How to Make Radio Button Selected by Default in HTML

In this tutorial, you will learn how to make radio button selected by default in HTML. When you are creating a form, you want to create radio button groups, so that the user can select only one radio button in a given group. Radio buttons are typically small circles, which are filled when selected.

To create radio button groups, you have to use an input element with the type value of radio, and to make the radio button selected by default, you have to use the HTML checked attribute.

In the following example, we will make the radio button selected by default by using HTML checked attribute. Please have a look over the code example and the steps given below.


  • In the HTML file, we have 3 elements (div, h3, and input). The div element is just a wrapper for the rest of the elements.
  • The h3 is a heading tag with some content.
  • We have 2 inputs with type value radio to select the gender and the
    first input element has a checked attribute. As a result, the first radio button will be checked/selected by default.
  • In the head element, we have added a stylesheet (style.css) by using the link element.
<!DOCTYPE html>
<html lang="en">

    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Radio button selected by default</title>
    <link rel="stylesheet" href="style.css">

        <input type="radio" name="gender" value="male" checked>Male
        <input type="radio" name="gender" value="fmale">Female



We are selecting the div and setting the text-align property value to center to horizontally center align the div.

div {
    text-align: center;