Decimal to IP

Decimal Input
IP Address Output

Decimal to IP Converter - User Manual

Welcome to the Decimal to IP Converter! This free online tool allows you to quickly and easily convert decimal numbers to IP addresses. In this manual, we will introduce the tool and provide detailed instructions on how to use it. Let's get started!

Purpose and Scenario

The Decimal to IP Converter is designed for networking professionals who need to work with IP addresses in decimal format. It can make it easy to convert between decimal and IP address formats, which is important for troubleshooting network issues or configuring network devices.

Benefits and Advantages

The benefits of using the Decimal to IP Converter include its ease of use, accessibility from any device with an internet connection, and ability to quickly convert decimal numbers to IP addresses without needing to perform manual calculations. It is also designed to be secure and protect your data, with all calculations performed locally on your device.

How to Use the Decimal to IP Converter

Using the Decimal to IP Converter is easy and straightforward. Follow the steps below to get started:

  1. Input or paste your decimal number into the input field. For example: 2130706433.
  2. Click the "Convert" button to convert the decimal number to an IP address. The tool will then convert the decimal number to an IP address, which will be displayed in the output field.
  3. If you want to copy the IP address to your clipboard, simply click the "Copy" button.

That's it! You can now use the converted IP address for your networking needs.

Implementation Details

The Decimal to IP Converter works by converting the input decimal number to binary format and then splitting the binary string into four 8-bit segments, which are then converted to decimal format to generate the IP address. Here is an example implementation in various programming languages:


def decimal_to_ip(decimal_string):
    decimal_value = int(decimal_string)
    binary_string = "{0:032b}".format(decimal_value)
    octets = [int(binary_string[i:i+8], 2) for i in range(0, 32, 8)]
    return ".".join(str(octet) for octet in octets)


#include <stdio.h>
#include <stdlib.h>
#include <string.h>

char *decimal_to_ip(const char *decimal_string) {
    long decimal_value = atol(decimal_string);
    char *ip_address = malloc(16);
    sprintf(ip_address, "%d.%d.%d.%d", (int)(decimal_value >> 24) & 0xFF, (int)(decimal_value >> 16) & 0xFF, (int)(decimal_value >> 8) & 0xFF, (int)decimal_value & 0xFF);
    return ip_address;


#include <iostream>
#include <sstream>
#include <bitset>

std::string decimal_to_ip(const std::string& decimal_string) {
    long decimal_value = std::stol(decimal_string);
    std::bitset<32> binary_value(decimal_value);
    std::ostringstream ip_address;
    ip_address << (int)(binary_value.to_ulong() >> 24) << "." << (int)((binary_value.to_ulong() >> 16) & 0xFF) << "." << (int)((binary_value.to_ulong() >> 8) & 0xFF) << "." << (int)(binary_value.to_ulong() & 0xFF);
    return ip_address.str();


function decimalToIp(decimalString) {
  const decimalValue = parseInt(decimalString);
  const binaryString = decimalValue.toString(2).padStart(32, "0");
  const octets = binaryString
    .map((binaryOctet) => parseInt(binaryOctet, 2));
  return octets.join(".");


public static String decimalToIp(String decimalString) {
    long decimalValue = Long.parseLong(decimalString);
    return String.format("%d.%d.%d.%d",
            (decimalValue >> 24) & 0xFF,
            (decimalValue >> 16) & 0xFF,
            (decimalValue >> 8) & 0xFF,
            decimalValue & 0xFF);


function decimal_to_ip($decimal_string) {
    $decimal_value = intval($decimal_string);
    $binary_string = str_pad(decbin($decimal_value), 32, "0", STR_PAD_LEFT);
    $octets = array_map("bindec", str_split($binary_string, 8));
    return implode(".", $octets);


In this manual, we have introduced the Decimal to IP Converter, provided instructions on how to use it, and explained its benefits and implementation details. We hope that this tool will be useful for your networking needs. If you have any questions or feedback, please don't hesitate to contact us. Thank you for using the Decimal to IP Converter!

Frequently Asked Questions (FAQ)

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