Body Parts Weight Calculator: Estimate Your Body Composition
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Calculate Your Body Part Weights
Your Estimated Body Part Weights
— kg
Key Assumptions:
Total Weight: — kg
Head %: –%
Neck %: –%
Torso %: –%
Arm %: –%
Hand %: –%
Leg %: –%
Formula Used: Body Part Weight = Total Body Weight * (Body Part Percentage / 100)
Body Part Weight Distribution Table
| Body Part |
Estimated Weight (kg) |
Percentage of Total Weight (%) |
| Head |
— |
— |
| Neck |
— |
— |
| Torso |
— |
— |
| Arm (Each) |
— |
— |
| Hand (Each) |
— |
— |
| Leg (Each) |
— |
— |
| Foot (Each) |
| Total |
— |
— |
Body Part Weight Distribution Chart
What is a Body Parts Weight Calculator?
A Body Parts Weight Calculator is a specialized tool designed to estimate the weight of individual body segments (like the head, torso, arms, legs, etc.) based on a person's total body weight and estimated percentage contributions of each part. It helps users visualize how their overall mass is distributed across their physique, offering insights into body composition beyond just a total weight number.
Who should use it:
- Individuals interested in understanding their body composition in more detail.
- Athletes and fitness enthusiasts looking to analyze their physique for performance or training adjustments.
- Researchers or students studying anthropometry and biomechanics.
- Anyone curious about the physical makeup of the human body.
Common misconceptions:
- It's a precise measurement: This calculator provides an *estimate*. Actual body part weights vary significantly due to genetics, muscle mass, fat distribution, bone density, and individual anatomy.
- Percentages are universal: While typical ranges exist, the exact percentage for each body part is unique to each individual.
- It replaces professional assessment: This tool is for informational purposes and does not substitute for medical advice or professional body composition analysis (e.g., DEXA scans).
Body Parts Weight Calculator Formula and Mathematical Explanation
The core principle behind the Body Parts Weight Calculator is simple proportionality. It assumes that each body part contributes a certain percentage to the total body weight. The calculation involves basic arithmetic to determine the absolute weight of each part.
Step-by-step derivation:
- Input Total Body Weight: The user provides their total body weight (e.g., in kilograms).
- Input Percentage for Each Part: For each body part (head, neck, torso, arms, hands, legs, feet), the user inputs an estimated percentage of the total body weight it represents.
- Calculate Individual Part Weight: The weight of each body part is calculated using the formula:
Body Part Weight = Total Body Weight × (Body Part Percentage / 100)
- Summation Check: Ideally, the sum of all inputted percentages should approximate 100%. The calculator uses the provided percentages directly.
Variable explanations:
| Variable |
Meaning |
Unit |
Typical Range (%) |
| Total Body Weight |
The overall mass of the individual. |
Kilograms (kg) |
N/A |
| Body Part Percentage |
The estimated proportion of the total body weight attributed to a specific body part. |
Percentage (%) |
See input helper text for specific parts |
| Body Part Weight |
The calculated absolute weight of a specific body part. |
Kilograms (kg) |
N/A |
The accuracy of the Body Parts Weight Calculator heavily relies on the accuracy of the inputted percentages. These percentages are estimates and can vary significantly between individuals.
Practical Examples (Real-World Use Cases)
Understanding how the Body Parts Weight Calculator works in practice can be illuminating. Here are a couple of examples:
Example 1: An Average Adult Male
Scenario: John is a 35-year-old male weighing 80 kg. He's generally healthy and wants to understand his body's weight distribution.
Inputs:
- Total Body Weight: 80 kg
- Head %: 7%
- Neck %: 2%
- Torso %: 45%
- Arm % (Each): 5%
- Hand % (Each): 0.5%
- Leg % (Each): 15%
- Foot % (Each): 1.5%
Calculations:
- Head Weight: 80 kg * (7 / 100) = 5.6 kg
- Neck Weight: 80 kg * (2 / 100) = 1.6 kg
- Torso Weight: 80 kg * (45 / 100) = 36.0 kg
- Arm Weight (Each): 80 kg * (5 / 100) = 4.0 kg
- Hand Weight (Each): 80 kg * (0.5 / 100) = 0.4 kg
- Leg Weight (Each): 80 kg * (15 / 100) = 12.0 kg
- Foot Weight (Each): 80 kg * (15 / 100) = 1.2 kg
Outputs:
- Main Result (Total Estimated Weight): 80 kg (matches input)
- Intermediate Values: Head: 5.6 kg, Neck: 1.6 kg, Torso: 36.0 kg, Arm (Each): 4.0 kg, Hand (Each): 0.4 kg, Leg (Each): 12.0 kg, Foot (Each): 1.2 kg
Interpretation: John's torso represents the largest portion of his weight (36 kg), followed by his legs (12 kg each). This distribution is typical for many adults. Understanding these proportions can be a starting point for discussions about muscle vs. fat mass in different areas.
Example 2: A Lean Athlete
Scenario: Sarah is a professional cyclist weighing 65 kg. She has a high muscle mass, particularly in her legs.
Inputs:
- Total Body Weight: 65 kg
- Head %: 8%
- Neck %: 2%
- Torso %: 40%
- Arm % (Each): 4.5%
- Hand % (Each): 0.4%
- Leg % (Each): 17%
- Foot % (Each): 1.3%
Calculations:
- Head Weight: 65 kg * (8 / 100) = 5.2 kg
- Neck Weight: 65 kg * (2 / 100) = 1.3 kg
- Torso Weight: 65 kg * (40 / 100) = 26.0 kg
- Arm Weight (Each): 65 kg * (4.5 / 100) = 2.925 kg
- Hand Weight (Each): 65 kg * (0.4 / 100) = 0.26 kg
- Leg Weight (Each): 65 kg * (17 / 100) = 11.05 kg
- Foot Weight (Each): 65 kg * (1.3 / 100) = 0.845 kg
Outputs:
- Main Result (Total Estimated Weight): 65 kg
- Intermediate Values: Head: 5.2 kg, Neck: 1.3 kg, Torso: 26.0 kg, Arm (Each): 2.9 kg, Hand (Each): 0.3 kg, Leg (Each): 11.1 kg, Foot (Each): 0.8 kg (rounded)
Interpretation: Sarah's leg percentage (17%) is higher than the average, reflecting her athletic specialization. Her torso weight is proportionally lower compared to the average male, which is common in lean athletes. This detailed breakdown helps visualize the impact of training on body composition.
How to Use This Body Parts Weight Calculator
Using the Body Parts Weight Calculator is straightforward. Follow these steps to get your estimated body part weights:
- Enter Total Body Weight: In the "Total Body Weight" field, input your current weight in kilograms (kg). Ensure accuracy for the best results.
- Input Percentage Estimates: For each body part listed (Head, Neck, Torso, Arms, Hands, Legs, Feet), enter the estimated percentage of your total body weight that you believe each part represents. Use the provided helper text and typical ranges as a guide. Note: The percentages for arms, hands, legs, and feet are for *each* individual limb.
- Calculate: Click the "Calculate Weights" button. The calculator will instantly process your inputs.
- Review Results: The main result will display your total estimated weight (which should match your input). Below that, you'll see the calculated weight for each individual body part in kilograms. The "Key Assumptions" section reiterates your input percentages.
- Understand the Table and Chart: A table and a dynamic chart will visually represent the calculated weights and percentages, making it easier to compare different body parts.
- Copy Results: If you want to save or share your results, click the "Copy Results" button. This will copy the main result, intermediate values, and key assumptions to your clipboard.
- Reset: To start over or try different inputs, click the "Reset" button. This will restore the default percentage values.
How to read results: Focus on the calculated weights for each body part. Compare these to the typical ranges or to your own previous estimates. Look for significant deviations that might indicate areas of higher muscle mass, fat storage, or simply unique anatomy.
Decision-making guidance: While this calculator doesn't provide medical advice, the insights gained can inform decisions about targeted training, nutrition strategies, or discussions with healthcare professionals about body composition goals.
Key Factors That Affect Body Parts Weight Results
The estimates from the Body Parts Weight Calculator are influenced by several factors. Understanding these helps interpret the results:
- Genetics: Inherited traits play a significant role in body structure, bone density, muscle fiber type distribution, and fat storage patterns, all of which affect the weight of individual body parts.
- Muscle Mass: Individuals with higher muscle mass, especially athletes in strength-focused sports, will have heavier limbs and torsos compared to those with lower muscle mass, even at the same total body weight.
- Fat Distribution: Where adipose tissue is stored varies greatly. Some people store more fat in their abdomen (torso), while others might store more in their legs or arms. This directly impacts the weight of those segments.
- Bone Density and Structure: Larger frames and denser bones contribute more to overall weight. This can vary significantly between individuals and even between sexes.
- Age: Body composition changes with age. Muscle mass tends to decrease and fat mass may increase after a certain age, altering the weight distribution.
- Sex: Biological sex influences body composition, with typical differences in muscle mass distribution (e.g., men often have proportionally more upper body muscle) and fat storage patterns.
- Hydration Levels: While less significant for long-term estimates, short-term fluctuations in body water can slightly affect total weight and, consequently, the calculated part weights.
- Prosthetics or Amputations: For individuals with missing limbs or prosthetics, the standard percentage assumptions do not apply, and this calculator would not be suitable.
The Body Parts Weight Calculator uses generalized percentages. For a truly personalized understanding, consider consulting with a kinesiologist, physical therapist, or registered dietitian.
Frequently Asked Questions (FAQ)
Q1: How accurate is the Body Parts Weight Calculator?
A: This calculator provides an *estimate* based on user-inputted percentages. Actual body part weights vary greatly. It's a tool for conceptual understanding, not precise measurement.
Q2: What are typical percentage ranges for body parts?
A: While the calculator uses default values, typical ranges are: Head (7-8%), Neck (1.5-2.5%), Torso (40-50%), Arms (4.5-5.5% each), Hands (0.4-0.6% each), Legs (13-17% each), Feet (1-2% each). These are general guidelines.
Q3: Can I use this calculator if I'm overweight or underweight?
A: Yes, you can input your total body weight. However, the percentage estimates might need more careful consideration, as body composition differs significantly at extremes of weight.
Q4: Does the calculator account for muscle vs. fat?
A: No, it calculates total weight per body part based on overall percentage. It doesn't differentiate between muscle, fat, bone, or organs.
Q5: What if the percentages I enter don't add up to 100%?
A: The calculator uses the percentages you provide for each part individually. It doesn't enforce a 100% sum, as users might focus on specific parts or use slightly inaccurate estimates. The total weight output will always match your input total weight.
Q6: Should I use pounds (lbs) instead of kilograms (kg)?
A: This calculator is designed for kilograms (kg). If you use pounds, you'll need to convert your total weight to kg first (1 lb ≈ 0.453592 kg).
Q7: How often should I use this calculator?
A: You can use it whenever you want to check in on your body composition estimates, perhaps monthly or quarterly, especially if you're tracking changes through diet or exercise.
Q8: Can this calculator help me lose weight?
A: Indirectly. By helping you understand weight distribution, it might motivate targeted lifestyle changes. However, it doesn't provide weight loss plans. Consult a professional for personalized weight management advice.
Q9: What does the "Torso" include?
A: Typically, the torso includes the chest, abdomen, back, and pelvis. It's the largest segment and contains vital organs.
Related Tools and Internal Resources
var totalWeightInput = document.getElementById('totalWeight');
var headPercentageInput = document.getElementById('headPercentage');
var neckPercentageInput = document.getElementById('neckPercentage');
var torsoPercentageInput = document.getElementById('torsoPercentage');
var armPercentageInput = document.getElementById('armPercentage');
var handPercentageInput = document.getElementById('handPercentage');
var legPercentageInput = document.getElementById('legPercentage');
var footPercentageInput = document.getElementById('footPercentage');
var totalWeightError = document.getElementById('totalWeightError');
var headPercentageError = document.getElementById('headPercentageError');
var neckPercentageError = document.getElementById('neckPercentageError');
var torsoPercentageError = document.getElementById('torsoPercentageError');
var armPercentageError = document.getElementById('armPercentageError');
var handPercentageError = document.getElementById('handPercentageError');
var legPercentageError = document.getElementById('legPercentageError');
var footPercentageError = document.getElementById('footPercentageError');
var mainResultDisplay = document.getElementById('mainResult');
var headWeightDisplay = document.getElementById('headWeight');
var neckWeightDisplay = document.getElementById('neckWeight');
var torsoWeightDisplay = document.getElementById('torsoWeight');
var armWeightDisplay = document.getElementById('armWeight');
var handWeightDisplay = document.getElementById('handWeight');
var legWeightDisplay = document.getElementById('legWeight');
var footWeightDisplay = document.getElementById('footWeight');
var totalWeightAssumptionDisplay = document.getElementById('totalWeightAssumption');
var headPercAssumptionDisplay = document.getElementById('headPercAssumption');
var neckPercAssumptionDisplay = document.getElementById('neckPercAssumption');
var torsoPercAssumptionDisplay = document.getElementById('torsoPercAssumption');
var armPercAssumptionDisplay = document.getElementById('armPercAssumption');
var handPercAssumptionDisplay = document.getElementById('handPercAssumption');
var legPercAssumptionDisplay = document.getElementById('legPercAssumption');
var footPercAssumptionDisplay = document.getElementById('footPercAssumption');
var tableHeadWeight = document.getElementById('tableHeadWeight');
var tableNeckWeight = document.getElementById('tableNeckWeight');
var tableTorsoWeight = document.getElementById('tableTorsoWeight');
var tableArmWeight = document.getElementById('tableArmWeight');
var tableHandWeight = document.getElementById('tableHandWeight');
var tableLegWeight = document.getElementById('tableLegWeight');
var tableFootWeight = document.getElementById('tableFootWeight');
var tableTotalWeight = document.getElementById('tableTotalWeight');
var tableHeadPercentage = document.getElementById('tableHeadPercentage');
var tableNeckPercentage = document.getElementById('tableNeckPercentage');
var tableTorsoPercentage = document.getElementById('tableTorsoPercentage');
var tableArmPercentage = document.getElementById('tableArmPercentage');
var tableHandPercentage = document.getElementById('tableHandPercentage');
var tableLegPercentage = document.getElementById('tableLegPercentage');
var tableFootPercentage = document.getElementById('tableFootPercentage');
var tableTotalPercentage = document.getElementById('tableTotalPercentage');
var chart;
var chartContext;
function initializeChart() {
chartContext = document.getElementById('weightDistributionChart').getContext('2d');
chart = new Chart(chartContext, {
type: 'bar',
data: {
labels: ['Head', 'Neck', 'Torso', 'Arm (Each)', 'Hand (Each)', 'Leg (Each)', 'Foot (Each)'],
datasets: [{
label: 'Estimated Weight (kg)',
data: [0, 0, 0, 0, 0, 0, 0],
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'rgba(40, 167, 69, 0.6)', // Success Green
'rgba(255, 193, 7, 0.6)', // Warning Yellow
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display: false // Hide legend as labels are on the axis
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}
function updateChart(weights) {
if (!chart) {
initializeChart();
}
chart.data.datasets[0].data = [
weights.head,
weights.neck,
weights.torso,
weights.arm,
weights.hand,
weights.leg,
weights.foot
];
chart.update();
}
function validateInput(value, id, errorElement, min, max, allowEmpty = false) {
var errorMsg = "";
if (value === "" && !allowEmpty) {
errorMsg = "This field is required.";
} else if (value !== "") {
var numValue = parseFloat(value);
if (isNaN(numValue)) {
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}
if (errorElement) {
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}
return errorMsg === "";
}
function calculateWeights() {
var isValid = true;
var totalWeight = parseFloat(totalWeightInput.value);
isValid &= validateInput(totalWeightInput.value, 'totalWeight', totalWeightError, 0);
var headPercentage = parseFloat(headPercentageInput.value);
isValid &= validateInput(headPercentageInput.value, 'headPercentage', headPercentageError, 0, 100);
var neckPercentage = parseFloat(neckPercentageInput.value);
isValid &= validateInput(neckPercentageInput.value, 'neckPercentage', neckPercentageError, 0, 100);
var torsoPercentage = parseFloat(torsoPercentageInput.value);
isValid &= validateInput(torsoPercentageInput.value, 'torsoPercentage', torsoPercentageError, 0, 100);
var armPercentage = parseFloat(armPercentageInput.value);
isValid &= validateInput(armPercentageInput.value, 'armPercentage', armPercentageError, 0, 100);
var handPercentage = parseFloat(handPercentageInput.value);
isValid &= validateInput(handPercentageInput.value, 'handPercentage', handPercentageError, 0, 100);
var legPercentage = parseFloat(legPercentageInput.value);
isValid &= validateInput(legPercentageInput.value, 'legPercentage', legPercentageError, 0, 100);
var footPercentage = parseFloat(footPercentageInput.value);
isValid &= validateInput(footPercentageInput.value, 'footPercentage', footPercentageError, 0, 100);
if (!isValid) {
mainResultDisplay.textContent = "– kg";
updateDisplayValues(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
updateChart({ head: 0, neck: 0, torso: 0, arm: 0, hand: 0, leg: 0, foot: 0 });
return;
}
var headWeight = totalWeight * (headPercentage / 100);
var neckWeight = totalWeight * (neckPercentage / 100);
var torsoWeight = totalWeight * (torsoPercentage / 100);
var armWeight = totalWeight * (armPercentage / 100);
var handWeight = totalWeight * (handPercentage / 100);
var legWeight = totalWeight * (legPercentage / 100);
var footWeight = totalWeight * (footPercentage / 100);
var calculatedTotalWeight = headWeight + neckWeight + torsoWeight + (armWeight * 2) + (handWeight * 2) + (legWeight * 2) + (footWeight * 2);
var totalPercentage = headPercentage + neckPercentage + torsoPercentage + (armPercentage * 2) + (handPercentage * 2) + (legPercentage * 2) + (footPercentage * 2);
// Rounding for display
var roundedHeadWeight = headWeight.toFixed(2);
var roundedNeckWeight = neckWeight.toFixed(2);
var roundedTorsoWeight = torsoWeight.toFixed(2);
var roundedArmWeight = armWeight.toFixed(2);
var roundedHandWeight = handWeight.toFixed(2);
var roundedLegWeight = legWeight.toFixed(2);
var roundedFootWeight = footWeight.toFixed(2);
var roundedTotalWeight = totalWeight.toFixed(2); // Display input total weight
var roundedTotalPercentage = totalPercentage.toFixed(1);
updateDisplayValues(
roundedTotalWeight,
roundedHeadWeight, roundedNeckWeight, roundedTorsoWeight, roundedArmWeight, roundedHandWeight, roundedLegWeight, roundedFootWeight,
totalWeight.toFixed(2), headPercentage.toFixed(1), neckPercentage.toFixed(1), torsoPercentage.toFixed(1), armPercentage.toFixed(1), handPercentage.toFixed(1), legPercentage.toFixed(1), footPercentage.toFixed(1),
roundedHeadWeight, roundedNeckWeight, roundedTorsoWeight, roundedArmWeight, roundedHandWeight, roundedLegWeight, roundedFootWeight, // Table weights
headPercentage.toFixed(1), neckPercentage.toFixed(1), torsoPercentage.toFixed(1), armPercentage.toFixed(1), handPercentage.toFixed(1), legPercentage.toFixed(1), footPercentage.toFixed(1), // Table percentages
roundedTotalPercentage // Table total percentage
);
updateChart({
head: parseFloat(roundedHeadWeight),
neck: parseFloat(roundedNeckWeight),
torso: parseFloat(roundedTorsoWeight),
arm: parseFloat(roundedArmWeight),
hand: parseFloat(roundedHandWeight),
leg: parseFloat(roundedLegWeight),
foot: parseFloat(roundedFootWeight)
});
}
function updateDisplayValues(mainResult, headW, neckW, torsoW, armW, handW, legW, footW,
totalWeightAss, headPercAss, neckPercAss, torsoPercAss, armPercAss, handPercAss, legPercAss, footPercAss,
tableHeadW, tableNeckW, tableTorsoW, tableArmW, tableHandW, tableLegW, tableFootW,
tableHeadPerc, tableNeckPerc, tableTorsoPerc, tableArmPerc, tableHandPerc, tableLegPerc, tableFootPerc,
tableTotalPerc) {
mainResultDisplay.textContent = mainResult + " kg";
headWeightDisplay.textContent = "Head: " + headW + " kg";
neckWeightDisplay.textContent = "Neck: " + neckW + " kg";
torsoWeightDisplay.textContent = "Torso: " + torsoW + " kg";
armWeightDisplay.textContent = "Arm (Each): " + armW + " kg";
handWeightDisplay.textContent = "Hand (Each): " + handW + " kg";
legWeightDisplay.textContent = "Leg (Each): " + legW + " kg";
footWeightDisplay.textContent = "Foot (Each): " + footW + " kg";
totalWeightAssumptionDisplay.textContent = "Total Weight: " + totalWeightAss + " kg";
headPercAssumptionDisplay.textContent = "Head %: " + headPercAss + "%";
neckPercAssumptionDisplay.textContent = "Neck %: " + neckPercAss + "%";
torsoPercAssumptionDisplay.textContent = "Torso %: " + torsoPercAss + "%";
armPercAssumptionDisplay.textContent = "Arm %: " + armPercAss + "%";
handPercAssumptionDisplay.textContent = "Hand %: " + handPercAss + "%";
legPercAssumptionDisplay.textContent = "Leg %: " + legPercAss + "%";
footPercAssumptionDisplay.textContent = "Foot %: " + footPercAss + "%";
tableHeadWeight.textContent = tableHeadW;
tableNeckWeight.textContent = tableNeckW;
tableTorsoWeight.textContent = tableTorsoW;
tableArmWeight.textContent = tableArmW;
tableHandWeight.textContent = tableHandW;
tableLegWeight.textContent = tableLegW;
tableFootWeight.textContent = tableFootW;
tableTotalWeight.textContent = (parseFloat(tableHeadW) + parseFloat(tableNeckW) + parseFloat(tableTorsoW) + (parseFloat(tableArmW)*2) + (parseFloat(tableHandW)*2) + (parseFloat(tableLegW)*2) + (parseFloat(tableFootW)*2)).toFixed(2);
tableHeadPercentage.textContent = tableHeadPerc;
tableNeckPercentage.textContent = tableNeckPerc;
tableTorsoPercentage.textContent = tableTorsoPerc;
tableArmPercentage.textContent = tableArmPerc;
tableHandPercentage.textContent = tableHandPerc;
tableLegPercentage.textContent = tableLegPerc;
tableFootPercentage.textContent = tableFootPerc;
tableTotalPercentage.textContent = tableTotalPerc;
}
function resetForm() {
document.getElementById('calculatorForm').reset();
// Set default percentages
headPercentageInput.value = 7;
neckPercentageInput.value = 2;
torsoPercentageInput.value = 45;
armPercentageInput.value = 5;
handPercentageInput.value = 0.5;
legPercentageInput.value = 15;
footPercentageInput.value = 1.5;
// Clear errors
totalWeightError.textContent = "";
headPercentageError.textContent = "";
neckPercentageError.textContent = "";
torsoPercentageError.textContent = "";
armPercentageError.textContent = "";
handPercentageError.textContent = "";
legPercentageError.textContent = "";
footPercentageError.textContent = "";
calculateWeights(); // Recalculate with defaults
}
function copyResults() {
var mainResult = mainResultDisplay.textContent;
var intermediateValues = [
headWeightDisplay.textContent,
neckWeightDisplay.textContent,
torsoWeightDisplay.textContent,
armWeightDisplay.textContent,
handWeightDisplay.textContent,
legWeightDisplay.textContent,
footWeightDisplay.textContent
];
var assumptions = [
totalWeightAssumptionDisplay.textContent,
headPercAssumptionDisplay.textContent,
neckPercAssumptionDisplay.textContent,
torsoPercAssumptionDisplay.textContent,
armPercAssumptionDisplay.textContent,
handPercAssumptionDisplay.textContent,
legPercAssumptionDisplay.textContent,
footPercAssumptionDisplay.textContent
];
var textToCopy = "— Body Parts Weight Results —\n\n";
textToCopy += "Main Result: " + mainResult + "\n\n";
textToCopy += "Estimated Weights:\n";
intermediateValues.forEach(function(item) {
textToCopy += "- " + item + "\n";
});
textToCopy += "\nKey Assumptions:\n";
assumptions.forEach(function(item) {
textToCopy += "- " + item + "\n";
});
navigator.clipboard.writeText(textToCopy).then(function() {
// Optional: Show a confirmation message
var copyButton = document.querySelector('button.secondary');
var originalText = copyButton.textContent;
copyButton.textContent = 'Copied!';
setTimeout(function() {
copyButton.textContent = originalText;
}, 2000);
}).catch(function(err) {
console.error('Failed to copy text: ', err);
// Optional: Show an error message
});
}
// Add event listeners for real-time updates
totalWeightInput.addEventListener('input', calculateWeights);
headPercentageInput.addEventListener('input', calculateWeights);
neckPercentageInput.addEventListener('input', calculateWeights);
torsoPercentageInput.addEventListener('input', calculateWeights);
armPercentageInput.addEventListener('input', calculateWeights);
handPercentageInput.addEventListener('input', calculateWeights);
legPercentageInput.addEventListener('input', calculateWeights);
footPercentageInput.addEventListener('input', calculateWeights);
// Initialize FAQ toggles
var faqQuestions = document.querySelectorAll('.faq-question');
faqQuestions.forEach(function(question) {
question.addEventListener('click', function() {
var answer = this.nextElementSibling;
if (answer.style.display === 'block') {
answer.style.display = 'none';
} else {
answer.style.display = 'block';
}
});
});
// Initial calculation on page load
document.addEventListener('DOMContentLoaded', function() {
resetForm(); // Load with default values and calculate
});
// Include Chart.js library (replace with actual CDN or local path if needed)
// For this standalone HTML, we'll assume Chart.js is available globally or included via CDN.
// If running this locally, you'd need to add:
//
// before this script tag.
// For this output, we assume it's handled externally or the user will add it.
// If Chart.js is not available, the chart will not render.
<!– NOTE: For the chart to render, you MUST include the Chart.js library.
Add this line within the or before the closing tag:
–>