IP Address and Binary Conversion Guide

Understanding IP addresses in binary format is essential for networking, subnetting, and security.

IP Address Basics

IPv4 Format

• 4 octets (bytes)
• Each octet: 0-255
• Example: 192.168.1.1
• Total: 32 bits

Binary Representation

192.168.1.1 in binary:
192 = 11000000
168 = 10101000
1   = 00000001
1   = 00000001

Full: 11000000.10101000.00000001.00000001

Conversion Examples

IP to Binary

function ipToBinary(ip) {
  return ip.split('.')
    .map(octet => parseInt(octet).toString(2).padStart(8, '0'))
    .join('.');
}

ipToBinary('192.168.1.1');
// '11000000.10101000.00000001.00000001'

Binary to IP

function binaryToIp(binary) {
  return binary.split('.')
    .map(octet => parseInt(octet, 2))
    .join('.');
}

binaryToIp('11000000.10101000.00000001.00000001');
// '192.168.1.1'

Subnet Masks

Common Subnet Masks

CIDR	Subnet Mask	Binary	Hosts
/8	255.0.0.0	11111111.00000000...	16M
/16	255.255.0.0	11111111.11111111...	65K
/24	255.255.255.0	11111111...11111111.00000000	254
/32	255.255.255.255	All 1s	1

Calculate Network Address

function getNetworkAddress(ip, mask) {
  const ipParts = ip.split('.').map(Number);
  const maskParts = mask.split('.').map(Number);

  const network = ipParts.map((octet, i) => octet & maskParts[i]);
  return network.join('.');
}

getNetworkAddress('192.168.1.100', '255.255.255.0');
// '192.168.1.0'

Special IP Addresses

Address	Purpose
127.0.0.1	Localhost
0.0.0.0	Any address
255.255.255.255	Broadcast
10.x.x.x	Private Class A
172.16-31.x.x	Private Class B
192.168.x.x	Private Class C

IPv6 Preview

IPv6: 2001:0db8:85a3:0000:0000:8a2e:0370:7334
128 bits (vs 32 for IPv4)

Try Our IP Tools

• IP to Binary - Convert IP to binary
• Binary to IP - Convert binary to IP
• Number Base Converter - General base conversion

Conclusion

Binary understanding is fundamental for network configuration and troubleshooting.