Calculate Your Healthy Weight

:root {
–primary-color: #004a99;
–success-color: #28a745;
–background-color: #f8f9fa;
–text-color: #333;
–light-gray: #e9ecef;
–white: #ffffff;
–error-color: #dc3545;
}
body {
font-family: ‘Segoe UI’, Tahoma, Geneva, Verdana, sans-serif;
background-color: var(–background-color);
color: var(–text-color);
margin: 0;
padding: 0;
line-height: 1.6;
}
.container {
max-width: 960px;
margin: 20px auto;
padding: 20px;
background-color: var(–white);
box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
border-radius: 8px;
display: flex;
flex-direction: column;
gap: 20px;
}
h1, h2, h3 {
color: var(–primary-color);
text-align: center;
margin-bottom: 15px;
}
h1 { font-size: 2.2em; }
h2 { font-size: 1.8em; }
h3 { font-size: 1.4em; }
.calculator-wrapper {
background-color: var(–white);
padding: 30px;
border-radius: 8px;
border: 1px solid var(–light-gray);
}
.loan-calc-container {
display: flex;
flex-direction: column;
gap: 20px;
}
.input-group {
margin-bottom: 15px;
text-align: left;
}
.input-group label {
display: block;
margin-bottom: 8px;
font-weight: bold;
color: var(–primary-color);
}
.input-group input[type=”number”],
.input-group select {
width: calc(100% – 22px); /* Account for padding and border */
padding: 10px;
border: 1px solid var(–light-gray);
border-radius: 4px;
font-size: 1em;
color: var(–text-color);
}
.input-group input[type=”number”]:focus,
.input-group select:focus {
outline: none;
border-color: var(–primary-color);
box-shadow: 0 0 0 2px rgba(0, 74, 153, 0.2);
}
.input-group .helper-text {
font-size: 0.85em;
color: #6c757d;
margin-top: 5px;
}
.error-message {
color: var(–error-color);
font-size: 0.8em;
margin-top: 5px;
min-height: 1.2em; /* Prevent layout shifts */
}
.button-group {
display: flex;
gap: 10px;
justify-content: center;
margin-top: 25px;
}
button {
padding: 12px 20px;
border: none;
border-radius: 5px;
cursor: pointer;
font-size: 1em;
font-weight: bold;
transition: background-color 0.3s ease;
color: var(–white);
}
.btn-primary {
background-color: var(–primary-color);
}
.btn-primary:hover {
background-color: #003366;
}
.btn-secondary {
background-color: var(–success-color);
}
.btn-secondary:hover {
background-color: #218838;
}
.btn-reset {
background-color: var(–light-gray);
color: var(–text-color);
border: 1px solid #ccc;
}
.btn-reset:hover {
background-color: #ccc;
}
.results-container {
background-color: var(–primary-color);
color: var(–white);
padding: 25px;
border-radius: 8px;
text-align: center;
box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.1);
}
.results-container h3 {
color: var(–white);
margin-bottom: 15px;
}
#main-result {
font-size: 2.5em;
font-weight: bold;
margin: 10px 0 15px 0;
display: block;
padding: 10px;
border-radius: 5px;
}
.intermediate-results {
display: flex;
justify-content: space-around;
flex-wrap: wrap;
margin-top: 20px;
gap: 15px;
}
.intermediate-item {
text-align: center;
padding: 10px;
background-color: rgba(255, 255, 255, 0.15);
border-radius: 5px;
min-width: 120px;
}
.intermediate-item strong {
display: block;
font-size: 1.3em;
margin-bottom: 5px;
}
.intermediate-item span {
font-size: 0.9em;
opacity: 0.9;
}
.formula-explanation {
font-size: 0.9em;
color: #ddd;
margin-top: 15px;
font-style: italic;
}
table {
width: 100%;
border-collapse: collapse;
margin-top: 20px;
margin-bottom: 20px;
background-color: var(–white);
box-shadow: 0 1px 5px rgba(0,0,0,0.05);
}
th, td {
padding: 12px 15px;
text-align: left;
border-bottom: 1px solid var(–light-gray);
}
thead th {
background-color: var(–primary-color);
color: var(–white);
font-weight: bold;
}
tbody tr:nth-child(even) {
background-color: var(–background-color);
}
caption {
font-size: 1.1em;
font-weight: bold;
color: var(–primary-color);
margin-bottom: 10px;
text-align: left;
}
#chartContainer {
text-align: center;
margin-top: 30px;
padding: 20px;
background-color: var(–white);
border-radius: 8px;
border: 1px solid var(–light-gray);
}
canvas {
max-width: 100%;
height: auto;
}
.chart-caption {
font-size: 0.9em;
color: #6c757d;
margin-top: 10px;
}
.article-section {
background-color: var(–white);
padding: 30px;
margin-top: 20px;
border-radius: 8px;
border: 1px solid var(–light-gray);
}
.article-section h2, .article-section h3 {
text-align: left;
margin-bottom: 20px;
}
.article-section p {
margin-bottom: 15px;
}
.article-section ul, .article-section ol {
margin-left: 20px;
margin-bottom: 15px;
}
.article-section li {
margin-bottom: 8px;
}
.article-section code {
background-color: var(–light-gray);
padding: 3px 6px;
border-radius: 3px;
font-family: Consolas, Monaco, ‘Andale Mono’, ‘Ubuntu Mono’, monospace;
}
.faq-item {
border-bottom: 1px solid var(–light-gray);
padding-bottom: 10px;
margin-bottom: 10px;
}
.faq-item:last-child {
border-bottom: none;
margin-bottom: 0;
}
.faq-item strong {
display: block;
color: var(–primary-color);
margin-bottom: 5px;
cursor: pointer;
}
.faq-item p {
display: none; /* Hidden by default */
margin-top: 10px;
}
.faq-item.active p {
display: block;
}
.internal-links-section ul {
list-style: none;
padding: 0;
}
.internal-links-section li {
margin-bottom: 15px;
}
.internal-links-section a {
color: var(–primary-color);
text-decoration: none;
font-weight: bold;
}
.internal-links-section a:hover {
text-decoration: underline;
}
.internal-links-section span {
display: block;
font-size: 0.9em;
color: #6c757d;
margin-top: 3px;
}
.footer {
text-align: center;
margin-top: 30px;
font-size: 0.8em;
color: #6c757d;
}
@media (min-width: 768px) {
.container {
margin: 40px auto;
padding: 30px;
}
.button-group {
justify-content: flex-start;
}
.results-container {
text-align: left;
}
.intermediate-results {
justify-content: space-between;
}
#chartContainer {
text-align: center;
}
}

Understand your ideal weight range using our comprehensive healthy weight calculator. Input your height and weight to instantly get your Body Mass Index (BMI), weight category, and healthy weight zone. Learn how to calculate your healthy weight with detailed formulas and practical advice.

Healthy Weight Calculator

BMI vs. Healthy Weight Range

What is Calculate Your Healthy Weight?

Calculating your healthy weight involves assessing your current body composition and determining a weight range that is most conducive to good health and well-being. The most common method for this is calculating your Body Mass Index (BMI), which is a simple score derived from your height and weight. A healthy weight is generally considered to fall within a BMI range of 18.5 to 24.9. This calculation helps individuals and healthcare professionals understand potential weight-related health risks.

Who should use it? Anyone looking to understand their weight status in relation to health guidelines should use a healthy weight calculator. This includes individuals seeking to manage their weight, those concerned about potential health risks associated with being underweight or overweight, and people aiming for a balanced lifestyle. It’s a valuable tool for general health awareness, though it should not replace professional medical advice.

Common misconceptions: A significant misconception is that BMI is a perfect measure of body fat or overall health. BMI does not distinguish between muscle and fat mass, meaning very muscular individuals might have a high BMI without being unhealthy. It also doesn’t account for body fat distribution, age, sex, or ethnicity, all of which can influence health outcomes. Therefore, while useful, BMI is just one piece of the health puzzle. Understanding how to calculate your healthy weight accurately is the first step.

Healthy Weight Formula and Mathematical Explanation

The primary tool for determining a healthy weight range is the Body Mass Index (BMI). The formula is straightforward and widely recognized.

BMI Formula

The standard formula for BMI is:

BMI = Weight (kg) / (Height (m) * Height (m))

Where:

• Weight (kg) is your body weight measured in kilograms.
• Height (m) is your height measured in meters.

To use this formula, you first need to convert your height from centimeters to meters by dividing by 100. For instance, if you are 170 cm tall, your height in meters is 1.70 m.

Derivation and Interpretation

The BMI formula essentially provides a ratio of weight to height squared. This normalization helps to compare the weight status of people of different heights. A higher BMI generally indicates a higher proportion of body fat, while a lower BMI suggests being underweight.

Healthy Weight Range Calculation

Once BMI is calculated, it’s categorized into different weight status groups. The healthy weight range is defined by a BMI between 18.5 and 24.9. To find your *healthy weight range* in kilograms, you can rearrange the BMI formula:

Healthy Weight (kg) = BMI * (Height (m) * Height (m))

You would calculate this for both the lower bound (BMI 18.5) and the upper bound (BMI 24.9) of the healthy range to get your personal target weight zone.

Variables Table

Variables Used in Healthy Weight Calculation

Variable	Meaning	Unit	Typical Range
Height	Individual’s standing height	cm / m	Adult range: ~1.45m – 2.00m (145cm – 200cm)
Weight	Individual’s body mass	kg	Varies greatly based on height and health
BMI	Body Mass Index	kg/m²	Underweight: < 18.5 Healthy: 18.5 – 24.9 Overweight: 25.0 – 29.9 Obese: ≥ 30.0
Healthy Weight Range	Target weight zone for optimal health	kg	Depends on height; typically 50kg – 80kg for average adults, but varies
Gender	Biological sex	Categorical	Male, Female

Practical Examples (Real-World Use Cases)

Understanding how to calculate your healthy weight is best illustrated with examples.

Example 1: A Woman Aiming for Health

Sarah is a 30-year-old woman who stands 165 cm tall and weighs 75 kg. She wants to understand her current weight status and determine a healthy weight range.

• Inputs: Height = 165 cm, Weight = 75 kg, Sex = Female.
• Calculations:
  • Height in meters: 165 cm / 100 = 1.65 m
  • BMI = 75 / (1.65 * 1.65) = 75 / 2.7225 ≈ 27.55
  • Weight Category: Overweight (BMI 25.0 – 29.9)
  • Healthy Weight Lower Bound (BMI 18.5): 18.5 * (1.65 * 1.65) ≈ 50.7 kg
  • Healthy Weight Upper Bound (BMI 24.9): 24.9 * (1.65 * 1.65) ≈ 68.0 kg
• Results: Sarah’s BMI is approximately 27.55, placing her in the “Overweight” category. Her healthy weight range for her height is approximately 50.7 kg to 68.0 kg.
• Interpretation: Sarah might consider lifestyle changes to work towards achieving a weight within her healthy range, which could improve her overall health markers. She should consult a healthcare provider for personalized advice.

Example 2: A Man Checking His Status

David is a 45-year-old man who is 180 cm tall and weighs 82 kg. He’s generally active but wants to confirm he’s within a healthy weight zone.

• Inputs: Height = 180 cm, Weight = 82 kg, Sex = Male.
• Calculations:
  • Height in meters: 180 cm / 100 = 1.80 m
  • BMI = 82 / (1.80 * 1.80) = 82 / 3.24 ≈ 25.31
  • Weight Category: Overweight (BMI 25.0 – 29.9)
  • Healthy Weight Lower Bound (BMI 18.5): 18.5 * (1.80 * 1.80) ≈ 60.1 kg
  • Healthy Weight Upper Bound (BMI 24.9): 24.9 * (1.80 * 1.80) ≈ 80.7 kg
• Results: David’s BMI is approximately 25.31, just slightly into the “Overweight” category. His healthy weight range for his height is approximately 60.1 kg to 80.7 kg.
• Interpretation: David is very close to the upper limit of the healthy BMI range. While his muscle mass might contribute, he might benefit from a slight adjustment in diet or exercise to ensure he stays within or slightly above the healthy range, depending on his body composition and overall health status.

How to Use This Healthy Weight Calculator

Our Healthy Weight Calculator is designed for simplicity and ease of use, providing instant insights into your weight status. Follow these steps to get your personalized results:

1. Enter Your Height: In the “Height” field, input your height precisely in centimeters (e.g., enter 175 for 175 cm). Ensure accuracy for reliable results.
2. Enter Your Weight: In the “Weight” field, input your current weight in kilograms (e.g., enter 68 for 68 kg).
3. Select Your Sex: Choose either “Male” or “Female” from the dropdown menu. This helps in referencing standard health ranges.
4. Calculate: Click the “Calculate Healthy Weight” button. The calculator will process your inputs instantly.

How to Read Results:

• Primary Result (BMI): This is your calculated Body Mass Index value, displayed prominently. It’s the core metric used to assess weight status.
• Weight Category: This tells you whether your current BMI falls into the “Underweight,” “Healthy Weight,” “Overweight,” or “Obese” categories, based on standard WHO classifications.
• Healthy Weight Range: This shows the estimated weight range (in kg) that corresponds to a BMI between 18.5 and 24.9 for your specific height. This is your personal target zone for optimal health.
• Chart: The visual chart displays your current BMI against the calculated healthy weight range, providing a clear graphical representation.

Decision-Making Guidance:

Use the results as a starting point for health discussions. If your BMI falls outside the healthy range, consider consulting a healthcare professional. They can provide a more comprehensive assessment, considering factors like body composition, medical history, and lifestyle, to guide you on appropriate steps toward a healthier weight. Remember that this tool is for informational purposes and does not substitute professional medical advice.

Key Factors That Affect Healthy Weight Results

While the BMI calculation for healthy weight is objective, several factors can influence its interpretation and your overall health status. Understanding these nuances is crucial:

• Body Composition (Muscle vs. Fat): BMI doesn’t differentiate between muscle mass and fat mass. Athletes or individuals with high muscle density may have a high BMI but a low body fat percentage, indicating they are healthy. Conversely, someone with low muscle mass might have a “normal” BMI but still carry excess body fat. This is why it’s vital to know how to calculate your healthy weight but also to interpret it.
• Age: Metabolic rates and body composition can change with age. While the standard BMI ranges are applied broadly, age-related physiological changes might influence what constitutes an optimal weight for an individual. Older adults might maintain health with a slightly higher BMI than younger adults.
• Sex: Biological sex influences body composition, with men typically having more muscle mass and less body fat than women at the same height and weight. While BMI formulas are the same, the interpretation might consider these physiological differences, though standard ranges are often used universally. Our calculator uses sex as an input for slightly refined ranges.
• Genetics: Inherited factors play a role in metabolism, body shape, and fat distribution. Some individuals may be genetically predisposed to gaining weight or storing fat in certain areas, which BMI alone does not capture.
• Ethnicity: Research suggests that certain ethnic groups may have different risks associated with specific BMI levels. For example, individuals of Asian descent might have a higher risk of type 2 diabetes at a lower BMI compared to individuals of European descent.
• Bone Density and Frame Size: Individuals with larger bone structures or higher bone density might weigh more than those with smaller frames, even if they have similar body fat percentages. BMI does not account for skeletal differences.
• Health Conditions: Certain medical conditions (e.g., edema, pregnancy, specific diseases) can affect weight, making a standard BMI calculation less accurate or relevant without context. Always consult a doctor for personalized health advice.

Frequently Asked Questions (FAQ)

What is the most accurate way to determine a healthy weight?

While BMI is a widely used screening tool, a more comprehensive assessment includes body fat percentage measurements (like those from bioelectrical impedance analysis or DEXA scans), waist circumference, and a general health evaluation by a healthcare professional. BMI is a good starting point for understanding how to calculate your healthy weight.

Can children use this calculator?

This specific calculator is designed for adults. BMI calculation and healthy weight ranges for children and adolescents are different and require specialized growth charts that account for age and sex. Please consult a pediatrician for child-specific weight assessments.

Does BMI account for waist circumference?

No, the standard BMI calculation does not include waist circumference. High waist circumference is an indicator of abdominal obesity, which is linked to increased health risks even within a “normal” BMI range. It’s often used in conjunction with BMI for a more complete picture.

What if my BMI is in the healthy range, but I feel unhealthy?

This can happen if you have a low muscle mass and a higher body fat percentage (sometimes referred to as “skinny fat”). Factors like diet, physical activity levels, and overall lifestyle significantly impact health, regardless of BMI. Focus on a balanced diet and regular exercise for overall well-being.

What is the difference between healthy weight and ideal weight?

“Healthy weight” typically refers to a weight range associated with the lowest risk of weight-related diseases (often defined by BMI 18.5-24.9). “Ideal weight” is a more subjective term that might consider aesthetics or personal goals, not always directly tied to optimal health metrics. This calculator focuses on the medically recognized “healthy weight” range.

How often should I recalculate my healthy weight?

It’s beneficial to recalculate your BMI and check your weight status periodically, perhaps every 6-12 months, or after significant changes in diet, exercise, or lifestyle. Your weight and health status can change over time.

Can medication affect my weight and BMI?

Yes, many medications can cause weight gain or loss as a side effect. If you are taking medication and notice significant weight changes, discuss this with your doctor. They can help determine if the medication is a factor and if any adjustments are needed.

How do I interpret the healthy weight range if I’m very tall or very short?

The calculator automatically adjusts the healthy weight range based on your height. For very tall individuals, the range will be higher; for very short individuals, it will be lower. This ensures the range is tailored to your specific body size according to standard BMI guidelines.

Related Tools and Internal Resources

• Healthy Weight Calculator
  Instantly calculate your BMI and healthy weight range.
• Understanding BMI
  Deep dive into the Body Mass Index formula and its implications.
• Nutrition Guide for Healthy Eating
  Learn about balanced diets to support a healthy weight.
• Beginner Exercise Plan
  Get started with physical activity to complement your weight goals.
• Hydration Calculator
  Ensure you’re drinking enough water for overall health.
• Sleep Quality Tracker
  Understand the importance of sleep for weight management and health.

var heightInput = document.getElementById(‘height’);
var weightInput = document.getElementById(‘weight’);
var genderSelect = document.getElementById(‘gender’);
var heightError = document.getElementById(‘heightError’);
var weightError = document.getElementById(‘weightError’);
var genderError = document.getElementById(‘genderError’);
var mainResultDisplay = document.getElementById(‘main-result’);
var bmiResultDisplay = document.getElementById(‘bmiResult’);
var weightCategoryDisplay = document.getElementById(‘weightCategory’);
var healthyWeightRangeDisplay = document.getElementById(‘healthyWeightRange’);
var resultsContainer = document.getElementById(‘resultsContainer’);
var chart = null;
var chartContext = null;
var chartCanvas = document.getElementById(‘bmiChart’);

function validateInput(value, min, max, errorElement, fieldName) {
if (value === null || value === ”) {
errorElement.textContent = fieldName + ‘ cannot be empty.’;
return false;
}
var numValue = parseFloat(value);
if (isNaN(numValue)) {
errorElement.textContent = fieldName + ‘ must be a number.’;
return false;
}
if (numValue max) {
errorElement.textContent = fieldName + ‘ must be between ‘ + min + ‘ and ‘ + max + ‘.’;
return false;
}
errorElement.textContent = ”; // Clear error
return true;
}

function calculateHealthyWeight() {
var heightCm = parseFloat(heightInput.value);
var weightKg = parseFloat(weightInput.value);
var gender = genderSelect.value;

var isValidHeight = validateInput(heightInput.value, 50, 250, heightError, ‘Height’);
var isValidWeight = validateInput(weightInput.value, 10, 500, weightError, ‘Weight’);
var isValidGender = gender !== ”;

if (!isValidHeight || !isValidWeight || !isValidGender) {
resultsContainer.style.display = ‘none’;
return;
} else {
resultsContainer.style.display = ‘block’;
}

var heightM = heightCm / 100;
var bmi = weightKg / (heightM * heightM);
var bmiRounded = bmi.toFixed(2);

var weightCategory = ”;
var bmiLowerBound = 18.5;
var bmiUpperBound = 24.9;

if (bmi = 18.5 && bmi = 25 && bmi <= 29.9) {
weightCategory = 'Overweight';
} else {
weightCategory = 'Obese';
}

// Calculate healthy weight range
var healthyWeightMinKg = (bmiLowerBound * (heightM * heightM)).toFixed(2);
var healthyWeightMaxKg = (bmiUpperBound * (heightM * heightM)).toFixed(2);
var healthyWeightRangeText = healthyWeightMinKg + ' – ' + healthyWeightMaxKg + ' kg';

mainResultDisplay.textContent = bmiRounded;
bmiResultDisplay.textContent = bmiRounded;
weightCategoryDisplay.textContent = weightCategory;
healthyWeightRangeDisplay.textContent = healthyWeightRangeText;

updateChart(bmi, heightM, healthyWeightMinKg, healthyWeightMaxKg);
}

function resetCalculator() {
heightInput.value = '170';
weightInput.value = '70';
genderSelect.value = 'male';
heightError.textContent = '';
weightError.textContent = '';
genderError.textContent = '';
mainResultDisplay.textContent = '–';
bmiResultDisplay.textContent = '–';
weightCategoryDisplay.textContent = '–';
healthyWeightRangeDisplay.textContent = '–';
resultsContainer.style.display = 'none';
if (chart) {
chart.destroy();
chart = null;
}
}

function copyResults() {
var bmi = bmiResultDisplay.textContent;
var category = weightCategoryDisplay.textContent;
var healthyRange = healthyWeightRangeDisplay.textContent;
var height = heightInput.value;
var weight = weightInput.value;
var gender = genderSelect.value;

if (bmi === '–') {
alert("Please calculate the results first.");
return;
}

var resultText = "— Healthy Weight Calculation Results —\n\n";
resultText += "Height: " + height + " cm\n";
resultText += "Weight: " + weight + " kg\n";
resultText += "Sex: " + gender.charAt(0).toUpperCase() + gender.slice(1) + "\n\n";
resultText += "BMI: " + bmi + "\n";
resultText += "Weight Category: " + category + "\n";
resultText += "Healthy Weight Range: " + healthyRange + "\n\n";
resultText += "Assumptions: BMI formula used (Weight(kg) / Height(m)^2). Healthy range defined by BMI 18.5-24.9.";

navigator.clipboard.writeText(resultText).then(function() {
alert("Results copied to clipboard!");
}, function(err) {
console.error('Async: Could not copy text: ', err);
alert("Failed to copy results. Please copy manually.");
});
}

function updateChart(currentBmi, heightM, healthyMinKg, healthyMaxKg) {
if (!chartCanvas) return;
if (chart) {
chart.destroy(); // Destroy previous chart instance
}

var heightCm = parseFloat(heightInput.value);
if (isNaN(heightCm) || heightCm <= 0) return;

var heightSquared = heightM * heightM;
var weightKg = parseFloat(weightInput.value);
if (isNaN(weightKg) || weightKg <= 0) return;

// Generate points for the healthy weight range line
var weightsForHealthyBmi = [];
var bmValues = [18.5, 24.9]; // BMI boundaries for healthy range

bmValues.forEach(function(bmiVal) {
weightsForHealthyBmi.push({
x: bmiVal,
y: bmiVal * heightSquared
});
});

// Create the chart
chartContext = chartCanvas.getContext('2d');
chart = new Chart(chartContext, {
type: 'bar', // Changed to bar for better visual representation of ranges
data: {
labels: ['Your BMI', 'Healthy Range Min', 'Healthy Range Max'],
datasets: [{
label: 'Weight (kg)',
data: [weightKg, parseFloat(weightsForHealthyBmi[0].y), parseFloat(weightsForHealthyBmi[1].y)],
backgroundColor: [
'rgba(0, 74, 153, 0.7)', // Your BMI – Primary color
'rgba(40, 167, 69, 0.5)', // Healthy Range Min – Success color
'rgba(40, 167, 69, 0.5)' // Healthy Range Max – Success color
],
borderColor: [
'rgba(0, 74, 153, 1)',
'rgba(40, 167, 69, 1)',
'rgba(40, 167, 69, 1)'
],
borderWidth: 1
}]
},
options: {
responsive: true,
maintainAspectRatio: false,
scales: {
y: {
beginAtZero: true,
title: {
display: true,
text: 'Weight (kg)'
}
},
x: {
title: {
display: true,
text: 'Weight Status Metric'
}
}
},
plugins: {
title: {
display: true,
text: 'Your BMI vs. Healthy Weight Range (kg)',
font: {
size: 16
}
},
legend: {
display: false // Hide legend as labels are descriptive
}
}
}
});
}

// Initial calculation on load if values are present
document.addEventListener('DOMContentLoaded', function() {
// Add Chart.js library dynamically if not present
if (typeof Chart === 'undefined') {
var script = document.createElement('script');
script.src = 'https://cdn.jsdelivr.net/npm/chart.js';
script.onload = function() {
console.log('Chart.js loaded.');
// Call calculate function after script is loaded
calculateHealthyWeight();
};
script.onerror = function() {
console.error('Failed to load Chart.js library.');
};
document.head.appendChild(script);
} else {
calculateHealthyWeight(); // Calculate if Chart.js is already loaded
}
resultsContainer.style.display = 'none'; // Hide results initially
});

// Add event listeners for real-time updates
heightInput.addEventListener('input', calculateHealthyWeight);
weightInput.addEventListener('input', calculateHealthyWeight);
genderSelect.addEventListener('change', calculateHealthyWeight);

function toggleFaq(element) {
var faqItem = element.parentElement;
faqItem.classList.toggle('active');
}