Calorie Calculator for Endomorph Weight Loss

Endomorph Calorie Calculator for Weight Loss | Calculate Your Needs :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –secondary-text-color: #6c757d; –border-color: #dee2e6; –card-bg: #ffffff; –error-color: #dc3545; } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: #333; line-height: 1.6; margin: 0; padding: 0; } .container { max-width: 960px; margin: 20px auto; padding: 20px; background-color: var(–card-bg); border-radius: 8px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05); display: flex; flex-direction: column; align-items: center; } header { background-color: var(–primary-color); color: #fff; padding: 15px 0; text-align: center; width: 100%; margin-bottom: 20px; border-radius: 8px 8px 0 0; } header h1 { margin: 0; font-size: 2em; font-weight: 700; } main { width: 100%; display: flex; flex-direction: column; align-items: center; } .calculator-section { width: 100%; margin-bottom: 30px; 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Endomorph Calorie Calculator for Weight Loss

Calculate Your Personalized Calorie Needs

Endomorph Weight Loss Calorie Calculator

Enter your current body weight in kilograms.
Enter your height in centimeters.
Enter your age in years.
Male Female
Select your gender.
Sedentary (little to no exercise) Lightly Active (light exercise/sports 1-3 days/week) Moderately Active (moderate exercise/sports 3-5 days/week) Very Active (hard exercise/sports 6-7 days a week) Extra Active (very hard exercise/sports & physical job)
Choose the option that best describes your daily physical activity.
Enter your estimated body fat percentage.
Enter your desired weekly weight loss in kilograms (e.g., 0.5, 1).

Your Personalized Results

Basal Metabolic Rate (BMR) — kcal
Total Daily Energy Expenditure (TDEE) — kcal
Calorie Deficit Needed — kcal
— kcal
Formula Used: We use the Mifflin-St Jeor equation to estimate BMR, then multiply by an activity factor to get TDEE. A deficit is then calculated based on your weight loss goal, assuming 7700 kcal per kg of fat. For endomorphs, we may suggest a slightly larger deficit or focus on nutrient timing.

Calorie Breakdown Over Time

Target Daily Calories Estimated TDEE
Endomorph Metabolism & Macronutrient Guide
Metric Value Recommended Range (Endomorph Weight Loss)
BMR (kcal) Variable
TDEE (kcal) Variable
Target Daily Calories (kcal) TDEE – Deficit
Protein (g) 1.6 – 2.2 g/kg body weight
Fat (g) 20-30% of Target Calories
Carbohydrates (g) Remaining calories (focus on complex carbs)

What is an Endomorph Calorie Calculator for Weight Loss?

An **Endomorph Calorie Calculator for Weight Loss** is a specialized tool designed to estimate the daily calorie intake required for individuals with an endomorphic body type to achieve sustainable weight loss. Unlike generic calorie calculators, this tool may consider factors often associated with endomorphs, such as a tendency to gain fat easily, a slower metabolism, and a potential sensitivity to carbohydrates. By calculating a personalized calorie target, it helps individuals create a deficit necessary for shedding excess weight while aiming for optimal metabolic function and body composition. This calculator is particularly useful for individuals who identify as endomorphs and are struggling with weight management despite conventional dieting approaches.

Who should use it: Anyone identifying as an endomorph, experiencing difficulties with weight loss, or seeking a more personalized approach to calorie management. This includes individuals who notice they gain weight easily, have a naturally "softer" physique, and may find it challenging to lose fat, especially around the midsection. It's also beneficial for those looking to understand their Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) to fuel their weight loss journey effectively.

Common Misconceptions: A common misconception is that endomorphs *must* severely restrict carbohydrates. While carbohydrate sensitivity can be a factor, a balanced approach focusing on nutrient quality and overall calorie deficit is crucial. Another myth is that all endomorphs have the same metabolic rate; individual variations exist. This calculator aims to account for these by using specific inputs like body fat percentage and activity level.

Endomorph Calorie Calculator for Weight Loss Formula and Mathematical Explanation

The core of this **Endomorph Calorie Calculator for Weight Loss** relies on estimating your energy expenditure and then creating a calorie deficit. We typically use the Mifflin-St Jeor equation, which is considered more accurate than the older Harris-Benedict equation for most individuals. For endomorphs, slight adjustments or emphasis on specific nutrient ratios might be considered, but the foundational calculation remains the same.

Step 1: Calculate Basal Metabolic Rate (BMR)

BMR is the number of calories your body burns at rest to maintain basic functions like breathing, circulation, and cell production. The Mifflin-St Jeor equation is:

For Men: BMR = (10 × weight in kg) + (6.25 × height in cm) – (5 × age in years) + 5

For Women: BMR = (10 × weight in kg) + (6.25 × height in cm) – (5 × age in years) – 161

Step 2: Calculate Total Daily Energy Expenditure (TDEE)

TDEE accounts for your BMR plus the calories burned through physical activity. This is done by multiplying your BMR by an activity factor:

  • Sedentary: BMR × 1.2
  • Lightly Active: BMR × 1.375
  • Moderately Active: BMR × 1.55
  • Very Active: BMR × 1.725
  • Extra Active: BMR × 1.9

Step 3: Calculate Calorie Deficit for Weight Loss

To lose weight, you need to consume fewer calories than your TDEE. A common guideline is that a deficit of 3500-7700 kcal is needed to lose approximately 0.5-1 kg of fat per week. We use 7700 kcal per kg for calculation.

Weekly Calorie Deficit = Desired Weight Loss (kg) × 7700 kcal/kg

Daily Calorie Deficit = Weekly Calorie Deficit / 7 days

Step 4: Determine Target Daily Calorie Intake

Target Daily Calories = TDEE – Daily Calorie Deficit

For endomorphs, while this calculation provides a baseline, it's often recommended to monitor progress closely and potentially adjust (e.g., slightly higher deficit if tolerance allows, or focus on nutrient timing like carb cycling). Some calculators might also incorporate body fat percentage to refine BMR calculations, though Mifflin-St Jeor is primarily weight-based.

Variables Table

Variables Used in Calculation
Variable Meaning Unit Typical Range
Weight Current body weight kg 30 – 200+
Height Body height cm 100 – 220
Age Age in years years 10 – 100+
Gender Biological sex N/A Male / Female
Activity Level Frequency and intensity of exercise/daily movement N/A Sedentary to Extra Active
Body Fat Percentage Proportion of body mass that is fat tissue % 5 – 60
Weekly Weight Loss Goal Target rate of weight loss per week kg/week 0.1 – 2.0
BMR Calories burned at rest kcal/day ~1000 – 2500+
TDEE Total calories burned daily kcal/day ~1500 – 4000+
Daily Calorie Deficit Reduction in daily calorie intake for weight loss kcal/day ~250 – 1000+
Target Daily Calories Recommended daily calorie intake for weight loss kcal/day ~1200 – 3000+

Practical Examples (Real-World Use Cases)

Here are a couple of examples demonstrating how the **Endomorph Calorie Calculator for Weight Loss** works:

Example 1: Sarah, the Moderately Active Endomorph

Sarah is 35 years old, weighs 75 kg, is 165 cm tall, and identifies as an endomorph. She estimates her body fat percentage at 35%. She engages in moderate exercise 4 days a week and wants to lose 0.5 kg per week.

  • Inputs: Weight: 75 kg, Height: 165 cm, Age: 35, Gender: Female, Activity: Moderately Active, Body Fat: 35%, Goal: 0.5 kg/week.
  • Calculations:
    • BMR (Female): (10 * 75) + (6.25 * 165) – (5 * 35) – 161 = 750 + 1031.25 – 175 – 161 = 1445.25 kcal
    • TDEE (Moderately Active): 1445.25 * 1.55 = 2239.14 kcal
    • Weekly Deficit: 0.5 kg * 7700 kcal/kg = 3850 kcal
    • Daily Deficit: 3850 kcal / 7 = 550 kcal
    • Target Daily Calories: 2239.14 – 550 = 1689.14 kcal
  • Result: Sarah's target daily calorie intake for losing 0.5 kg per week is approximately 1690 kcal. She should focus on whole foods, lean proteins, healthy fats, and complex carbohydrates, while monitoring her body's response.

Example 2: Mark, the Sedentary Endomorph

Mark is 42 years old, weighs 95 kg, is 180 cm tall, and has a higher body fat percentage (around 40%). He works a desk job and gets very little exercise. He aims for a more significant but safe weight loss of 1 kg per week.

  • Inputs: Weight: 95 kg, Height: 180 cm, Age: 42, Gender: Male, Activity: Sedentary, Body Fat: 40%, Goal: 1.0 kg/week.
  • Calculations:
    • BMR (Male): (10 * 95) + (6.25 * 180) – (5 * 42) + 5 = 950 + 1125 – 210 + 5 = 1870 kcal
    • TDEE (Sedentary): 1870 * 1.2 = 2244 kcal
    • Weekly Deficit: 1.0 kg * 7700 kcal/kg = 7700 kcal
    • Daily Deficit: 7700 kcal / 7 = 1100 kcal
    • Target Daily Calories: 2244 – 1100 = 1144 kcal
  • Result: Mark's calculated target daily calorie intake is approximately 1144 kcal. However, this is quite low and might be difficult to sustain or provide adequate nutrients. For endomorphs aiming for 1kg/week loss with a sedentary lifestyle, a more realistic goal might be 0.5 kg/week, leading to a target of around 1700 kcal. It's crucial for Mark to consult a professional to ensure safety and effectiveness.

How to Use This Endomorph Calorie Calculator for Weight Loss

Using the **Endomorph Calorie Calculator for Weight Loss** is straightforward. Follow these steps to get your personalized calorie target:

  1. Step 1: Input Your Data
    • Body Weight (kg): Enter your current weight in kilograms.
    • Height (cm): Enter your height in centimeters.
    • Age (years): Input your current age.
    • Gender: Select 'Male' or 'Female'.
    • Activity Level: Choose the option that best describes your typical weekly physical activity. Be honest!
    • Body Fat Percentage (%): Estimate your body fat percentage. This helps refine the understanding of your composition.
    • Weekly Weight Loss Goal (kg): Specify how much weight you aim to lose each week (e.g., 0.5 kg is generally considered sustainable).
  2. Step 2: Calculate

    Click the "Calculate Calories" button. The calculator will instantly process your inputs.

  3. Step 3: Review Your Results
    • BMR (Basal Metabolic Rate): The calories your body burns at complete rest.
    • TDEE (Total Daily Energy Expenditure): Your estimated total daily calorie burn, including activity.
    • Calorie Deficit Needed: The daily calorie reduction required to meet your weight loss goal.
    • Target Daily Calories: This is the primary result – the number of calories you should aim to consume daily.
  4. Step 4: Interpret and Act

    Your target daily calories indicate the intake needed for weight loss. For endomorphs, it's often wise to focus on nutrient-dense foods, adequate protein, healthy fats, and complex carbohydrates. Monitor your progress and adjust as needed. Use the "Copy Results" button to save your calculations and the "Reset" button to start over.

Remember, this calculator provides an estimate. Individual metabolic rates can vary. Listen to your body and consult with a healthcare professional or registered dietitian for personalized advice.

Key Factors That Affect Endomorph Calorie Calculator for Weight Loss Results

While the calculator uses established formulas, several factors can influence the accuracy and effectiveness of the results for an endomorph trying to lose weight:

  1. Metabolic Adaptation: As you lose weight, your metabolism may slow down slightly. This means your TDEE might decrease, requiring future adjustments to your calorie intake to continue losing weight.
  2. Body Composition (Muscle vs. Fat): Endomorphs often have a higher body fat percentage. Muscle tissue burns more calories at rest than fat tissue. The body fat percentage input provides a hint, but building lean muscle mass through resistance training is crucial for boosting long-term calorie expenditure.
  3. Hormonal Fluctuations: Hormones like insulin, cortisol, and thyroid hormones significantly impact metabolism and fat storage. Imbalances can affect weight loss regardless of calorie intake. For endomorphs, managing insulin response through diet is often key.
  4. Nutrient Timing and Food Quality: While the calculator focuses on total calories, *when* and *what* you eat matters. Endomorphs may benefit from prioritizing protein and fiber, timing carbohydrate intake strategically (e.g., around workouts), and focusing on whole, unprocessed foods over refined options.
  5. Digestive Health: A healthy gut microbiome plays a role in nutrient absorption and metabolism. Issues like bloating or slow digestion, sometimes common in endomorphs, can influence how effectively your body processes food and loses weight.
  6. Sleep Quality and Stress Levels: Poor sleep and chronic stress elevate cortisol levels, which can promote fat storage (especially abdominal fat) and increase appetite, counteracting weight loss efforts.
  7. Hydration: Adequate water intake is essential for metabolic processes and can help manage appetite. Dehydration can slow metabolism.
  8. Genetics: While we categorize body types, individual genetic predispositions influence metabolism, fat storage patterns, and response to different macronutrient ratios.

Frequently Asked Questions (FAQ)

What is the ideal macronutrient split for an endomorph losing weight?

For endomorphs, a common recommendation is a higher protein intake (1.6-2.2g/kg body weight), moderate healthy fats (20-30% of calories), and moderate to lower complex carbohydrates. The exact ratio varies; monitoring blood sugar response and energy levels is key. Focus on whole grains, vegetables, and lean proteins.

Can endomorphs build muscle while losing weight?

Yes, it's possible, especially for beginners or those returning to training after a break. This is often called body recomposition. It requires a carefully managed calorie deficit, sufficient protein intake, and consistent resistance training. The results might be slower than aggressive fat loss.

How much weight can an endomorph realistically lose per week?

A sustainable and healthy rate of weight loss is typically 0.5 kg to 1 kg per week. For endomorphs who may gain fat more easily, starting with 0.5 kg/week and adjusting based on progress and adherence is often recommended for long-term success and muscle preservation.

Should endomorphs avoid all carbohydrates for weight loss?

Not necessarily. While some endomorphs are sensitive to refined carbohydrates, completely eliminating them can be unsustainable and may deprive the body of essential nutrients and energy. Focusing on complex carbohydrates from sources like vegetables, legumes, and whole grains, and managing portion sizes is usually more effective.

How does body fat percentage affect the calorie calculation?

While the Mifflin-St Jeor equation used here doesn't directly use body fat percentage, knowing it helps contextualize results. A higher body fat percentage suggests a lower metabolic rate relative to total weight, meaning a greater proportion of weight loss should ideally come from fat. Some more complex formulas incorporate it to adjust BMR more precisely.

What if I'm not losing weight despite following the calorie target?

Several factors could be at play: inaccurate calorie tracking, underestimated TDEE, slowed metabolism, hormonal issues, or insufficient activity. Re-evaluate your food logging accuracy, consider a slight reduction in calories (ensure it's still above 1200 kcal), increase activity, or consult a healthcare professional.

How long should I follow the calculated calorie target?

Continue following the target as long as you are making progress towards your goals and feel healthy and energized. As you lose weight, your TDEE will decrease, so you'll need to recalculate periodically (e.g., every 5-10 kg lost) or adjust your intake to maintain the deficit.

Can this calculator be used for bulking or maintenance?

This specific calculator is optimized for weight loss by creating a deficit. To maintain weight, you would aim to eat at your TDEE. For bulking (muscle gain), you would need to consume above your TDEE. While the BMR and TDEE calculations are the same, the deficit calculation would be replaced with a surplus.

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var chartInstance = null; function calculateBmr(weightKg, heightCm, age, gender) { var bmr = 0; if (gender === 'male') { bmr = (10 * weightKg) + (6.25 * heightCm) – (5 * age) + 5; } else { // female bmr = (10 * weightKg) + (6.25 * heightCm) – (5 * age) – 161; } return parseFloat(bmr.toFixed(2)); } function calculateTdee(bmr, activityLevel) { var activityMultiplier = 1.2; // Sedentary if (activityLevel === 'lightly_active') { activityMultiplier = 1.375; } else if (activityLevel === 'moderately_active') { activityMultiplier = 1.55; } else if (activityLevel === 'very_active') { activityMultiplier = 1.725; } else if (activityLevel === 'extra_active') { activityMultiplier = 1.9; } var tdee = bmr * activityMultiplier; return parseFloat(tdee.toFixed(2)); } function validateInput(id, errorId, min, max) { var input = document.getElementById(id); var errorElement = document.getElementById(errorId); var value = parseFloat(input.value); var isValid = true; errorElement.style.display = 'none'; // Hide error initially input.style.borderColor = 'var(–border-color)'; // Reset border color if (isNaN(value) || input.value.trim() === "") { errorElement.textContent = "This field is required."; errorElement.style.display = 'block'; input.style.borderColor = 'var(–error-color)'; isValid = false; } else if (value <= 0) { errorElement.textContent = "Value cannot be zero or negative."; errorElement.style.display = 'block'; input.style.borderColor = 'var(–error-color)'; isValid = false; } else if (min !== undefined && value max) { errorElement.textContent = "Value is too high."; errorElement.style.display = 'block'; input.style.borderColor = 'var(–error-color)'; isValid = false; } return isValid; } function validateBodyFat(id, errorId) { var input = document.getElementById(id); var errorElement = document.getElementById(errorId); var value = parseFloat(input.value); var isValid = true; errorElement.style.display = 'none'; // Hide error initially input.style.borderColor = 'var(–border-color)'; // Reset border color if (isNaN(value) || input.value.trim() === "") { errorElement.textContent = "This field is required."; errorElement.style.display = 'block'; input.style.borderColor = 'var(–error-color)'; isValid = false; } else if (value 99) { errorElement.textContent = "Value must be between 1% and 99%."; errorElement.style.display = 'block'; input.style.borderColor = 'var(–error-color)'; isValid = false; } return isValid; } function validateWeightLossGoal(id, errorId) { var input = document.getElementById(id); var errorElement = document.getElementById(errorId); var value = parseFloat(input.value); var isValid = true; errorElement.style.display = 'none'; // Hide error initially input.style.borderColor = 'var(–border-color)'; // Reset border color if (isNaN(value) || input.value.trim() === "") { errorElement.textContent = "This field is required."; errorElement.style.display = 'block'; input.style.borderColor = 'var(–error-color)'; isValid = false; } else if (value 2) { // Max 2kg/week is generally safe advice errorElement.textContent = "Goal must be between 0.1kg and 2kg."; errorElement.style.display = 'block'; input.style.borderColor = 'var(–error-color)'; isValid = false; } return isValid; } function calculateCalories() { // Clear previous errors document.getElementById('bodyWeightError').style.display = 'none'; document.getElementById('heightCmError').style.display = 'none'; document.getElementById('ageError').style.display = 'none'; document.getElementById('bodyFatPercentageError').style.display = 'none'; document.getElementById('weightLossGoalError').style.display = 'none'; var weightKgValid = validateInput('bodyWeight', 'bodyWeightError'); var heightCmValid = validateInput('heightCm', 'heightCmError', 10, 300); var ageValid = validateInput('age', 'ageError', 1, 120); var bodyFatValid = validateBodyFat('bodyFatPercentage', 'bodyFatPercentageError'); var weightLossGoalValid = validateWeightLossGoal('weightLossGoal', 'weightLossGoalError'); if (!weightKgValid || !heightCmValid || !ageValid || !bodyFatValid || !weightLossGoalValid) { return; // Stop calculation if any validation fails } var weightKg = parseFloat(document.getElementById('bodyWeight').value); var heightCm = parseFloat(document.getElementById('heightCm').value); var age = parseInt(document.getElementById('age').value); var gender = document.getElementById('gender').value; var activityLevel = document.getElementById('activityLevel').value; var bodyFatPercentage = parseFloat(document.getElementById('bodyFatPercentage').value); var weeklyWeightLossGoal = parseFloat(document.getElementById('weightLossGoal').value); var bmr = calculateBmr(weightKg, heightCm, age, gender); var tdee = calculateTdee(bmr, activityLevel); var kcalPerKgFat = 7700; var weeklyKcalDeficit = weeklyWeightLossGoal * kcalPerKgFat; var dailyKcalDeficit = weeklyKcalDeficit / 7; var targetCalories = tdee – dailyKcalDeficit; // Ensure target calories are not excessively low, especially for endomorphs // A common minimum is around 1200 kcal for women, 1500 kcal for men var minKcal = (gender === 'female') ? 1200 : 1500; if (targetCalories < minKcal) { targetCalories = minKcal; dailyKcalDeficit = tdee – targetCalories; // Recalculate deficit if minimum is applied // Optionally, inform user about the adjusted target } document.getElementById('bmrResult').textContent = bmr.toFixed(0) + ' kcal'; document.getElementById('tdeeResult').textContent = tdee.toFixed(0) + ' kcal'; document.getElementById('deficitResult').textContent = dailyKcalDeficit.toFixed(0) + ' kcal'; document.getElementById('targetCaloriesResult').textContent = targetCalories.toFixed(0) + ' kcal'; // Update table document.getElementById('tableBmr').textContent = bmr.toFixed(0); document.getElementById('tableTdee').textContent = tdee.toFixed(0); document.getElementById('tableTarget').textContent = targetCalories.toFixed(0); // Macronutrient Calculation (Example Split: 30% Protein, 25% Fat, 45% Carbs) // Adjustments for endomorphs might favor higher protein and moderate carbs/fats. var proteinCalories = targetCalories * 0.35; // ~35% Protein var fatCalories = targetCalories * 0.25; // ~25% Fat var carbCalories = targetCalories * 0.40; // ~40% Carbs var proteinGrams = (proteinCalories / 4).toFixed(0); // 4 kcal per gram of protein var fatGrams = (fatCalories / 9).toFixed(0); // 9 kcal per gram of fat var carbGrams = (carbCalories / 4).toFixed(0); // 4 kcal per gram of carbs document.getElementById('tableProtein').textContent = proteinGrams + ' g'; document.getElementById('tableFat').textContent = fatGrams + ' g'; document.getElementById('tableCarbs').textContent = carbGrams + ' g'; updateChart(tdee, targetCalories); } function resetForm() { document.getElementById('bodyWeight').value = '70'; document.getElementById('heightCm').value = '170'; document.getElementById('age').value = '30'; document.getElementById('gender').value = 'male'; document.getElementById('activityLevel').value = 'sedentary'; document.getElementById('bodyFatPercentage').value = '30'; document.getElementById('weightLossGoal').value = '0.5'; // Clear results and table placeholders document.getElementById('bmrResult').textContent = '– kcal'; document.getElementById('tdeeResult').textContent = '– kcal'; document.getElementById('deficitResult').textContent = '– kcal'; document.getElementById('targetCaloriesResult').textContent = '– kcal'; document.getElementById('tableBmr').textContent = '–'; document.getElementById('tableTdee').textContent = '–'; document.getElementById('tableTarget').textContent = '–'; document.getElementById('tableProtein').textContent = '–'; document.getElementById('tableFat').textContent = '–'; document.getElementById('tableCarbs').textContent = '–'; // Clear chart var canvas = document.getElementById('calorieChart'); var ctx = canvas.getContext('2d'); ctx.clearRect(0, 0, canvas.width, canvas.height); if (chartInstance) { chartInstance.destroy(); chartInstance = null; } // Clear errors document.getElementById('bodyWeightError').style.display = 'none'; document.getElementById('heightCmError').style.display = 'none'; document.getElementById('ageError').style.display = 'none'; document.getElementById('bodyFatPercentageError').style.display = 'none'; document.getElementById('weightLossGoalError').style.display = 'none'; document.getElementById('bodyWeight').style.borderColor = 'var(–border-color)'; document.getElementById('heightCm').style.borderColor = 'var(–border-color)'; document.getElementById('age').style.borderColor = 'var(–border-color)'; document.getElementById('bodyFatPercentage').style.borderColor = 'var(–border-color)'; document.getElementById('weightLossGoal').style.borderColor = 'var(–border-color)'; } function copyResults() { var bmr = document.getElementById('bmrResult').textContent; var tdee = document.getElementById('tdeeResult').textContent; var deficit = document.getElementById('deficitResult').textContent; var target = document.getElementById('targetCaloriesResult').textContent; var protein = document.getElementById('tableProtein').textContent; var fat = document.getElementById('tableFat').textContent; var carbs = document.getElementById('tableCarbs').textContent; var assumptions = [ "Gender: " + document.getElementById('gender').value, "Activity Level: " + document.getElementById('activityLevel').options[document.getElementById('activityLevel').selectedIndex].text, "Weekly Weight Loss Goal: " + document.getElementById('weightLossGoal').value + " kg" ]; var textToCopy = "— Endomorph Calorie Calculation Results —\n\n"; textToCopy += "Primary Result: Target Daily Calories: " + target + "\n"; textToCopy += "Basal Metabolic Rate (BMR): " + bmr + "\n"; textToCopy += "Total Daily Energy Expenditure (TDEE): " + tdee + "\n"; textToCopy += "Calorie Deficit Needed: " + deficit + "\n\n"; textToCopy += "— Macronutrient Breakdown —\n"; textToCopy += "Protein: " + protein + "\n"; textToCopy += "Fat: " + fat + "\n"; textToCopy += "Carbohydrates: " + carbs + "\n\n"; textToCopy += "— Key Assumptions —\n"; textToCopy += assumptions.join("\n") + "\n"; textToCopy += "\n(Calculated using Mifflin-St Jeor equation and standard deficit principles)"; // Use a temporary textarea to copy text to clipboard var tempTextArea = document.createElement("textarea"); tempTextArea.value = textToCopy; tempTextArea.style.position = "absolute"; tempTextArea.style.left = "-9999px"; document.body.appendChild(tempTextArea); tempTextArea.select(); try { document.execCommand("copy"); alert("Results copied to clipboard!"); } catch (e) { console.error("Failed to copy: ", e); alert("Failed to copy results. Please copy manually."); } finally { document.body.removeChild(tempTextArea); } } function updateChart(tdee, targetCalories) { var canvas = document.getElementById('calorieChart'); var ctx = canvas.getContext('2d'); // Destroy previous chart instance if it exists if (chartInstance) { chartInstance.destroy(); } // Define chart data var data = { labels: ['Estimated TDEE', 'Target Daily Calories'], datasets: [{ label: 'Calories (kcal)', data: [tdee, targetCalories], backgroundColor: [ 'rgba(0, 74, 153, 0.6)', // Primary Color for TDEE 'rgba(40, 167, 69, 0.6)' // Success Color for Target Calories ], borderColor: [ 'rgba(0, 74, 153, 1)', 'rgba(40, 167, 69, 1)' ], borderWidth: 1 }] }; // Chart configuration var options = { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true, ticks: { // Format ticks to include ' kcal' callback: function(value) { return value + ' kcal'; } } } }, plugins: { legend: { display: false // Legend is handled by custom div }, tooltip: { callbacks: { label: function(context) { var label = context.dataset.label || ''; if (label) { label += ': '; } if (context.parsed.y !== null) { label += context.parsed.y + ' kcal'; } return label; } } } } }; // Create new chart instance // Ensure Chart is globally available or imported if using a module system // For this single file setup, assuming Chart.js is available globally (though not included here) // If Chart.js is NOT included, this part will fail. Native canvas drawing would be alternative. // For demonstration, let's implement a simple manual drawing if Chart.js is unavailable. // **IMPORTANT**: The following code requires Chart.js library to be included // If Chart.js is not included, this part will cause errors. // To make this fully self-contained WITHOUT external libraries, we'd need to draw manually using canvas API. // For now, assuming Chart.js would be loaded externally or inline for a full solution. // **Since the prompt requires NO EXTERNAL LIBRARIES, we will replace this with manual SVG/Canvas drawing** // — Manual Canvas Drawing (as Chart.js is not allowed) — canvas.height = 300; // Set a fixed height for canvas ctx.clearRect(0, 0, canvas.width, canvas.height); // Clear canvas var chartHeight = canvas.height; var chartWidth = canvas.width; var barPadding = 10; var groupSpacing = 40; // Space between the two bars // Find max value for scaling var maxValue = Math.max(tdee, targetCalories); var scale = (chartHeight – 50) / maxValue; // 50px for labels and padding at top // Draw bars var tdeeBarHeight = tdee * scale; var targetBarHeight = targetCalories * scale; // TDEE Bar (Primary Color) ctx.fillStyle = 'rgba(0, 74, 153, 0.6)'; ctx.fillRect(chartWidth / 2 – groupSpacing / 2, chartHeight – tdeeBarHeight – 20, 30, tdeeBarHeight); // Adjusted X position and width ctx.fillStyle = 'rgba(0, 74, 153, 1)'; ctx.fillRect(chartWidth / 2 – groupSpacing / 2, chartHeight – tdeeBarHeight – 20, 30, 5); // Top border // Target Calories Bar (Success Color) ctx.fillStyle = 'rgba(40, 167, 69, 0.6)'; ctx.fillRect(chartWidth / 2 – groupSpacing / 2 + 30 + barPadding, chartHeight – targetBarHeight – 20, 30, targetBarHeight); // Adjusted X position and width ctx.fillStyle = 'rgba(40, 167, 69, 1)'; ctx.fillRect(chartWidth / 2 – groupSpacing / 2 + 30 + barPadding, chartHeight – targetBarHeight – 20, 30, 5); // Top border // Draw labels and values ctx.fillStyle = '#333'; ctx.font = '12px Segoe UI'; ctx.textAlign = 'center'; // TDEE Label ctx.fillText('TDEE', chartWidth / 2 – groupSpacing / 2 + 15, chartHeight – 10); ctx.fillText(tdee.toFixed(0) + ' kcal', chartWidth / 2 – groupSpacing / 2 + 15, chartHeight – tdeeBarHeight – 30); // Target Calories Label ctx.fillText('Target', chartWidth / 2 – groupSpacing / 2 + 30 + barPadding + 15, chartHeight – 10); ctx.fillText(targetCalories.toFixed(0) + ' kcal', chartWidth / 2 – groupSpacing / 2 + 30 + barPadding + 15, chartHeight – targetBarHeight – 30); // Y-axis scale markers (simplified) var tickInterval = Math.ceil(maxValue / 5 / 100) * 100; // Ensure ticks are round numbers if (tickInterval === 0) tickInterval = 100; for (var i = 0; i <= maxValue + tickInterval; i += tickInterval) { var yPos = chartHeight – (i * scale) – 20; if (yPos < chartHeight – 20) { // Don't draw above top ctx.fillText(i + ' kcal', 40, yPos); ctx.beginPath(); ctx.moveTo(55, yPos); ctx.lineTo(60, yPos); ctx.stroke(); } } // Draw Y-axis line ctx.beginPath(); ctx.moveTo(55, 20); ctx.lineTo(55, chartHeight – 20); ctx.stroke(); // Draw X-axis line ctx.beginPath(); ctx.moveTo(chartWidth / 2 – groupSpacing / 2, chartHeight – 20); ctx.lineTo(chartWidth / 2 – groupSpacing / 2 + 60 + barPadding, chartHeight – 20); ctx.stroke(); } // Initial calculation on page load document.addEventListener('DOMContentLoaded', function() { calculateCalories(); // FAQ toggle functionality var faqItems = document.querySelectorAll('.faq-item h4'); faqItems.forEach(function(item) { item.addEventListener('click', function() { var parent = this.parentElement; parent.classList.toggle('active'); }); }); });

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