ARP tables, and Windows Registry entries. Some legacy UNIX commands accept octal IP addresses.

Frequently Asked Questions

What is 127.0.0.1 in binary?

127.0.0.1 in binary is 01111111.00000000.00000000.00000001. The loopback address 127.0.0.1 in hex is 7F.00.00.01 or 0x7F000001.

What is the decimal value of an IP address?

An IPv4 address can be treated as a 32-bit unsigned integer. 192.168.1.1 = (192×16777216) + (168×65536) + (1×256) + 1 = 3232235777.

IP Address Converter online

Convert IPv4 addresses between binary, decimal, hex, and octal — runs in your browser

IPv4 Address Formats

Why Convert IP Addresses?

Frequently Asked Questions

What is 127.0.0.1 in binary?

What is the decimal value of an IP address?