Skip to content

Decimal to IP Converter

Convert decimal numbers to IPv4 addresses.

Code Examples

function decimalToIp(num) {
  return [
    (num >>> 24) & 255,
    (num >>> 16) & 255,
    (num >>> 8) & 255,
    num & 255
  ].join('.');
}
decimalToIp(3232235777); // "192.168.1.1"

Frequently Asked Questions

How do I convert a decimal to an IP address?

Extract each octet by dividing and using modulo. For 3232235777: octet4=1, octet3=1, octet2=168, octet1=192 → 192.168.1.1

What is the valid range for an IPv4 decimal?

0 to 4294967295 (2³² - 1). 0.0.0.0 is decimal 0 and 255.255.255.255 is decimal 4294967295. Anything outside that range is not a valid IPv4 address.

Why do some browsers accept a plain number as a URL?

Historically, browsers accept the integer form of an IPv4 address, so http://3232235777 resolves to http://192.168.1.1. Attackers sometimes use this to obfuscate links, which is one reason to recognize the format.

Related Tools

IP to Decimal Converter

Convert IPv4 addresses to decimal numbers.

Universal Base Converter & Number Inspector

Convert numbers between any bases from 2 to 36 and inspect the result: signed/unsigned views, bit width, byte order, and code snippets.

This tool runs entirely in your browser - nothing you enter is uploaded or stored.