What is your Body Mass Index?
About this app
Calculate your Body Mass Index (BMI) with this calculator supporting both METRIC and IMPERIAL unit systems.
What is your Body Mass Index? What is your Body Mass Index? METRIC IMPERIAL Height (cm) Weight (kg) Height (feet) Height (inches) Weight (lbs) Calculate Underweight Normal Weight Overweight Obese Calculate Again
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Source
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>What is your Body Mass Index?</title>
<meta name="description" content="Calculate your Body Mass Index (BMI) with this calculator supporting both METRIC and IMPERIAL unit systems.">
<meta name="keywords" content="BMI calculator, Body Mass Index calculator, METRIC, IMPERIAL">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
<link href="https://fonts.googleapis.com/css?family=Roboto" rel="stylesheet">
<script type="text/javascript">
try {
// App Javascript Goes Here. Place your entire script content inside the try block for error handling.
// This will run when the DOM is ready.
document.addEventListener("DOMContentLoaded", function() {
// Initialize the unit selection
var selectedUnit = "METRIC";
updateInputFields(selectedUnit);
// Handle unit selection change
$("input[name='unit']").change(function() {
selectedUnit = $(this).val();
updateInputFields(selectedUnit);
});
// Handle calculate button click
$("#calculate-button").click(function() {
var height, weight;
if (selectedUnit === "METRIC") {
height = parseFloat($("#metric-height").val());
weight = parseFloat($("#metric-weight").val());
} else {
var feet = parseFloat($("#imperial-feet").val());
var inches = parseFloat($("#imperial-inches").val());
var pounds = parseFloat($("#imperial-weight").val());
height = feet * 12 + inches;
weight = pounds;
}
var bmi;
if (selectedUnit === "METRIC") {
bmi = calculateMetricBMI(weight, height);
} else {
bmi = calculateImperialBMI(weight, height);
}
displayResult(bmi);
});
// Handle calculate again button click
$("#calculate-again-button").click(function() {
resetForm();
});
// Function to update input fields based on selected unit
function updateInputFields(unit) {
if (unit === "METRIC") {
$("#metric-inputs").show();
$("#imperial-inputs").hide();
} else {
$("#metric-inputs").hide();
$("#imperial-inputs").show();
}
}
// Function to calculate BMI for metric unit
function calculateMetricBMI(weight, height) {
var bmi = weight / Math.pow(height / 100, 2);
return bmi.toFixed(1);
}
// Function to calculate BMI for imperial unit
function calculateImperialBMI(weight, height) {
var bmi = (weight / Math.pow(height, 2)) * 703;
return bmi.toFixed(1);
}
// Function to display BMI result
function displayResult(bmi) {
$("#result").text("Your BMI: " + bmi);
var bmiCategory = getBMICategory(bmi);
highlightBMICategory(bmiCategory);
}
// Function to get BMI category
function getBMICategory(bmi) {
if (bmi < 18.5) {
return "Underweight";
} else if (bmi < 24.9) {
return "Normal Weight";
} else if (bmi < 29.9) {
return "Overweight";
} else {
return "Obese";
}
}
// Function to highlight BMI category
function highlightBMICategory(category) {
$(".bmi-category").removeClass("highlight");
$(".bmi-category:contains('" + category + "')").addClass("highlight");
}
// Function to reset the form
function resetForm() {
$("input[name='unit'][value='METRIC']").prop("checked", true);
updateInputFields("METRIC");
$("#metric-height").val("");
$("#metric-weight").val("");
$("#imperial-feet").val("");
$("#imperial-inches").val("");
$("#imperial-weight").val("");
$("#result").text("");
$(".bmi-category").removeClass("highlight");
}
});
} catch (error) {
// This will throw the error to the parent window.
throw error;
}
</script>
<style>
/* App CSS Goes Here */
body {
font-family: 'Roboto', sans-serif;
background-color: #f8f9fa;
}
.container {
max-width: 500px;
margin: 0 auto;
padding: 50px 20px;
background-color: #ffffff;
border-radius: 10px;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
h1 {
font-size: 24px;
font-weight: bold;
text-align: center;
margin-bottom: 30px;
}
.unit-selection {
display: flex;
justify-content: center;
margin-bottom: 30px;
}
.unit-selection label {
margin-right: 10px;
}
.input-group {
margin-bottom: 20px;
}
.input-group label {
display: block;
margin-bottom: 5px;
font-weight: bold;
}
.input-group input {
width: 100%;
padding: 10px;
font-size: 16px;
border: 1px solid #ced4da;
border-radius: 4px;
background-color: #f8f9fa;
}
.result {
font-weight: bold;
text-align: center;
margin-bottom: 20px;
}
.bmi-category {
text-align: center;
margin-bottom: 10px;
}
.bmi-category span {
display: inline-block;
width: 10px;
height: 10px;
margin-right: 5px;
border-radius: 2px;
}
.bmi-category.highlight span {
box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}
.bmi-category.underweight span {
background-color: #a0d6ff;
}
.bmi-category.normal span {
background-color: #28a745;
}
.bmi-category.overweight span {
background-color: #ffc107;
}
.bmi-category.obese span {
background-color: #dc3545;
}
.button-container {
display: flex;
justify-content: center;
}
.button-container button {
padding: 10px 20px;
font-size: 16px;
border: none;
border-radius: 4px;
background-color: #007bff;
color: #ffffff;
cursor: pointer;
}
</style>
</head>
<body>
<div id="main-container" class="container">
<h1>What is your Body Mass Index?</h1>
<div class="unit-selection">
<label>
<input type="radio" name="unit" value="METRIC" checked>
METRIC
</label>
<label>
<input type="radio" name="unit" value="IMPERIAL">
IMPERIAL
</label>
</div>
<div id="metric-inputs" class="input-group">
<label for="metric-height">Height (cm)</label>
<input type="number" id="metric-height" placeholder="Enter height in cm" min="140" max="210">
</div>
<div id="metric-weight" class="input-group">
<label for="metric-weight">Weight (kg)</label>
<input type="number" id="metric-weight" placeholder="Enter weight in kg" min="40" max="200">
</div>
<div id="imperial-inputs" class="input-group" style="display: none;">
<label for="imperial-feet">Height (feet)</label>
<input type="number" id="imperial-feet" placeholder="Enter height in feet" min="4" max="6">
</div>
<div class="input-group" id="imperial-inputs" style="display: none;">
<label for="imperial-inches">Height (inches)</label>
<input type="number" id="imperial-inches" placeholder="Enter height in inches" min="0" max="11">
</div>
<div class="input-group" id="imperial-inputs" style="display: none;">
<label for="imperial-weight">Weight (lbs)</label>
<input type="number" id="imperial-weight" placeholder="Enter weight in lbs" min="88" max="440">
</div>
<div class="button-container">
<button id="calculate-button">Calculate</button>
</div>
<div class="result" id="result"></div>
<div class="bmi-category underweight">
<span></span>Underweight
</div>
<div class="bmi-category normal">
<span></span>Normal Weight
</div>
<div class="bmi-category overweight">
<span></span>Overweight
</div>
<div class="bmi-category obese">
<span></span>Obese
</div>
<div class="button-container">
<button id="calculate-again-button">Calculate Again</button>
</div>
</div>
</body>
</html>
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