What is the binary representation of an IP address?

Every IPv4 address is a 32-bit number split into four 8-bit groups called octets. Each octet is written in decimal (0–255) in the familiar dotted notation, but underneath it is 8 binary digits. For example, 192 becomes 11000000 in binary.

Why is each octet exactly 8 bits?

IPv4 uses 32 bits total divided equally into four groups. Eight bits per group allows values from 0 (00000000) to 255 (11111111), which maps neatly to the dotted-decimal notation we use every day.

How does this relate to subnet masks?

A subnet mask like 255.255.255.0 is also a 32-bit number. In binary it is 11111111.11111111.11111111.00000000. The consecutive 1-bits define the network portion; the 0-bits define the host portion. Converting both the IP and mask to binary makes CIDR calculations visual and intuitive.

What is the hexadecimal value used for?

Hexadecimal (base-16) is a compact way to represent binary. Every 4 bits become one hex digit, so a 32-bit IP address becomes exactly 8 hex digits. Packet capture tools and low-level network code often display IPs in hex format.

Does this tool support IPv6?

No. This tool is specific to IPv4 (32-bit) addresses. IPv6 uses 128-bit addresses with a completely different notation and would require a separate converter.

IP Address to Binary Converter

Name: IP Address to Binary Converter
Availability: InStock
Author: Nham Vu

Enter any IPv4 address and instantly see its full 32-bit binary representation, octet by octet.

IPv4 Address

Enter IP address

Quick examples

Enter an IPv4 address and click Convert

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Summary

Enter any IPv4 address and instantly see its full 32-bit binary representation, octet by octet.

How it works

Enter an IPv4 address in dotted-decimal format (e.g. 192.168.1.1).
Each octet (0–255) is converted to an 8-bit binary number, padded with leading zeros.
The four 8-bit groups are displayed side by side for easy reading.
The full 32-bit binary string and hexadecimal value are shown below.
Use the Copy buttons to grab any representation to your clipboard.

Use cases

Study how IPv4 addresses map to binary for networking exams.
Verify subnet mask calculations by inspecting the binary form.
Convert IP ranges to binary when designing access control lists.
Debug CIDR notation issues by viewing the host and network bits.
Teach students the relationship between decimal and binary octets.
Quickly cross-check hexadecimal IP representations in packet captures.

Frequently Asked Questions

Last updated: 2026-06-10 · Reviewed by Nham Vu

IP Address to Binary Converter

IPv4 Address

Octet Breakdown

32-Bit Binary String

Dotted Binary

Hexadecimal

Decimal (32-bit integer)