— kg Lean Body Mass— kg Current Weight— kg Target Weight
The ideal weight for abs is calculated by first determining your Lean Body Mass (LBM). This is done by subtracting your current fat mass from your current total weight. We then use your LBM and your target body fat percentage to estimate the total weight you'd need to be at to achieve those defined abs.
Formula:
1. Fat Mass = Total Weight * (Body Fat % / 100)
2. Lean Body Mass (LBM) = Total Weight – Fat Mass
3. Target Weight = LBM / (1 – (Target Body Fat % / 100))
Weight vs. Body Fat Percentage
Trend of how your weight needs to change to reach a target body fat percentage for abs.
Weight and Body Composition Breakdown
Metric
Current Value
Target Value
Total Weight (kg)
—
—
Lean Body Mass (kg)
—
—
Fat Mass (kg)
—
—
Body Fat Percentage (%)
—
—
Comparison of your current body composition versus the target for abdominal definition.
What is Ideal Weight for Abs?
The concept of "ideal weight for abs" refers to a body weight range where an individual's body fat percentage is low enough for their abdominal muscles to become visible. Unlike a general ideal weight calculation (like BMI), which focuses on overall health and mortality risk, this metric is purely aesthetic and performance-driven. It's about achieving a specific level of leanness in the midsection.
Who should use it: This calculator is for individuals who are actively engaged in fitness, strength training, or body recomposition, and whose primary goal is to achieve visible abdominal muscles. This includes bodybuilders, fitness enthusiasts, athletes, and anyone aiming for a more sculpted physique.
Common misconceptions:
It's only about weight: Visible abs are primarily determined by body fat percentage, not just the number on the scale. You can be at a "healthy" weight by BMI standards but still have your abs hidden under a layer of subcutaneous fat.
Lower weight always means visible abs: Simply losing weight without considering body composition can lead to loss of both fat and muscle. The goal is to reduce fat mass while preserving lean muscle mass.
Genetics don't matter: While genetics play a role in fat distribution and muscle shape, they don't dictate whether abs can be achieved. Consistent training and diet are paramount.
Abs are achieved solely through ab exercises: Ab exercises strengthen the core muscles, but they won't become visible until overall body fat is reduced.
Ideal Weight for Abs Calculator Formula and Mathematical Explanation
This calculator uses a common approach to estimate the weight you need to reach a body fat percentage where abdominal muscles are typically defined. The core principle is to work backward from your lean body mass (LBM).
Step-by-step derivation:
Calculate current fat mass: We first determine how much of your current weight is fat.
Calculate current lean body mass (LBM): This is your total weight minus your fat mass. LBM includes muscle, bone, organs, and water. This is the weight you want to preserve.
Estimate target total weight: Using your LBM and your desired *target body fat percentage*, we calculate what your total body weight would need to be. The formula rearranges the body fat percentage definition: Total Weight = LBM / (1 – (Target Body Fat % / 100)).
Variable explanations:
Height: While not directly in the core calculation for weight, height is a fundamental metric for body composition analysis and often influences perceived body proportions. (Used indirectly as context)
Current Body Fat Percentage: The percentage of your total body weight that is fat.
Target Body Fat Percentage for Abs: The desired body fat percentage at which abdominal muscles are typically visible. This varies slightly per individual but commonly falls between 8% and 15%.
Current Weight: Your current total body weight.
Lean Body Mass (LBM): The weight of everything in your body that is not fat.
Fat Mass: The weight of the fat tissue in your body.
Ideal Weight for Abs (Target Weight): The estimated total body weight required to achieve the target body fat percentage, assuming your LBM remains constant.
Variables Table:
Variable
Meaning
Unit
Typical Range / Notes
Height
Individual's stature
cm / in
e.g., 150 – 200 cm
Current Body Fat Percentage
Proportion of fat in the body
%
e.g., 15% – 35% (for general population)
Target Body Fat Percentage for Abs
Desired body fat for abdominal visibility
%
8% – 15% (common range)
Current Weight
Total body weight
kg / lbs
Variable, depends on individual
Lean Body Mass (LBM)
Weight excluding fat mass
kg / lbs
Calculated
Fat Mass
Weight of body fat
kg / lbs
Calculated
Ideal Weight for Abs
Target total weight for visible abs
kg / lbs
Calculated
Practical Examples (Real-World Use Cases)
Example 1: The Fitness Enthusiast
Scenario: Sarah is a 30-year-old woman who works out regularly but wants to achieve visible abs. She is 165 cm tall, weighs 65 kg, and estimates her current body fat percentage at 22%. She aims to reach 14% body fat for defined abs.
Inputs:
Height: 165 cm
Current Body Fat Percentage: 22%
Target Body Fat Percentage for Abs: 14%
Current Weight: 65 kg
Calculations:
Fat Mass = 65 kg * (22 / 100) = 14.3 kg
Lean Body Mass (LBM) = 65 kg – 14.3 kg = 50.7 kg
Target Weight = 50.7 kg / (1 – (14 / 100)) = 50.7 kg / 0.86 = 58.95 kg (approx. 59 kg)
Interpretation: Sarah needs to lose approximately 6 kg (65 kg – 59 kg) of fat to reach a weight of about 59 kg at 14% body fat, at which point her abs should become visible. Her LBM of 50.7 kg is what she needs to maintain.
Example 2: The Lean Male Athlete
Scenario: Mark is a 25-year-old male athlete, 180 cm tall, weighing 80 kg. He has a good amount of muscle but wants to get his abs sharper. His current body fat is 18%, and he wants to get down to 10% body fat.
Inputs:
Height: 180 cm
Current Body Fat Percentage: 18%
Target Body Fat Percentage for Abs: 10%
Current Weight: 80 kg
Calculations:
Fat Mass = 80 kg * (18 / 100) = 14.4 kg
Lean Body Mass (LBM) = 80 kg – 14.4 kg = 65.6 kg
Target Weight = 65.6 kg / (1 – (10 / 100)) = 65.6 kg / 0.90 = 72.89 kg (approx. 73 kg)
Interpretation: Mark needs to lose about 7 kg (80 kg – 73 kg) of fat. He will reach his goal weight of approximately 73 kg at 10% body fat, revealing his abs, while preserving his lean muscle mass of 65.6 kg.
How to Use This Ideal Weight for Abs Calculator
Enter Your Height: Input your height in centimeters (cm). This provides context for your body size.
Enter Your Current Body Fat Percentage: Accurately estimate or measure your current body fat percentage. This is crucial for determining your current fat mass and lean body mass.
Enter Your Target Body Fat Percentage: Specify the body fat percentage you aim to achieve for visible abs. A range of 8-15% is common, with lower percentages leading to more definition but potentially requiring more effort.
Enter Your Current Weight: Input your current total body weight in kilograms (kg).
Click Calculate: The calculator will instantly display your estimated ideal weight for visible abs, along with your current lean body mass and target weight.
How to read results:
Primary Result (Ideal Weight for Abs): This is your target total body weight in kg required to achieve your desired body fat percentage.
Lean Body Mass: This shows how much of your current weight is muscle, bone, etc. This is the weight you want to maintain.
Current Weight: Your starting point.
Target Weight: The weight you aim to reach. The difference between Current Weight and Target Weight is the amount of fat you likely need to lose.
Table and Chart: These provide a visual breakdown and comparison of your current vs. target body composition.
Decision-making guidance:
The results from this calculator are estimates. They suggest a weight loss target. To achieve this, you'll need a combination of a caloric deficit (through diet) and consistent exercise (both cardio for fat loss and strength training to preserve/build muscle). Focus on sustainable lifestyle changes rather than quick fixes.
Key Factors That Affect Ideal Weight for Abs Results
While the calculator provides a mathematical estimate, several real-world factors influence how quickly and effectively you can reach your goal weight for abs:
Muscle Mass: Individuals with higher muscle mass will have a higher LBM and consequently a higher target weight for the same body fat percentage. Muscle is denser than fat, so aiming for a very low body fat percentage with significant muscle requires careful programming.
Genetics and Fat Distribution: Where your body stores fat is genetically determined. Some people store fat more readily in the abdominal area, making it harder to reveal abs even at a relatively low overall body fat percentage.
Metabolic Rate: Your basal metabolic rate (BMR) and overall metabolism affect how many calories you burn at rest and during activity. A higher metabolism can facilitate fat loss.
Dietary Adherence: The calculator assumes you can achieve and maintain your target body fat percentage. This requires a disciplined diet with a consistent caloric deficit and adequate protein intake to preserve muscle.
Training Regimen: A well-rounded fitness program is essential. Strength training helps maintain LBM, while cardiovascular exercise aids in creating a calorie deficit for fat loss. Specific core training strengthens the abs themselves.
Hormonal Balance: Hormones like cortisol (stress hormone) and testosterone can influence fat storage and muscle growth, impacting body composition and the ease of achieving visible abs. Stress management and adequate sleep are vital.
Age: Metabolism tends to slow down with age, and hormonal changes can affect body composition, potentially making it more challenging to achieve very low body fat percentages.
Hydration and Inflammation: Proper hydration is crucial for metabolic processes. Chronic inflammation can hinder fat loss and affect body composition.
Frequently Asked Questions (FAQ)
What if my current body fat percentage is very high?
If your current body fat percentage is significantly higher than your target, the calculator might suggest a large weight loss. It's important to approach this gradually and healthily, focusing on sustainable lifestyle changes rather than rapid, potentially unhealthy, weight loss. Consulting a healthcare professional or registered dietitian is recommended.
Is the target body fat percentage for abs the same for everyone?
No, the 8-15% range is a general guideline. Some individuals may achieve visible abs at slightly higher percentages (e.g., 15-17%), while others may need to go lower. Genetics, muscle definition, and even hydration levels can play a role.
Does height matter for abs?
Height itself doesn't directly factor into the calculation for ideal weight for abs, but it influences your overall frame size and the amount of lean mass you might carry. The calculation focuses on body fat percentage relative to lean body mass.
What if I don't know my current body fat percentage?
Accurate measurement is key. You can use methods like body fat calipers, bioelectrical impedance analysis (BIA) scales (less accurate), DEXA scans (most accurate), or consult a fitness professional. Estimating can lead to inaccurate results.
Can I achieve abs without losing weight, just by building muscle?
If your body fat percentage is too high, building muscle alone won't reveal your abs. You'll simply be getting heavier while covering the muscles with more fat. You typically need to reduce body fat first or concurrently with muscle gain (body recomposition).
What's the difference between this calculator and a general BMI calculator?
A BMI calculator assesses weight relative to height, often indicating general health categories (underweight, healthy, overweight, obese). This calculator specifically targets the body fat percentage required for visible abs, which is a more aesthetic and performance-oriented goal, not solely health-based.
How often should I re-calculate?
Re-calculate when your body weight, body fat percentage, or fitness goals change significantly. If you're actively training and dieting, you might re-assess weekly or bi-weekly, but focus more on consistent progress and how you feel.
Is it healthy to aim for very low body fat percentages (e.g., under 10%)?
For most individuals, maintaining extremely low body fat percentages (under 10% for men, under 15% for women) long-term can be challenging and may not be sustainable or healthy. It can lead to hormonal imbalances, decreased energy levels, and other health issues. Consult with a healthcare provider before aiming for such low levels.
Discover how to structure your training for optimal muscle gain and fat loss.
var chartInstance = null; // Global variable to hold chart instance
function calculateIdealWeight() {
var heightInput = document.getElementById('height');
var bodyFatPercentageInput = document.getElementById('bodyFatPercentage');
var targetBodyFatPercentageInput = document.getElementById('targetBodyFatPercentage');
var heightError = document.getElementById('heightError');
var bodyFatPercentageError = document.getElementById('bodyFatPercentageError');
var targetBodyFatPercentageError = document.getElementById('targetBodyFatPercentageError');
var height = parseFloat(heightInput.value);
var currentBodyFat = parseFloat(bodyFatPercentageInput.value);
var targetBodyFat = parseFloat(targetBodyFatPercentageInput.value);
// Clear previous errors
heightError.style.display = 'none';
bodyFatPercentageError.style.display = 'none';
targetBodyFatPercentageError.style.display = 'none';
var isValid = true;
// Validate height
if (isNaN(height) || height 300) { // Reasonable upper limit for human height
heightError.textContent = 'Please enter a valid height in cm (e.g., 175).';
heightError.style.display = 'block';
isValid = false;
}
// Validate current body fat
if (isNaN(currentBody) || currentBody 100) {
bodyFatPercentageError.textContent = 'Please enter a valid body fat percentage (1-100%).';
bodyFatPercentageError.style.display = 'block';
isValid = false;
}
// Validate target body fat
if (isNaN(targetBodyFat) || targetBodyFat = 100) {
targetBodyFatPercentageError.textContent = 'Please enter a valid target body fat percentage (1-99%).';
targetBodyFatPercentageError.style.display = 'block';
isValid = false;
}
// Additional check: target BF should typically be lower than current BF for weight loss goals
if (isValid && targetBodyFat >= currentBody) {
targetBodyFatPercentageError.textContent = 'Target body fat should generally be lower than current.';
targetBodyFatPercentageError.style.display = 'block';
isValid = false;
}
// Additional check: typical range for abs
if (isValid && targetBodyFat > 15) {
targetBodyFatPercentageError.textContent = 'Visible abs typically require body fat below 15%.';
targetBodyFatPercentageError.style.display = 'block';
isValid = false;
}
if (!isValid) {
resetResults(); // Reset results if validation fails
return;
}
// Assume current weight is derived from height and a common starting point if not explicitly given
// For this specific calculator, we need current weight as an input for the calculation.
// Let's add a current weight input field.
var currentWeightInput = document.getElementById('currentWeightResult'); // Placeholder, will get actual input
// — We need a proper input for current weight. Let's add it —
// For now, let's simulate if we had one and it's fetched correctly.
// In a real implementation, this would be an input field.
// For demonstration, let's assume a default current weight IF the input is not provided or is invalid.
// THIS IS A CRITICAL PART: The problem statement implies we might infer current weight or it's an input.
// "Calculate your ideal weight for abs calculator" – this implies current weight is needed.
// Let's RE-ASSESS. The prompt had 'loanAmount', 'interestRate'. Here it's 'height', 'bodyFatPercentage', 'targetBodyFatPercentage'.
// The formulas NEED current weight to calculate fat mass and lean mass.
// Let's ADD 'Current Weight' as an input.
// — MODIFICATION START —
// Adding currentWeightInput dynamically for calculation logic if not present in DOM.
// In a real scenario, you'd add this input in the HTML.
// For this exercise, let's assume we fetched it correctly or use a default for demo.
// Let's check if we have a current weight input from the HTML structure modification.
var currentWeightActualInput = document.getElementById('currentWeight'); // Assuming this is added to HTML
var currentWeightValue;
if (currentWeightActualInput) {
currentWeightValue = parseFloat(currentWeightActualInput.value);
if (isNaN(currentWeightValue) || currentWeightValue <= 0) {
// Default or error if current weight input is invalid
// For this calculator, let's NOT default current weight as it's foundational.
// We will rely on user input.
document.getElementById('currentWeightError').textContent = 'Please enter your current weight.';
document.getElementById('currentWeightError').style.display = 'block';
resetResults();
return;
}
document.getElementById('currentWeightError').style.display = 'none'; // Hide error if valid
} else {
// Fallback if input is missing in HTML – THIS SHOULD NOT HAPPEN IN PRODUCTION READY CODE
// console.error("Current Weight input field missing in HTML.");
// For the purpose of making the script run, let's assign a placeholder value if it's not found
// but this indicates a problem with the HTML structure provided initially.
// Given the constraints, I'll assume it's handled in the HTML.
// Let's assume 'currentWeight' element exists.
console.error("Error: 'currentWeight' input element not found. Please ensure it's in the HTML.");
resetResults();
return;
}
// — MODIFICATION END —
var currentWeight = currentWeightValue; // Use the value from the added input field
var fatMass = currentWeight * (currentBody / 100);
var leanMass = currentWeight – fatMass;
var targetWeight = leanMass / (1 – (targetBodyFat / 100));
// Rounding for display
var roundedIdealWeight = targetWeight.toFixed(2);
var roundedLeanMass = leanMass.toFixed(2);
var roundedCurrentWeight = currentWeight.toFixed(2);
var roundedTargetWeight = targetWeight.toFixed(2); // Same as ideal weight for display here
document.getElementById('idealWeightResult').textContent = roundedIdealWeight + ' kg';
document.getElementById('leanMassResult').textContent = roundedLeanMass + ' kg';
document.getElementById('currentWeightResult').textContent = roundedCurrentWeight + ' kg'; // Display current weight for context
document.getElementById('targetWeightResult').textContent = roundedTargetWeight + ' kg';
// Update table
document.getElementById('tableCurrentWeight').textContent = roundedCurrentWeight;
document.getElementById('tableTargetWeight').textContent = roundedTargetWeight;
document.getElementById('tableLeanMass').textContent = roundedLeanMass;
document.getElementById('tableTargetLeanMass').textContent = roundedLeanMass; // LBM remains constant
document.getElementById('tableFatMass').textContent = fatMass.toFixed(2);
document.getElementById('tableTargetFatMass').textContent = (targetWeight * (targetBodyFat / 100)).toFixed(2);
document.getElementById('tableCurrentBF').textContent = currentBody + '%';
document.getElementById('tableTargetBF').textContent = targetBodyFat + '%';
updateChart(currentWeight, currentBody, targetWeight, targetBodyFat);
}
function resetResults() {
document.getElementById('idealWeightResult').textContent = '– kg';
document.getElementById('leanMassResult').textContent = '– kg';
document.getElementById('currentWeightResult').textContent = '– kg';
document.getElementById('targetWeightResult').textContent = '– kg';
document.getElementById('tableCurrentWeight').textContent = '–';
document.getElementById('tableTargetWeight').textContent = '–';
document.getElementById('tableLeanMass').textContent = '–';
document.getElementById('tableTargetLeanMass').textContent = '–';
document.getElementById('tableFatMass').textContent = '–';
document.getElementById('tableTargetFatMass').textContent = '–';
document.getElementById('tableCurrentBF').textContent = '–';
document.getElementById('tableTargetBF').textContent = '–';
// Reset chart
if (chartInstance) {
chartInstance.destroy();
chartInstance = null;
}
var ctx = document.getElementById('myChart').getContext('2d');
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
}
function resetCalculator() {
document.getElementById('height').value = '175'; // Default height in cm
document.getElementById('currentWeight').value = '75'; // Default current weight in kg
document.getElementById('bodyFatPercentage').value = '20'; // Default current BF %
document.getElementById('targetBodyFatPercentage').value = '12'; // Default target BF %
// Clear errors
document.getElementById('heightError').style.display = 'none';
document.getElementById('currentWeightError').style.display = 'none';
document.getElementById('bodyFatPercentageError').style.display = 'none';
document.getElementById('targetBodyFatPercentageError').style.display = 'none';
calculateIdealWeight(); // Recalculate with defaults
}
function copyResults() {
var idealWeight = document.getElementById('idealWeightResult').textContent;
var leanMass = document.getElementById('leanMassResult').textContent;
var currentWeight = document.getElementById('currentWeightResult').textContent;
var targetWeight = document.getElementById('targetWeightResult').textContent;
var currentBF = document.getElementById('tableCurrentBF').textContent;
var targetBF = document.getElementById('tableTargetBF').textContent;
var currentWeightTable = document.getElementById('tableCurrentWeight').textContent;
var targetWeightTable = document.getElementById('tableTargetWeight').textContent;
var leanMassTable = document.getElementById('tableLeanMass').textContent;
var fatMassTable = document.getElementById('tableFatMass').textContent;
var targetFatMassTable = document.getElementById('tableTargetFatMass').textContent;
var assumptions = "Key Assumptions:\n";
assumptions += "- Lean Body Mass remains constant.\n";
assumptions += "- Target Body Fat for Abs: " + targetBF + "\n";
var resultText = "— Ideal Weight for Abs Results —\n\n";
resultText += "Primary Goal:\n";
resultText += "Ideal Weight for Abs: " + idealWeight + "\n";
resultText += "Target Weight: " + targetWeight + "\n\n";
resultText += "Current Status:\n";
resultText += "Current Weight: " + currentWeight + "\n";
resultText += "Current Body Fat: " + currentBF + "\n\n";
resultText += "Body Composition:\n";
resultText += "Lean Body Mass: " + leanMass + "\n";
resultText += "Current Fat Mass: " + fatMassTable + "\n";
resultText += "Target Fat Mass: " + targetFatMassTable + "\n\n";
resultText += assumptions;
// Use a temporary textarea to copy to clipboard
var textArea = document.createElement("textarea");
textArea.value = resultText;
textArea.style.position = "fixed";
textArea.style.opacity = 0;
document.body.appendChild(textArea);
textArea.focus();
textArea.select();
try {
var successful = document.execCommand('copy');
var msg = successful ? 'Results copied to clipboard!' : 'Failed to copy results.';
console.log(msg); // Log to console for debugging
// Optionally show a temporary notification to the user
alert(msg);
} catch (err) {
console.error('Unable to copy results', err);
alert('Failed to copy results.');
}
document.body.removeChild(textArea);
}
function updateChart(currentWeight, currentBodyFat, targetWeight, targetBodyFat) {
var ctx = document.getElementById('myChart').getContext('2d');
// Destroy previous chart instance if it exists
if (chartInstance) {
chartInstance.destroy();
}
// Calculate intermediate points for the line (e.g., 5 points between current and target)
var chartDataPoints = 5;
var weightStep = (targetWeight – currentWeight) / (chartDataPoints – 1);
var bfStep = (targetBodyFat – currentBodyFat) / (chartDataPoints – 1);
var weights = [];
var bodyFats = [];
for (var i = 0; i < chartDataPoints; i++) {
var currentWeightStep = currentWeight + (i * weightStep);
var currentBfStep = currentBodyFat + (i * bfStep);
weights.push(currentWeightStep);
bodyFats.push(currentBfStep);
}
// Ensure the last point is exactly the target if rounding causes minor diffs
weights[weights.length – 1] = targetWeight;
bodyFats[bodyFats.length – 1] = targetBodyFat;
chartInstance = new Chart(ctx, {
type: 'line',
data: {
labels: weights.map(function(w) { return w.toFixed(1) + ' kg'; }), // Labels for X-axis as weight
datasets: [{
label: 'Total Weight (kg)',
data: weights,
borderColor: 'rgb(75, 192, 192)',
backgroundColor: 'rgba(75, 192, 192, 0.2)',
tension: 0.1,
fill: false,
yAxisID: 'y-axis-weight' // Assign to weight Y-axis
}, {
label: 'Body Fat (%)',
data: bodyFats,
borderColor: 'rgb(255, 99, 132)',
backgroundColor: 'rgba(255, 99, 132, 0.2)',
tension: 0.1,
fill: false,
yAxisID: 'y-axis-bf' // Assign to body fat Y-axis
}]
},
options: {
responsive: true,
maintainAspectRatio: false,
scales: {
x: {
title: {
display: true,
text: 'Estimated Weight (kg)'
}
},
'y-axis-weight': { // Define the first Y-axis for weight
type: 'linear',
position: 'left',
title: {
display: true,
text: 'Weight (kg)'
},
min: Math.min(currentWeight, targetWeight) * 0.95, // Ensure min is slightly below the lowest weight
max: Math.max(currentWeight, targetWeight) * 1.05 // Ensure max is slightly above the highest weight
},
'y-axis-bf': { // Define the second Y-axis for body fat percentage
type: 'linear',
position: 'right',
title: {
display: true,
text: 'Body Fat (%)'
},
min: 0,
max: 20, // Max BF for this chart context usually around 20% for visible abs goal
grid: {
drawOnChartArea: false, // Only draw grid for the main Y-axis
}
}
},
plugins: {
tooltip: {
mode: 'index',
intersect: false,
},
legend: {
position: 'top',
}
},
hover: {
mode: 'index',
intersect: false
}
}
});
}
// — Add initial calculation on load if defaults are set —
// Add the missing current weight input field to the HTML dynamically for script logic
// This is a workaround for the prompt not explicitly including it.
// In production, this would be hardcoded in the HTML.
var currentWeightInputHTML = '
Enter your current weight in kilograms (kg).
';
var calculatorContainer = document.querySelector('.loan-calc-container');
// Insert the new input group after the first input group (Height)
if (calculatorContainer) {
var firstInputGroup = calculatorContainer.querySelector('.input-group');
if (firstInputGroup) {
firstInputGroup.insertAdjacentHTML('afterend', currentWeightInputHTML);
} else {
// If no input groups yet, add it to the container
calculatorContainer.innerHTML = currentWeightInputHTML + calculatorContainer.innerHTML;
}
}
// Load the Chart.js library dynamically
var script = document.createElement('script');
script.src = 'https://cdn.jsdelivr.net/npm/chart.js@3.9.1/dist/chart.min.js'; // Using a specific version for consistency
script.onload = function() {
console.log('Chart.js loaded successfully.');
// Initialize with default values after Chart.js is loaded
resetCalculator(); // Call resetCalculator to set defaults and perform initial calculation
};
script.onerror = function() {
console.error('Failed to load Chart.js library.');
};
document.head.appendChild(script);
// Add event listener for FAQ toggling
var faqItems = document.querySelectorAll('.faq-item h3');
faqItems.forEach(function(item) {
item.addEventListener('click', function() {
var parent = this.parentElement;
parent.classList.toggle('active');
var answer = parent.querySelector('.answer');
if (parent.classList.contains('active')) {
answer.style.display = 'block';
} else {
answer.style.display = 'none';
}
});
});