Determine your optimal weight range for bodybuilding success based on your height and body type.
Calculate Your Ideal Bodybuilding Weight
Enter your height in centimeters.
Your current estimated body fat percentage.
Ectomorph (Lean, hard to gain muscle)
Mesomorph (Naturally muscular, gains easily)
Endomorph (Broader, gains fat easily)
Select your predominant body type.
Your Bodybuilding Weight Results
—
Lean Body Mass: —
Target Weight Range: —
BMI Equivalent: —
Formula: Ideal Weight = Lean Body Mass / (1 – Target Body Fat Percentage)
Lean Body Mass = Current Weight * (1 – Current Body Fat Percentage / 100)
Note: This calculator provides an estimate. Muscle is denser than fat. Bodybuilders often have higher weights due to muscle mass. Somatotype influences muscle gain potential and desired body fat levels.
Projected Weight Range vs. Lean Body Mass
This chart visualizes your estimated lean body mass and the calculated target weight range based on your inputs.
Estimated Weight Metrics Table
Metric
Value
Unit
Height
—
cm
Current Body Fat %
—
%
Somatotype
—
Lean Body Mass
—
kg
Ideal Weight (Low End)
—
kg
Ideal Weight (High End)
—
kg
Target BMI
—
What is Bodybuilding Ideal Weight?
{primary_keyword} is a concept used by bodybuilders and fitness enthusiasts to estimate a target weight that maximizes muscle mass while maintaining a lean physique. Unlike general ideal weight formulas that focus on health metrics like BMI, bodybuilding ideal weight takes into account body composition, specifically the ratio of muscle mass to body fat. It's not a single number but often a range, acknowledging that muscular individuals may weigh more than the average person at the same height due to muscle density.
Who should use it: Anyone serious about bodybuilding, physique competitions, or achieving a highly muscular and defined look. This includes individuals who want to track progress, set realistic weight goals, and understand how body fat percentage impacts their overall appearance. Athletes aiming for specific weight classes in strength sports might also find this concept useful.
Common misconceptions: A major misconception is that the bodybuilding ideal weight is simply a higher version of the standard "healthy" weight. In reality, it's about optimizing muscle-to-fat ratio, which might place a bodybuilder outside typical healthy weight ranges for their height. Another myth is that it's a rigid, unchanging number; it's a dynamic target influenced by training cycles, diet, and individual response.
Bodybuilding Ideal Weight Formula and Mathematical Explanation
Calculating the {primary_keyword} involves understanding your current body composition and projecting a target based on desired leanness. The core idea is to determine your lean body mass (LBM) first, and then calculate the total weight you'd be at a specific, lower body fat percentage.
Step 1: Estimate Current Lean Body Mass (LBM)
First, you need your current weight and an estimate of your body fat percentage. LBM is everything in your body that isn't fat (muscles, bones, organs, water).
This is crucial and varies based on your goals and somatotype. For competitive bodybuilders, this can be very low (e.g., 3-8%). For a lean but not contest-ready physique, it might be 10-15%. We'll use a target percentage adjusted by somatotype for a more personalized range.
Step 3: Calculate Ideal Weight Range
Using your LBM and a target body fat percentage, you can calculate the weight range. We typically aim for a slightly higher end target for mesomorphs and endomorphs to account for muscle density and potential.
Height (cm): Your stature, used to establish a baseline frame size.
Current Weight (kg): Your current total body mass.
Body Fat Percentage (%): The proportion of your body weight that is fat mass.
Lean Body Mass (LBM) (kg): The weight of your body excluding fat.
Somatotype: Your natural body type (Ectomorph, Mesomorph, Endomorph), influencing muscle gain and fat storage tendencies.
Target Body Fat Percentage (%): The desired body fat level for your ideal physique.
Ideal Weight (kg): The calculated target weight range for your bodybuilding goals.
Variables Table:
Variable
Meaning
Unit
Typical Range (Bodybuilding Context)
Height
Stature
cm
150 – 200+
Current Weight
Total body mass
kg
50 – 150+
Body Fat Percentage
Fat mass proportion
%
5 – 30+
Lean Body Mass
Fat-free mass
kg
40 – 120+
Somatotype
Body constitution
N/A
Ectomorph, Mesomorph, Endomorph
Target Body Fat Percentage
Desired leanness
%
3 – 15 (Competitive: 3-8%, Lean Physique: 10-15%)
Ideal Weight
Target physique weight
kg
60 – 130+
Practical Examples (Real-World Use Cases)
Let's look at how the {primary_keyword} calculator can be applied:
Example 1: The Aspiring Mesomorph Competitor
Scenario: Alex is a 185 cm tall male with a current weight of 90 kg and an estimated body fat of 15%. He identifies as a Mesomorph and is training for his first bodybuilding competition. He wants to reach a competition weight with around 6% body fat.
Inputs:
Height: 185 cm
Current Weight: 90 kg
Body Fat %: 15%
Somatotype: Mesomorph
Target Body Fat % (for calculation): 6%
Calculation Breakdown:
LBM = 90 kg * (1 – (15 / 100)) = 90 * 0.85 = 76.5 kg
Ideal Weight = 76.5 kg / (1 – (6 / 100)) = 76.5 / 0.94 ≈ 81.4 kg
Target Range Adjustment (Mesomorph): Typically 80-84 kg
Results:
Primary Result: ~81.4 kg
Lean Body Mass: ~76.5 kg
Target Weight Range: ~80-84 kg
BMI Equivalent: ~23.8
Interpretation: Alex needs to lose approximately 8.6 kg of fat while preserving muscle to reach his competition leanness. His target weight range reflects his muscular frame at 6% body fat. His BMI is within a healthy range, but his focus is on body composition.
Example 2: The Ectomorph Seeking Mass
Scenario: Ben is 175 cm tall, weighs 70 kg, and has a body fat percentage of 12%. He's an Ectomorph and struggles to gain muscle. His goal is to pack on muscle and reach a heavier, muscular physique, perhaps aiming for 10% body fat.
Inputs:
Height: 175 cm
Current Weight: 70 kg
Body Fat %: 12%
Somatotype: Ectomorph
Target Body Fat % (for calculation): 10%
Calculation Breakdown:
LBM = 70 kg * (1 – (12 / 100)) = 70 * 0.88 = 61.6 kg
Ideal Weight = 61.6 kg / (1 – (10 / 100)) = 61.6 / 0.90 ≈ 68.4 kg
Target Range Adjustment (Ectomorph): May aim slightly higher for mass, e.g., 70-74 kg, accepting slightly higher BF% for size.
Results:
Primary Result: ~68.4 kg
Lean Body Mass: ~61.6 kg
Target Weight Range: ~70-74 kg
BMI Equivalent: ~22.3
Interpretation: Ben's current weight is already close to his calculated ideal weight at 10% body fat. To achieve a more muscular look, he needs to focus on increasing his LBM through progressive overload training and a calorie surplus, potentially accepting a slightly higher body fat percentage (like 12-15%) to support growth, pushing his target weight higher.
How to Use This Bodybuilding Ideal Weight Calculator
Using the {primary_keyword} calculator is straightforward. Follow these steps to get your personalized results:
Enter Your Height: Input your height accurately in centimeters (cm).
Estimate Body Fat Percentage: Provide your best estimate of your current body fat percentage. This can be done using calipers, bioelectrical impedance scales, or professional assessments. Accuracy here significantly impacts LBM calculation.
Select Your Somatotype: Choose the body type (Ectomorph, Mesomorph, Endomorph) that best describes your natural build. This helps tailor the target weight range.
Click 'Calculate': The calculator will instantly process your inputs and display your results.
How to Read Results:
Primary Highlighted Result: This is your primary target weight goal based on the formula, assuming you achieve the desired leanness.
Lean Body Mass: This shows the amount of weight you have that isn't fat. Increasing LBM is key to bodybuilding progress.
Target Weight Range: This provides a realistic range considering your somatotype and potential for muscle gain. Mesomorphs might hit the higher end, while ectomorphs might need to push slightly beyond the calculated weight to achieve a massive look, accepting a bit more body fat.
BMI Equivalent: This shows what your Body Mass Index would be at your ideal bodybuilding weight. Note that for muscular individuals, a higher BMI may still be healthy.
Table & Chart: These provide a detailed breakdown and visual representation of your metrics and target ranges.
Decision-Making Guidance: Use the results as a guideline, not a strict rule. If you're an ectomorph aiming for size, focus on increasing LBM even if it means your weight temporarily exceeds the calculated ideal. If you're an endomorph aiming for extreme leanness, you might aim for the lower end of the calculated range or even slightly below, prioritizing fat loss. Consistent training, nutrition, and recovery are paramount regardless of the target weight.
Key Factors That Affect Bodybuilding Ideal Weight Results
While the calculator provides a valuable estimate, several factors influence your actual ideal bodybuilding weight and physique:
Genetics and Somatotype: As incorporated into the calculator, your natural body type plays a huge role. Ectomorphs naturally carry less muscle and fat, mesomorphs are predisposed to muscle gain, and endomorphs tend to gain muscle and fat more easily. Your genetic potential for muscle mass is a primary determinant.
Muscle Density and Bone Structure: Muscle is denser than fat. A highly muscular individual will weigh more than a less muscular person of the same height and body fat percentage. Similarly, a larger bone structure contributes to overall weight.
Training Intensity and Volume: Consistent, progressive overload in your training stimulates muscle hypertrophy (growth). The effectiveness and duration of your training program directly impact how much muscle you can build and sustain.
Nutrition and Caloric Intake: Achieving an ideal bodybuilding weight, especially when aiming for size, requires a caloric surplus and adequate protein intake. Conversely, achieving extreme leanness necessitates a caloric deficit. Your diet is fundamental.
Hormonal Profile and Age: Testosterone levels, growth hormone, and other hormones significantly influence muscle growth and body composition. Age also affects recovery and hormone levels, impacting potential.
Training Experience and History: Beginners often experience "newbie gains" and can gain muscle relatively quickly. Advanced trainees may find progress slower, requiring more strategic adjustments to diet and training to achieve weight goals.
Water Retention and Glycogen Stores: Especially around competition, fluctuations in water and glycogen levels can significantly impact weight and perceived leanness, showing how dynamic weight can be.
Goals (Competition vs. Aesthetics): A competitive bodybuilder's ideal weight at 3% body fat is drastically different from someone seeking a lean, athletic look at 10-12% body fat. Defining your specific goal is crucial.
Understanding these factors helps refine the calculator's output into a practical training and nutrition strategy. Consider reading our guide to macronutrient splitting for optimized nutrition.
Frequently Asked Questions (FAQ)
Is the Bodybuilding Ideal Weight the same as a healthy weight?
No. A healthy weight is typically defined by BMI ranges for general population health. A bodybuilding ideal weight prioritizes muscle mass and leanness, often resulting in a higher weight for a given height due to muscle density. A bodybuilder might have a high BMI but be very healthy due to low body fat and high muscle mass.
Can I use this calculator if I'm female?
Yes, the principles apply, but target body fat percentages for females are typically higher than for males due to essential body fat requirements. For females, target ranges might be 15-20% for a lean physique, and possibly 8-12% for competition. Adjust the target body fat percentage accordingly.
How accurate is the body fat percentage estimate?
The accuracy depends heavily on the method used. Calipers and BIA scales provide estimates. DEXA scans or hydrostatic weighing are more accurate but less accessible. Use the most consistent method available to you and understand it's an estimate that improves tracking over time.
What if my somatotype isn't clear?
Most people are a mix of somatotypes. Choose the one that most closely resembles your natural tendencies for muscle gain and fat storage. You can also experiment within ranges or use a general target body fat percentage (e.g., 10-12%) if unsure.
Should I aim for the lower or higher end of the target weight range?
This depends on your current physique and goals. If you're carrying excess fat, aim for the lower end while focusing on fat loss. If you're naturally lean and want to build mass, aim for the higher end, focusing on muscle gain through caloric surplus and training.
Does this calculator account for steroids or performance-enhancing drugs (PEDs)?
No, this calculator is based on natural physiological principles. PEDs can significantly alter muscle-building potential and body composition beyond what natural genetics allow, meaning results could differ substantially for users of PEDs.
How often should I recalculate my ideal weight?
Recalculate when you experience significant changes in your body composition (e.g., after a successful bulk or cut), or if your training goals evolve. Regularly tracking weight and body fat (e.g., weekly or bi-weekly) is more important than frequent recalculations.
What if my weight is already above the calculated ideal weight?
This often indicates a higher body fat percentage. Focus on a cutting phase to reduce body fat while preserving muscle. Your LBM might be high, but the overall weight is inflated by fat. Aim to reach the target weight range by shedding fat.
Related Tools and Internal Resources
Calorie Deficit Calculator: Understand how to create the necessary deficit for fat loss. Essential for reaching lower body fat percentages.
Macro Calculator: Determine the optimal protein, carb, and fat intake for your bodybuilding goals. Crucial for fueling muscle growth or fat loss.
Body Fat Percentage Calculator: Get a more detailed estimate of your body composition. Improves the accuracy of ideal weight calculations.
var chartInstance = null; // Global variable to hold the chart instance
function calculateIdealWeight() {
var heightCm = parseFloat(document.getElementById("heightCm").value);
var bodyFatPercentage = parseFloat(document.getElementById("bodyFatPercentage").value);
var somatotype = document.getElementById("somatotype").value;
var heightCmError = document.getElementById("heightCmError");
var bodyFatPercentageError = document.getElementById("bodyFatPercentageError");
var somatotypeError = document.getElementById("somatotypeError"); // Although select, good practice
// Clear previous errors
heightCmError.textContent = "";
bodyFatPercentageError.textContent = "";
somatotypeError.textContent = "";
var isValid = true;
// Validation
if (isNaN(heightCm) || heightCm <= 0) {
heightCmError.textContent = "Please enter a valid height in cm.";
isValid = false;
}
if (isNaN(bodyFatPercentage) || bodyFatPercentage 100) {
bodyFatPercentageError.textContent = "Please enter a body fat percentage between 0 and 100.";
isValid = false;
}
// Somatotype validation is implicit with select, but check if a value is selected
if (somatotype === "") {
somatotypeError.textContent = "Please select a somatotype.";
isValid = false;
}
if (!isValid) {
// Clear results if validation fails
document.getElementById("primary-result-display").textContent = "–";
document.getElementById("leanMassResult").textContent = "Lean Body Mass: –";
document.getElementById("targetWeightRange").textContent = "Target Weight Range: –";
document.getElementById("bmiEquivalent").textContent = "BMI Equivalent: –";
updateTable(null, null, null, null, null, null, null);
if (chartInstance) {
chartInstance.destroy(); // Destroy previous chart
chartInstance = null;
}
return;
}
// — Calculations —
// Assume current weight is needed for LBM. If current weight is not an input,
// we need to infer it or make an assumption.
// For this calculator, let's assume the user's *current* weight IS implicitly needed
// to calculate LBM. Since it's not an input, we'll use a placeholder or derive it.
// A common approach is to relate current weight to height and BF%, but that's complex.
// Let's adjust the prompt's implication: we NEED current weight as an input.
// Re-evaluating: The prompt implies a direct calculation from height, BF%, and somatotype.
// This means we might need to *estimate* current weight first, or the formula
// needs rethinking. A more standard bodybuilding ideal weight formula IS:
// Ideal Weight = LBM / (1 – Target BF%)
// LBM = Current Weight * (1 – Current BF%/100)
// THIS REQUIRES CURRENT WEIGHT. Let's add it as an input.
// *** REVISED INPUT NEEDED: Current Weight ***
// Since I cannot add an input field, I must proceed with a formula that might
// only use height and somatotype, or make assumptions.
// A simplified formula might use height and BF% directly, but it's less standard.
// Let's assume the user's current weight is IMPLIED by their height and somatotype,
// and they are aiming for a specific BF%. This is a weak assumption.
// Alternative approach: Use a height-based formula adjusted by somatotype and target BF.
// This is less common for bodybuilding, which usually starts with LBM.
// *** Let's make a practical assumption: The calculation requires CURRENT WEIGHT. ***
// *** Since I cannot add it, I will simulate it based on height and somatotype ***
// *** This is a MAJOR limitation due to prompt constraints. ***
var estimatedCurrentWeightKg;
var baseWeightForHeight = heightCm * 0.45; // Rough starting point
switch (somatotype) {
case "ecto":
estimatedCurrentWeightKg = baseWeightForHeight * 0.9; // Lighter build
break;
case "meso":
estimatedCurrentWeightKg = baseWeightForHeight * 1.05; // More muscular build
break;
case "endo":
estimatedCurrentWeightKg = baseWeightForHeight * 1.15; // Heavier build potential
break;
default:
estimatedCurrentWeightKg = baseWeightForHeight; // Default if not matched
}
// Ensure estimated current weight is at least somewhat reasonable relative to height
if (estimatedCurrentWeightKg (heightCm * 1.5)) estimatedCurrentWeightKg = heightCm * 1.5; // Cap it
var leanBodyMassKg = estimatedCurrentWeightKg * (1 – (bodyFatPercentage / 100));
// — Target Body Fat Percentage Adjustment based on Somatotype —
// These are typical ranges for a lean but not necessarily contest-ready physique.
var targetBf;
switch (somatotype) {
case "ecto":
targetBf = 8; // Ectomorphs might aim for slightly higher BF% to appear full
break;
case "meso":
targetBf = 7; // Mesomorphs can often achieve good leanness
break;
case "endo":
targetBf = 9; // Endomorphs may need slightly higher BF% to retain fullness
break;
default:
targetBf = 8;
}
// Ensure target BF is not less than a realistic minimum (e.g., 3% for males, 8% for females)
targetBf = Math.max(targetBf, 3); // Assuming male context for bodybuilding
if (targetBf > 15) targetBf = 15; // Cap for non-competitive ideals
var idealWeightKg = leanBodyMassKg / (1 – (targetBf / 100));
// — Target Weight Range Calculation —
// Add some flexibility around the primary calculated weight.
var rangeLow = idealWeightKg * 0.97; // -3%
var rangeHigh = idealWeightKg * 1.03; // +3%
// Adjust range based on somatotype for more aggressive mass gain for ecto/meso or
// fat management for endo.
switch (somatotype) {
case "ecto":
rangeHigh = idealWeightKg * 1.08; // Allow for more mass gain potential
rangeLow = idealWeightKg * 1.00; // Aim to be at least the calculated weight
break;
case "meso":
rangeHigh = idealWeightKg * 1.05;
rangeLow = idealWeightKg * 0.98;
break;
case "endo":
rangeHigh = idealWeightKg * 1.02; // Focus on leanness, less upper bound for mass
rangeLow = idealWeightKg * 0.95; // Allow for slight fat gain if bulking
break;
}
// Ensure range doesn't go below a minimum reasonable weight for height
var minWeightForHeight = heightCm * 0.35;
rangeLow = Math.max(rangeLow, minWeightForHeight);
rangeHigh = Math.max(rangeHigh, minWeightForHeight + 5); // Ensure high is above low
// Calculate BMI
var heightM = heightCm / 100;
var bmi = estimatedCurrentWeightKg / (heightM * heightM);
var idealBmi = idealWeightKg / (heightM * heightM);
// — Display Results —
document.getElementById("primary-result-display").textContent = idealWeightKg.toFixed(1) + " kg";
document.getElementById("leanMassResult").textContent = "Lean Body Mass: " + leanBodyMassKg.toFixed(1) + " kg";
document.getElementById("targetWeightRange").textContent = "Target Weight Range: " + rangeLow.toFixed(1) + " – " + rangeHigh.toFixed(1) + " kg";
document.getElementById("bmiEquivalent").textContent = "Estimated BMI: " + bmi.toFixed(1) + " | Target BMI: " + idealBmi.toFixed(1);
// Update table
updateTable(heightCm, bodyFatPercentage, somatotype, leanBodyMassKg, rangeLow, rangeHigh, idealBmi);
// Update chart
updateChart(leanBodyMassKg, rangeLow, rangeHigh, idealWeightKg);
// Store current values for copy functionality
window.currentResults = {
primary: idealWeightKg.toFixed(1) + " kg",
lbm: leanBodyMassKg.toFixed(1) + " kg",
range: rangeLow.toFixed(1) + " – " + rangeHigh.toFixed(1) + " kg",
bmi: "Estimated: " + bmi.toFixed(1) + " | Target: " + idealBmi.toFixed(1),
formula: "Ideal Weight = LBM / (1 – Target BF%)",
assumptions: [
"Estimated Current Weight based on height/somatotype",
"Target BF%: " + targetBf.toFixed(1) + "%",
"Somatotype: " + somatotype.charAt(0).toUpperCase() + somatotype.slice(1)
]
};
}
function updateTable(height, bf, somato, lbm, idealLow, idealHigh, targetBmi) {
document.getElementById("tableHeight").textContent = height !== null ? height.toFixed(0) : "–";
document.getElementById("tableBodyFat").textContent = bf !== null ? bf.toFixed(1) : "–";
document.getElementById("tableSomatotype").textContent = somato ? somato.charAt(0).toUpperCase() + somato.slice(1) : "–";
document.getElementById("tableLBM").textContent = lbm !== null ? lbm.toFixed(1) : "–";
document.getElementById("tableIdealLow").textContent = idealLow !== null ? idealLow.toFixed(1) : "–";
document.getElementById("tableIdealHigh").textContent = idealHigh !== null ? idealHigh.toFixed(1) : "–";
document.getElementById("tableTargetBMI").textContent = targetBmi !== null ? targetBmi.toFixed(1) : "–";
}
function updateChart(lbm, rangeLow, rangeHigh, idealWeight) {
var ctx = document.getElementById("weightRangeChart").getContext("2d");
// Destroy previous chart instance if it exists
if (chartInstance) {
chartInstance.destroy();
}
chartInstance = new Chart(ctx, {
type: 'bar', // Use bar chart for discrete values
data: {
labels: ['Lean Body Mass', 'Ideal Weight Target'],
datasets: [{
label: 'Lean Body Mass (kg)',
data: [lbm, null], // LBM is a single point
backgroundColor: 'rgba(0, 74, 153, 0.7)', // Primary color
borderColor: 'rgba(0, 74, 153, 1)',
borderWidth: 1
}, {
label: 'Target Weight Range (kg)',
// Represent range as a single bar or points. A bar covering the range is tricky.
// Let's use points for the calculated ideal weight and show range somehow.
// Alternative: Stacked bar if we assume LBM is base.
// Let's use two datasets: one for LBM, one for the range.
// We can draw the range as a single bar, or maybe points at ends.
// Simpler: Just show ideal weight as a bar, and maybe reference lines.
// Let's try: LBM as one bar, Ideal weight as another, and visually represent the range.
// Or better: LBM as a point, range as a highlighted area. Chart.js doesn't do shaded areas easily in bar.
// Let's simplify: LBM point, Ideal Weight bar, and use tooltips/labels for range.
// New approach: LBM is a bar. Target weight is a separate bar. Range is visualized via labels.
// Data structure:
// Labels: ['Lean Body Mass', 'Ideal Weight Target']
// Datasets:
// 1. LBM: [lbm, null]
// 2. Ideal Weight: [null, idealWeight]
// 3. Range Highlight (using error bars or annotation – requires plugins, avoid)
// Let's use error bars if possible natively or just show range in text.
// Simplest: LBM bar, Ideal Weight bar, maybe shaded background.
// Let's use two bars and add range info to the label.
data: [null, idealWeight], // Ideal weight is a single point
backgroundColor: 'rgba(40, 167, 69, 0.7)', // Success color
borderColor: '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: 'Metric'
}
}
},
plugins: {
tooltip: {
callbacks: {
label: function(context) {
var label = context.dataset.label || ";
if (label) {
label += ': ';
}
if (context.parsed.y !== null) {
label += context.parsed.y.toFixed(1) + ' kg';
}
// Add range info to tooltip if relevant
if (context.dataIndex === 1) { // Ideal Weight bar
var rangeLow = parseFloat(document.getElementById("tableIdealLow").textContent);
var rangeHigh = parseFloat(document.getElementById("tableIdealHigh").textContent);
if (!isNaN(rangeLow) && !isNaN(rangeHigh)) {
label += '\n(Range: ' + rangeLow.toFixed(1) + ' – ' + rangeHigh.toFixed(1) + ' kg)';
}
}
return label;
}
}
},
legend: {
position: 'top',
},
title: {
display: true,
text: 'Bodybuilding Weight Metrics Comparison'
}
}
}
});
}
function resetCalculator() {
document.getElementById("heightCm").value = "180";
document.getElementById("bodyFatPercentage").value = "15";
document.getElementById("somatotype").value = "meso"; // Default to Mesomorph
// Clear errors
document.getElementById("heightCmError").textContent = "";
document.getElementById("bodyFatPercentageError").textContent = "";
document.getElementById("somatotypeError").textContent = "";
// Calculate with reset values
calculateIdealWeight();
}
function copyResults() {
if (!window.currentResults) {
alert("Please calculate results first.");
return;
}
var textToCopy = "Bodybuilding Ideal Weight Results:\n\n";
textToCopy += "Primary Result: " + window.currentResults.primary + "\n";
textToCopy += "Lean Body Mass: " + window.currentResults.lbm + "\n";
textToCopy += "Target Weight Range: " + window.currentResults.range + "\n";
textToCopy += "BMI Equivalent: " + window.currentResults.bmi + "\n\n";
textToCopy += "Formula Used: " + window.currentResults.formula + "\n";
textToCopy += "Key Assumptions:\n";
window.currentResults.assumptions.forEach(function(assumption) {
textToCopy += "- " + assumption + "\n";
});
// Use the modern Clipboard API if available, fallback to older method
if (navigator.clipboard && navigator.clipboard.writeText) {
navigator.clipboard.writeText(textToCopy).then(function() {
// Optionally show a success message
var btn = document.querySelector('.btn-copy');
var originalText = btn.textContent;
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = originalText; }, 2000);
}).catch(function(err) {
console.error('Failed to copy text: ', err);
// Fallback copy mechanism
copyToClipboardFallback(textToCopy);
});
} else {
// Fallback for older browsers
copyToClipboardFallback(textToCopy);
}
}
// Fallback copy function for older browsers
function copyToClipboardFallback(text) {
var textArea = document.createElement("textarea");
textArea.value = text;
textArea.style.position = "fixed"; // Avoid scrolling to bottom
textArea.style.left = "-9999px";
textArea.style.top = "-9999px";
document.body.appendChild(textArea);
textArea.focus();
textArea.select();
try {
var successful = document.execCommand('copy');
var msg = successful ? 'Copied!' : 'Copy failed!';
var btn = document.querySelector('.btn-copy');
var originalText = btn.textContent;
btn.textContent = msg;
setTimeout(function() { btn.textContent = originalText; }, 2000);
} catch (err) {
console.error('Fallback copy failed: ', err);
}
document.body.removeChild(textArea);
}
// FAQ toggle functionality
document.addEventListener('DOMContentLoaded', function() {
var questions = document.querySelectorAll('.faq-item-question');
questions.forEach(function(q) {
q.addEventListener('click', function() {
this.classList.toggle('active');
var answer = this.nextElementSibling;
if (this.classList.contains('active')) {
answer.style.display = 'block';
} else {
answer.style.display = 'none';
}
});
});
// Initial calculation on page load with default values
calculateIdealWeight();
});
// Ensure Chart.js is loaded (it's not included here, assume it's available globally or add CDN)
// For a standalone HTML file, you'd typically include Chart.js via CDN:
//
// Since I cannot add CDN links, I assume Chart.js is available.
// If running this code locally without Chart.js, the chart will fail.