Convert from Kilometers to Meters Using Javascript Code With HTML

Hello Friends Today, through this tutorial, I will tell you Convert from Kilometers to Meters Using Javascript script code with html.

Here’s the HTML and JavaScript code for a Kilometers to Meters converter:


<!DOCTYPE html>
<html lang="en">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Kilometers to Meters Converter</title>
<h1>Kilometers to Meters Converter</h1>
<p>Enter the value in kilometers:</p>
<input type="number" id="kilometers" placeholder="Kilometers">
<button onclick="convertKilometersToMeters()">Convert</button>
<p id="result"></p>
<script src="script.js"></script> </body>

JavaScript (script.js):

function convertKilometersToMeters() {
const kilometers = parseFloat(document.getElementById("kilometers").value);
const meters = kilometers * 1000; // 1 kilometer = 1000 meters
const resultElement = document.getElementById("result");
if (!isNaN(kilometers)) {
resultElement.textContent = `${kilometers} kilometers is equal to ${meters} meters.`;
} else {
resultElement.textContent = "Please enter a valid number.";


1. HTML:
* Defines the basic structure of the web page including title, heading, input field, button, and result paragraph.
* Links the JavaScript file named “script.js” to be executed.
2. JavaScript (script.js):
* Defines a function `convertKilometersToMeters`.
* Retrieves the value entered in the “kilometers” input field using `document.getElementById`.
* Converts the value to a number using `parseFloat`.
* Calculates the equivalent meters by multiplying kilometers by 1000 (conversion factor).
* Retrieves the element with the ID “result” using `document.getElementById`.
* Checks if the entered value is a valid number using `isNaN` (is Not a Number).
* If valid, displays the conversion result using string interpolation.
* If invalid, displays an error message.

This code demonstrates a simple conversion tool using HTML and JavaScript. You can further enhance it by adding features like displaying the conversion factor or allowing users to choose from different units.