Height and Weight Calculator Visual

Height and Weight Calculator Visual – Calculate Your Ideal Metrics :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –border-color: #ccc; –card-background: #fff; –shadow: 0 2px 10px rgba(0,0,0,0.1); } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); line-height: 1.6; margin: 0; padding: 0; display: flex; justify-content: center; padding: 20px; } .main-container { max-width: 1000px; width: 100%; background-color: var(–card-background); border-radius: 8px; box-shadow: var(–shadow); overflow: hidden; } header { background-color: var(–primary-color); color: white; padding: 20px; text-align: center; border-bottom: 3px solid var(–success-color); } header h1 { margin: 0; font-size: 2.5em; font-weight: 600; } .calculator-section { padding: 30px; } .loan-calc-container { background-color: var(–card-background); padding: 30px; border-radius: 8px; box-shadow: var(–shadow); margin-bottom: 30px; } .loan-calc-container h2 { text-align: center; color: var(–primary-color); margin-bottom: 25px; font-size: 1.8em; } .input-group { margin-bottom: 20px; text-align: left; } .input-group label { display: block; margin-bottom: 8px; font-weight: 500; color: var(–primary-color); } .input-group input[type="number"], .input-group select { width: calc(100% – 20px); padding: 10px; border: 1px solid var(–border-color); border-radius: 5px; font-size: 1em; box-sizing: border-box; } .input-group .helper-text { font-size: 0.85em; color: #666; margin-top: 5px; display: block; } .input-group .error-message { color: red; font-size: 0.8em; margin-top: 5px; min-height: 1.2em; } .button-group { display: flex; justify-content: space-between; margin-top: 25px; gap: 10px; } .button-group button { padding: 12px 20px; border: none; border-radius: 5px; font-size: 1em; cursor: pointer; transition: background-color 0.3s ease; font-weight: 500; flex: 1; min-width: 120px; } .button-group button.calculate-btn { background-color: var(–primary-color); color: white; } .button-group button.calculate-btn:hover { background-color: #003366; } .button-group button.reset-btn { background-color: #ffc107; color: black; } .button-group button.reset-btn:hover { background-color: #e0a800; } .button-group button.copy-btn { background-color: var(–success-color); color: white; } .button-group button.copy-btn:hover { background-color: #1e7e34; } #results { margin-top: 30px; padding: 25px; background-color: var(–primary-color); color: white; border-radius: 8px; text-align: center; box-shadow: inset 0 0 15px rgba(0,0,0,0.2); } #results h3 { margin-top: 0; font-size: 1.6em; color: #fff; margin-bottom: 15px; } #results .primary-result { font-size: 2.8em; font-weight: bold; margin-bottom: 15px; padding: 10px 15px; display: inline-block; background-color: var(–success-color); border-radius: 5px; color: white; } #results .secondary-results { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 15px; margin-bottom: 20px; font-size: 1.1em; } #results .result-item { background-color: rgba(255, 255, 255, 0.15); padding: 10px 15px; border-radius: 5px; min-width: 120px; } #results .result-item span { display: block; font-weight: bold; font-size: 1.3em; } #results .formula-explanation { font-size: 0.9em; color: rgba(255, 255, 255, 0.8); margin-top: 10px; } .chart-container, .table-container { margin-top: 30px; padding: 25px; background-color: var(–card-background); border-radius: 8px; box-shadow: var(–shadow); } .chart-container h3, .table-container h3 { text-align: center; color: var(–primary-color); margin-bottom: 20px; font-size: 1.8em; } canvas { display: block; margin: 0 auto; max-width: 100%; } table { width: 100%; border-collapse: collapse; margin-top: 15px; } th, td { padding: 12px; text-align: center; border: 1px solid var(–border-color); } thead th { background-color: var(–primary-color); color: white; font-weight: bold; } tbody tr:nth-child(even) { background-color: #f2f2f2; } tbody tr:hover { background-color: #e0e0e0; } .article-section { padding: 30px; background-color: var(–card-background); border-radius: 8px; box-shadow: var(–shadow); margin-top: 30px; } .article-section h2 { color: var(–primary-color); margin-bottom: 15px; border-bottom: 2px solid var(–primary-color); padding-bottom: 5px; } .article-section h3 { color: var(–primary-color); margin-top: 20px; margin-bottom: 10px; } .article-section p, .article-section ul, .article-section ol { margin-bottom: 15px; } .article-section ul, .article-section ol { padding-left: 25px; } .article-section a { color: var(–primary-color); text-decoration: none; font-weight: 500; } .article-section a:hover { text-decoration: underline; } .internal-links-list a { font-weight: bold; margin-right: 15px; } .internal-links-list span { font-size: 0.9em; color: #555; } .faq-item { margin-bottom: 15px; } .faq-item h4 { color: var(–primary-color); margin-bottom: 5px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; } .faq-item h4:after { content: '+'; font-size: 1.2em; color: var(–primary-color); transition: transform 0.3s ease; } .faq-item.active h4:after { content: '-'; transform: rotate(0deg); } .faq-item .answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease-out; color: #555; padding-left: 10px; border-left: 2px solid var(–primary-color); margin-top: 5px; } .faq-item.active .answer { max-height: 200px; /* Adjust as needed */ padding-left: 15px; padding-right: 15px; padding-bottom: 10px; } @media (max-width: 768px) { header h1 { font-size: 1.8em; } .calculator-section, .article-section { padding: 20px; } .button-group { flex-direction: column; } .button-group button { width: 100%; } #results .secondary-results { flex-direction: column; align-items: center; } }

Height and Weight Calculator Visual

Understand Your Body Metrics with Precision

Body Metrics Calculator

Enter your height in centimeters (e.g., 170).
Enter your weight in kilograms (e.g., 70).
Metric (cm, kg) Imperial (in, lbs) Select your preferred unit system.
Enter your age for more tailored insights (e.g., 30).
Unspecified Male Female Select your gender for more accurate ideal weight ranges.

Your Health Metrics

Ideal Weight Range:
BMI Category:
Metabolic Rate (BMR):
Calculations based on standard BMI, ideal weight formulas, and Mifflin-St Jeor Equation for BMR.

BMI vs. Ideal Weight Visualization

Visual representation of your BMI and ideal weight range.

BMI Categories Explained

BMI Range Category Health Implications
Below 18.5 Underweight May indicate malnutrition, immune deficiency, or other health issues.
18.5 – 24.9 Healthy Weight Associated with lower risk of chronic diseases.
25.0 – 29.9 Overweight Increased risk of heart disease, diabetes, and other conditions.
30.0 – 34.9 Obesity (Class I) Significantly increased risk of health problems.
35.0 – 39.9 Obesity (Class II) Severe obesity with higher risk of complications.
40.0 and above Obesity (Class III) Extreme obesity with very high health risks.

What is a Height and Weight Calculator Visual?

A height and weight calculator visual is an interactive online tool designed to help individuals understand their body composition and health status based on their physical measurements. It typically takes height and weight as primary inputs and calculates key health indicators such as Body Mass Index (BMI), ideal weight range, and sometimes Basal Metabolic Rate (BMR). The "visual" aspect implies that the results are presented clearly, often with charts or graphics, making complex health data more accessible and understandable. This tool serves as a user-friendly way to gauge general health and identify potential areas for lifestyle adjustments. Understanding these metrics is a crucial first step towards a healthier lifestyle, making the height and weight calculator visual a valuable resource for many.

Who Should Use It?

Anyone interested in their general health and well-being can benefit from using a height and weight calculator visual. This includes:

  • Individuals looking to manage their weight (gain or lose).
  • People seeking to understand their current health status relative to recommended ranges.
  • Those embarking on a fitness or nutrition journey.
  • Healthcare professionals who want to provide quick, preliminary assessments to patients.
  • Researchers or students studying anthropometry and health.

Common Misconceptions

One of the biggest misconceptions is that BMI is a definitive measure of health. While useful, BMI doesn't distinguish between muscle and fat mass, meaning a very muscular person might register as "overweight" even if they are healthy. Another misconception is that there's a single "ideal" weight for everyone; in reality, ideal weight ranges vary based on factors like age, gender, muscle mass, and body frame. The height and weight calculator visual aims to provide a more nuanced view by including these optional parameters and explaining the limitations of the core metrics.

Height and Weight Calculator Visual Formula and Mathematical Explanation

The core of a height and weight calculator visual relies on established formulas to derive meaningful health metrics. The most common are BMI, ideal weight formulas, and BMR equations.

Body Mass Index (BMI)

BMI is a widely used metric to assess weight relative to height. It's calculated as follows:

  • Metric: Weight (kg) / [Height (m)]²
  • Imperial: [Weight (lbs) / (Height (in))²] * 703

To use the metric formula with cm, height must first be converted to meters (cm / 100).

Ideal Weight Range

Ideal weight ranges provide a target zone for healthy weight based on height, often adjusted for gender. A common approach is the Hamwi formula, though variations exist:

  • For Men (Imperial): 106 lbs for the first 5 feet + 6 lbs for each inch over 5 feet.
  • For Women (Imperial): 100 lbs for the first 5 feet + 5 lbs for each inch over 5 feet.

These can be adjusted by +/- 10% to create a range. For metric, conversions and specific formulas exist, often derived from these principles.

Basal Metabolic Rate (BMR)

BMR is the number of calories your body burns at rest. The Mifflin-St Jeor Equation is considered one of the most accurate:

  • For Men: (10 * weight in kg) + (6.25 * height in cm) – (5 * age in years) + 5
  • For Women: (10 * weight in kg) + (6.25 * height in cm) – (5 * age in years) – 161

If age is not provided, BMR cannot be calculated accurately by this formula. The height and weight calculator visual uses these standard formulas.

Variables Table

Variable Meaning Unit Typical Range
Height Individual's vertical measurement cm (metric) / inches (imperial) 140 cm – 200 cm (approx. 4'7″ – 6'7″)
Weight Individual's mass kg (metric) / lbs (imperial) 30 kg – 150 kg (approx. 66 lbs – 330 lbs)
Age Individual's lifespan Years 1 – 120 years
Gender Biological sex Male / Female / Unspecified N/A
BMI Body Mass Index kg/m² 15 – 40+
Ideal Weight Range Recommended healthy weight boundaries kg / lbs Varies significantly with height
BMR Basal Metabolic Rate kcal/day 1200 – 2000+ kcal/day

Practical Examples (Real-World Use Cases)

Example 1: Sarah, a 28-year-old woman

Sarah is 165 cm tall and weighs 62 kg. She is concerned about her weight and wants to know if she is within a healthy range. She uses the height and weight calculator visual.

  • Inputs: Height = 165 cm, Weight = 62 kg, Age = 28, Gender = Female
  • Calculations:
    • Height in meters = 1.65 m
    • BMI = 62 / (1.65 * 1.65) = 22.78 kg/m²
    • Ideal Weight Range (using a common formula estimate for women): Approx. 52 kg – 57 kg
    • BMR (Mifflin-St Jeor for Women) = (10 * 62) + (6.25 * 165) – (5 * 28) – 161 = 620 + 1031.25 – 140 – 161 = 1350.25 kcal/day
  • Outputs:
    • Primary Result (BMI): 22.8
    • Ideal Weight Range: 52 kg – 57 kg
    • BMI Category: Healthy Weight
    • BMR: ~1350 kcal/day
  • Interpretation: Sarah's BMI falls within the healthy weight range. Her current weight is slightly above the calculated ideal range, suggesting she might be carrying a bit more weight than typically recommended for her height and gender. Her BMR indicates the baseline calories her body needs.

Example 2: David, a 45-year-old man

David is 185 cm tall and weighs 95 kg. He has been gaining weight over the last few years and wants a clear picture of his health metrics. He uses the height and weight calculator visual.

  • Inputs: Height = 185 cm, Weight = 95 kg, Age = 45, Gender = Male
  • Calculations:
    • Height in meters = 1.85 m
    • BMI = 95 / (1.85 * 1.85) = 27.78 kg/m²
    • Ideal Weight Range (using a common formula estimate for men): Approx. 73 kg – 80 kg
    • BMR (Mifflin-St Jeor for Men) = (10 * 95) + (6.25 * 185) – (5 * 45) + 5 = 950 + 1156.25 – 225 + 5 = 1886.25 kcal/day
  • Outputs:
    • Primary Result (BMI): 27.8
    • Ideal Weight Range: 73 kg – 80 kg
    • BMI Category: Overweight
    • BMR: ~1886 kcal/day
  • Interpretation: David's BMI falls into the 'Overweight' category. His current weight is significantly higher than his calculated ideal weight range. This indicates a potential increased risk for health issues associated with excess weight. His BMR shows his resting calorie needs, which would increase significantly if he were to lose weight.

How to Use This Height and Weight Calculator Visual

Using our height and weight calculator visual is straightforward and provides instant insights into your body composition. Follow these simple steps:

Step-by-Step Instructions

  1. Enter Height: Input your height accurately in centimeters (cm) or inches (in) based on your selected unit system.
  2. Enter Weight: Input your current weight accurately in kilograms (kg) or pounds (lbs) corresponding to your unit system.
  3. Select Unit System: Choose 'Metric' (cm, kg) or 'Imperial' (in, lbs) for your convenience. The calculator will automatically convert if you switch systems.
  4. Optional Inputs: For more personalized results, you can enter your Age and select your Gender (Male, Female, or Unspecified). This is particularly useful for more accurate ideal weight ranges and BMR calculations.
  5. Calculate: Click the "Calculate Metrics" button.
  6. Review Results: The calculator will instantly display your BMI, categorized BMI status, calculated ideal weight range, and BMR (if age and gender are provided).
  7. Visualize Data: Examine the chart for a visual comparison of your BMI and ideal weight, and refer to the table for detailed BMI category information.
  8. Copy Results: If you need to save or share your results, click the "Copy Results" button.
  9. Reset: To start over with default values, click the "Reset" button.

How to Read Results

  • Primary Result (BMI): This is your main metric. A higher BMI generally indicates a higher body fat percentage.
  • BMI Category: This classifies your BMI into ranges like Underweight, Healthy Weight, Overweight, or Obese. Refer to the table for details.
  • Ideal Weight Range: This suggests a weight zone considered healthy for your height, often adjusted for gender. It's a guideline, not a strict rule.
  • BMR Value: This is the minimum calories your body needs to function at rest. Your total daily calorie needs will be higher based on your activity level.

Decision-Making Guidance

Use the results as a starting point for health decisions:

  • If you are in the 'Underweight' or 'Overweight'/'Obese' categories, consider consulting a healthcare professional or a registered dietitian.
  • If your weight is above your ideal range, gradual, sustainable weight loss through diet and exercise is often recommended. Focus on a balanced diet and regular physical activity.
  • If you are within the 'Healthy Weight' range, maintaining this status through a balanced lifestyle is key.
  • The BMR gives you an idea of your baseline calorie expenditure, which can inform your dietary intake and exercise goals.

Remember, this tool provides estimates. For personalized medical advice, always consult a qualified healthcare provider.

Key Factors That Affect Height and Weight Calculator Results

While the formulas used in a height and weight calculator visual are standardized, several real-world factors can influence the interpretation and applicability of the results:

  1. Body Composition (Muscle vs. Fat): BMI does not differentiate between muscle mass and fat mass. A highly muscular individual may have a high BMI but low body fat, indicating good health. Conversely, someone with a "healthy" BMI might have a high percentage of body fat and low muscle mass, posing health risks.
  2. Age: Metabolic rate tends to decrease with age. The Mifflin-St Jeor equation accounts for age in BMR calculation. Ideal weight ranges might also implicitly consider typical body composition changes across different age groups, though explicit age-based ideal weight formulas are less common than for BMR.
  3. Gender: Biological differences in body composition (e.g., men typically have more muscle mass and less body fat than women of the same height and weight) influence ideal weight ranges and BMR calculations. Formulas like Mifflin-St Jeor have specific adjustments for gender.
  4. Body Frame Size: The calculators typically don't account for natural bone structure or frame size. Individuals with a large frame might naturally weigh more than those with a small frame, even if both are healthy. This is a limitation of standard BMI.
  5. Genetics: Individual genetic makeup plays a significant role in metabolism, body fat distribution, and predisposition to certain weight categories. What is considered "ideal" for one person might differ genetically for another.
  6. Activity Level: While BMR calculates resting metabolism, total daily energy expenditure (TDEE) is influenced by activity level. The calculator itself doesn't ask for activity level, but it's crucial for weight management decisions (i.e., how many calories to consume vs. burn).
  7. Hydration and Temporary Weight Fluctuations: Short-term factors like hydration levels, food intake, and water retention can cause daily weight fluctuations that don't reflect underlying body composition changes.

Frequently Asked Questions (FAQ)

What is the most accurate way to measure height and weight?

For height, stand barefoot against a wall and mark the top of your head, then measure the mark. For weight, use a calibrated digital scale, preferably in the morning after using the restroom and before eating or drinking. Consistency in measurement time and conditions is key.

Is BMI a good indicator of health?

BMI is a useful screening tool for identifying potential weight categories associated with health risks. However, it's not a diagnostic tool and doesn't account for body composition (muscle vs. fat). For a comprehensive health assessment, other factors like waist circumference, blood pressure, cholesterol levels, and fitness levels should be considered alongside BMI.

How often should I use a height and weight calculator visual?

If you are actively managing your weight or health, using it monthly or quarterly can help track progress. For general awareness, once or twice a year is usually sufficient. It's most effective when used consistently over time.

Can I use this calculator for children?

This specific calculator is primarily designed for adults. BMI calculation for children and adolescents uses different growth charts and considerations due to ongoing development. It's recommended to use pediatric-specific BMI calculators or consult a pediatrician for children's health metrics.

What does "ideal weight range" truly mean?

The "ideal weight range" is a calculated estimate based on population averages and simplified formulas. It represents a zone where individuals generally have a lower risk of weight-related health problems. It's not a rigid target, and factors like muscle mass and frame size mean some healthy individuals may fall slightly outside this range.

How does the unit system conversion work?

When you switch between 'Metric' and 'Imperial', the calculator converts your existing inputs (or default values) to the selected system. For example, if you input 170 cm and switch to Imperial, it converts 170 cm to approximately 66.9 inches. The calculations then proceed using the converted values.

Why is BMR calculation optional?

The Mifflin-St Jeor equation for BMR requires the user's age. Since age might not always be known or relevant for all users (e.g., a quick BMI check), these fields are optional. However, providing age and gender yields a more complete metabolic picture.

What if my weight is high due to muscle mass (e.g., athlete)?

This is a known limitation of BMI. If you are an athlete or have significant muscle mass, your BMI might classify you as overweight or obese even if your body fat percentage is healthy. In such cases, focus more on body fat percentage measurements (which require specialized equipment) and how you feel, rather than solely on BMI. The visual chart helps illustrate this by showing your current BMI against the ideal weight range.

Related Tools and Internal Resources

© 2023 Your Health Insights. All rights reserved.

var chartInstance = null; function calculateMetrics() { // Get input values var heightCmInput = document.getElementById('heightCm'); var weightKgInput = document.getElementById('weightKg'); var unitSystemSelect = document.getElementById('unitSystem'); var ageInput = document.getElementById('age'); var genderSelect = document.getElementById('gender'); var heightCmError = document.getElementById('heightCmError'); var weightKgError = document.getElementById('weightKgError'); var ageError = document.getElementById('ageError'); var primaryResultDiv = document.getElementById('primaryResult'); var idealWeightRangeSpan = document.getElementById('idealWeightRange'); var bmiCategorySpan = document.getElementById('bmiCategory'); var bmrValueSpan = document.getElementById('bmrValue'); // Clear previous errors heightCmError.textContent = "; weightKgError.textContent = "; ageError.textContent = "; // Initialize result placeholders primaryResultDiv.textContent = '–'; idealWeightRangeSpan.textContent = '–'; bmiCategorySpan.textContent = '–'; bmrValueSpan.textContent = '–'; // Parse values and perform validation var heightCm = parseFloat(heightCmInput.value); var weightKg = parseFloat(weightKgInput.value); var age = parseFloat(ageInput.value); var gender = genderSelect.value; var unitSystem = unitSystemSelect.value; var valid = true; // Height validation if (isNaN(heightCm) || heightCm 300) { heightCmError.textContent = 'Please enter a valid height between 1 and 300 cm.'; valid = false; } // Weight validation if (isNaN(weightKg) || weightKg 1000) { weightKgError.textContent = 'Please enter a valid weight between 1 and 1000 kg.'; valid = false; } // Age validation (optional, but if entered, must be valid) if (ageInput.value !== ") { if (isNaN(age) || age 120) { ageError.textContent = 'Please enter a valid age between 1 and 120.'; valid = false; } } else { age = 0; // Treat empty age as 0 for BMR calculation if needed, or handle BMR calculation separately } if (!valid) { return; // Stop calculation if validation fails } // Unit conversion if Imperial is selected var weightLb = weightKg; var heightIn = heightCm; if (unitSystem === 'imperial') { heightIn = heightCm / 2.54; weightLb = weightKg * 2.20462; } // — Calculations — var bmi, bmiCategory, idealWeightMinKg, idealWeightMaxKg, bmr; // BMI Calculation var heightM = heightCm / 100; bmi = weightKg / (heightM * heightM); bmi = parseFloat(bmi.toFixed(1)); // Round BMI to 1 decimal place // BMI Category if (bmi = 18.5 && bmi = 25 && bmi = 30 && bmi = 35 && bmi 0) { if (gender === 'male') { bmr = (10 * weightKg) + (6.25 * heightCm) – (5 * age) + 5; } else if (gender === 'female') { bmr = (10 * weightKg) + (6.25 * heightCm) – (5 * age) – 161; } else { // Unspecified gender often defaults to a calculation structure, or can be left at 0 // For simplicity, let's default to female calculation if unspecified and age is given. // A more complex logic could average or use a neutral factor. bmr = (10 * weightKg) + (6.25 * heightCm) – (5 * age) – 161; } bmr = parseFloat(bmr.toFixed(0)); // BMR typically shown as whole number } else { bmrValueSpan.textContent = "N/A (Provide Age)"; } // — Display Results — primaryResultDiv.textContent = bmi; idealWeightRangeSpan.textContent = idealWeightRangeText; bmiCategorySpan.textContent = bmiCategory; if (age > 0) { bmrValueSpan.textContent = bmr + " kcal/day"; } // — Update Chart — updateChart(bmi, idealWeightMinKg, idealWeightMaxKg, heightCm); } function updateChart(currentBmi, idealMinKg, idealMaxKg, heightCm) { var ctx = document.getElementById('bmiIdealWeightChart').getContext('2d'); // Clear previous chart instance if it exists if (chartInstance) { chartInstance.destroy(); } // Convert ideal weight range to BMI values for plotting var heightM = heightCm / 100; var idealMinBmi = (idealMinKg / (heightM * heightM)); var idealMaxBmi = (idealMaxKg / (heightM * heightM)); // Ensure BMI values are within reasonable bounds for chart axes var chartMinBmi = 15; var chartMaxBmi = 40; var chartBmiScaleMax = Math.max(chartMaxBmi, currentBmi + 5, idealMaxBmi + 5); chartInstance = new Chart(ctx, { type: 'bar', // Using bar chart for clear visual comparison data: { labels: ['Your BMI', 'Ideal Range'], datasets: [ { label: 'BMI Value', data: [currentBmi, null], // Current BMI as a bar backgroundColor: 'rgba(0, 74, 153, 0.7)', // Primary color borderColor: 'rgba(0, 74, 153, 1)', borderWidth: 1, barThickness: 40 }, { label: 'Ideal Weight BMI', data: [null, idealMaxBmi], // Use max ideal BMI for upper bound backgroundColor: 'rgba(40, 167, 69, 0.7)', // Success color for range borderColor: 'rgba(40, 167, 69, 1)', borderWidth: 1, barThickness: 40 }, { label: 'Ideal Weight BMI', data: [null, idealMinBmi], // Use min ideal BMI for lower bound backgroundColor: 'rgba(255, 193, 7, 0.7)', // Warning color for range borderColor: 'rgba(255, 193, 7, 1)', borderWidth: 1, barThickness: 40 } ] }, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: false, title: { display: true, text: 'BMI (kg/m²)', color: 'var(–primary-color)' }, suggestedMin: chartMinBmi, suggestedMax: chartBmiScaleMax, ticks: { color: 'var(–text-color)' } }, x: { title: { display: true, text: 'Metric', color: 'var(–primary-color)' }, ticks: { color: 'var(–text-color)' } } }, plugins: { legend: { display: false // Hide legend, labels are clear }, title: { display: true, text: 'Your BMI vs. Ideal Weight BMI Range', font: { size: 16 }, color: 'var(–primary-color)' }, tooltip: { callbacks: { label: function(context) { var label = context.dataset.label || "; if (label) { label += ': '; } if (context.parsed.y !== null) { label += context.parsed.y.toFixed(1); } return label; } } } } } }); } function resetCalculator() { document.getElementById('heightCm').value = 170; document.getElementById('weightKg').value = 70; document.getElementById('unitSystem').value = 'metric'; document.getElementById('age').value = "; document.getElementById('gender').value = 'unspecified'; // Clear errors document.getElementById('heightCmError').textContent = "; document.getElementById('weightKgError').textContent = "; document.getElementById('ageError').textContent = "; // Reset results display document.getElementById('primaryResult').textContent = '–'; document.getElementById('idealWeightRange').textContent = '–'; document.getElementById('bmiCategory').textContent = '–'; document.getElementById('bmrValue').textContent = '–'; // Clear and reset chart if (chartInstance) { chartInstance.destroy(); chartInstance = null; } var canvas = document.getElementById('bmiIdealWeightChart'); var ctx = canvas.getContext('2d'); ctx.clearRect(0, 0, canvas.width, canvas.height); // Clear canvas content } function copyResults() { var primaryResult = document.getElementById('primaryResult').textContent; var idealWeightRange = document.getElementById('idealWeightRange').textContent; var bmiCategory = document.getElementById('bmiCategory').textContent; var bmrValue = document.getElementById('bmrValue').textContent; var assumptions = []; if(document.getElementById('age').value !== ") assumptions.push("Age: " + document.getElementById('age').value); if(document.getElementById('gender').value !== 'unspecified') assumptions.push("Gender: " + document.getElementById('gender').value); assumptions.push("Units: " + document.getElementById('unitSystem').value); var resultsText = "— Your Health Metrics —\n\n"; resultsText += "BMI: " + primaryResult + "\n"; resultsText += "BMI Category: " + bmiCategory + "\n"; resultsText += "Ideal Weight Range: " + idealWeightRange + "\n"; resultsText += "BMR: " + bmrValue + "\n\n"; if (assumptions.length > 0) { resultsText += "Key Assumptions:\n"; assumptions.forEach(function(assumption) { resultsText += "- " + assumption + "\n"; }); } // Use a temporary textarea to copy text to clipboard var textArea = document.createElement("textarea"); textArea.value = resultsText; textArea.style.position = "fixed"; textArea.style.left = "-9999px"; 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.'; // Optional: Show a temporary notification to the user var notification = document.createElement('div'); notification.textContent = msg; notification.style.cssText = 'position: fixed; top: 10px; left: 50%; transform: translateX(-50%); background-color: var(–primary-color); color: white; padding: 10px 20px; border-radius: 5px; z-index: 1000;'; document.body.appendChild(notification); setTimeout(function() { document.body.removeChild(notification); }, 2000); } catch (err) { console.error('Fallback: Oops, unable to copy', err); } document.body.removeChild(textArea); } // Initialize calculator on page load document.addEventListener('DOMContentLoaded', function() { calculateMetrics(); // Calculate with default values on load document.getElementById('unitSystem').addEventListener('change', calculateMetrics); document.getElementById('gender').addEventListener('change', calculateMetrics); document.getElementById('heightCm').addEventListener('input', calculateMetrics); document.getElementById('weightKg').addEventListener('input', calculateMetrics); document.getElementById('age').addEventListener('input', calculateMetrics); // FAQ functionality var faqItems = document.querySelectorAll('.faq-item h4'); faqItems.forEach(function(item) { item.addEventListener('click', function() { var parent = this.parentElement; parent.classList.toggle('active'); }); }); });

Leave a Comment