Bmi Calculator Ideal Weight

BMI Calculator & Ideal Weight – Calculate Your Healthy Weight Range :root { –primary-color: #004a99; –secondary-color: #e9ecef; –background-color: #f8f9fa; –card-background: #ffffff; –text-color: #333; –border-color: #dee2e6; –shadow-color: rgba(0, 0, 0, 0.05); } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); margin: 0; padding: 0; line-height: 1.6; } .container { max-width: 960px; margin: 20px auto; padding: 20px; background-color: var(–card-background); border-radius: 8px; box-shadow: 0 2px 10px var(–shadow-color); } h1, h2, h3 { color: var(–primary-color); text-align: center; margin-bottom: 1.5em; } h1 { font-size: 2.5em; } h2 { font-size: 1.8em; margin-top: 1.5em; } h3 { font-size: 1.4em; margin-top: 1.2em; } .calculator-section { margin-bottom: 30px; padding: 25px; border: 1px solid var(–border-color); border-radius: 8px; background-color: var(–card-background); } .input-group { margin-bottom: 20px; text-align: left; } .input-group label { display: block; margin-bottom: 8px; font-weight: bold; color: var(–primary-color); } .input-group input[type="number"], .input-group select { width: calc(100% – 22px); padding: 10px; border: 1px solid var(–border-color); border-radius: 4px; font-size: 1em; box-sizing: border-box; } .input-group .helper-text { font-size: 0.85em; color: #6c757d; margin-top: 5px; display: block; } .error-message { color: #dc3545; font-size: 0.85em; margin-top: 5px; display: none; /* Hidden by default */ } .button-group { display: flex; justify-content: space-between; margin-top: 25px; gap: 10px; } .button-group button { flex: 1; padding: 12px 20px; border: none; border-radius: 4px; font-size: 1em; font-weight: bold; cursor: pointer; transition: background-color 0.3s ease; text-transform: uppercase; } .calculate-button { background-color: var(–primary-color); color: white; } .calculate-button:hover { background-color: #003366; } .reset-button { background-color: var(–secondary-color); color: var(–primary-color); border: 1px solid var(–primary-color); } .reset-button:hover { background-color: #d3d9e0; } .copy-button { background-color: #28a745; color: white; margin-top: 10px; } .copy-button:hover { background-color: #218838; } #results { margin-top: 30px; padding: 25px; border: 1px solid var(–border-color); border-radius: 8px; background-color: var(–card-background); text-align: center; } #results h3 { margin-top: 0; margin-bottom: 15px; } .result-item { margin-bottom: 15px; font-size: 1.1em; } .result-item strong { color: var(–primary-color); } .primary-result { font-size: 2em; font-weight: bold; color: var(–primary-color); margin-bottom: 20px; padding: 15px; background-color: var(–secondary-color); border-radius: 4px; } .bmi-category { font-weight: bold; margin-top: 10px; padding: 10px; border-radius: 4px; } .bmi-category.underweight { background-color: #ffc107; color: #333; } .bmi-category.normal { background-color: #28a745; color: white; } .bmi-category.overweight { background-color: #fd7e14; color: white; } .bmi-category.obese { background-color: #dc3545; color: white; } .formula-explanation { font-size: 0.9em; color: #6c757d; margin-top: 15px; text-align: left; } .table-container { overflow-x: auto; margin-top: 25px; margin-bottom: 25px; border: 1px solid var(–border-color); border-radius: 4px; } table { width: 100%; border-collapse: collapse; min-width: 500px; /* For horizontal scrolling */ } th, td { padding: 12px 15px; text-align: center; border: 1px solid var(–border-color); } thead { background-color: var(–primary-color); color: white; } tbody tr:nth-child(even) { background-color: var(–secondary-color); } caption { font-size: 1.1em; font-weight: bold; color: var(–primary-color); margin-bottom: 10px; caption-side: top; text-align: left; } canvas { max-width: 100%; height: auto; display: block; margin: 20px auto; border: 1px solid var(–border-color); border-radius: 4px; } .article-content { margin-top: 40px; padding: 25px; border: 1px solid var(–border-color); border-radius: 8px; background-color: var(–card-background); } .article-content p { margin-bottom: 1.2em; } .article-content a { color: var(–primary-color); text-decoration: none; } .article-content a:hover { text-decoration: underline; } .related-links ul { list-style: none; padding: 0; } .related-links li { margin-bottom: 10px; } .related-links a { font-weight: bold; } footer { text-align: center; margin-top: 40px; padding: 20px; font-size: 0.9em; color: #6c757d; } @media (max-width: 768px) { .container { margin: 10px; padding: 15px; } h1 { font-size: 2em; } h2 { font-size: 1.5em; } h3 { font-size: 1.2em; } .button-group { flex-direction: column; } .button-group button { width: 100%; } table { min-width: 100%; } }

BMI Calculator & Ideal Weight

Calculate Your BMI and Ideal Weight

Enter your height in centimeters (cm).
Enter your weight in kilograms (kg).

Your Results

BMI Category:
Ideal Weight Range (kg):
Weight for Height (kg):
Formula Used: BMI is calculated by dividing your weight in kilograms by the square of your height in meters (kg/m²). Ideal weight ranges are estimated based on standard BMI classifications.

BMI and Ideal Weight Data

BMI Categories and Health Risks
Category BMI Range (kg/m²) Health Risk
Underweight < 18.5 Increased risk of nutritional deficiencies, osteoporosis.
Normal Weight 18.5 – 24.9 Low risk of chronic disease.
Overweight 25.0 – 29.9 Increased risk of heart disease, diabetes, high blood pressure.
Obese (Class I) 30.0 – 34.9 High risk of heart disease, diabetes, sleep apnea.
Obese (Class II) 35.0 – 39.9 Very high risk of heart disease, diabetes, sleep apnea.
Obese (Class III) ≥ 40.0 Extremely high risk of heart disease, diabetes, sleep apnea, mobility issues.

BMI and Ideal Weight Chart

Chart Key:

  • BMI Value
  • Underweight Range
  • Normal Range
  • Overweight Range
  • Obese Range

Understanding BMI and Your Ideal Weight

What is BMI Calculator Ideal Weight?

The concept of a BMI calculator ideal weight is a crucial tool for understanding your current health status and setting realistic weight goals. Body Mass Index (BMI) is a widely used metric that estimates your body fat based on your height and weight. It's a simple, non-invasive way to screen for potential weight categories that might lead to health problems. An ideal weight range, derived from BMI calculations, provides a target zone for maintaining good health and reducing the risk of weight-related diseases. This bmi calculator ideal weight tool helps you quickly assess where you stand and what a healthy weight might look like for your specific height.

Understanding your BMI is the first step towards a healthier lifestyle. It's important to remember that BMI is a screening tool, not a diagnostic one. Factors like muscle mass, bone density, and body composition can influence BMI. However, for the general population, it offers a valuable insight. Our bmi calculator ideal weight provides a straightforward way to get this information and explore what a healthy weight range means for you.

BMI Calculator Ideal Weight Formula and Mathematical Explanation

The core of the bmi calculator ideal weight lies in the BMI formula itself. The standard formula for calculating BMI is:

BMI = Weight (kg) / (Height (m))²

Where:

  • Weight is measured in kilograms (kg).
  • Height is measured in meters (m).

To use this formula, you first need to convert your height from centimeters to meters by dividing by 100. For example, if your height is 175 cm, it is 1.75 meters.

Example Calculation:

If a person weighs 70 kg and is 175 cm (1.75 m) tall:

BMI = 70 kg / (1.75 m)²

BMI = 70 kg / 3.0625 m²

BMI ≈ 22.86

This BMI value of approximately 22.86 falls within the "Normal Weight" category (18.5 – 24.9).

The bmi calculator ideal weight then uses this BMI value to estimate an ideal weight range. This is typically done by calculating the weight needed to achieve the lower and upper bounds of the "Normal Weight" BMI category (18.5 and 24.9) for your specific height.

Ideal Weight Range Calculation:

Lower Ideal Weight = 18.5 * (Height (m))²

Upper Ideal Weight = 24.9 * (Height (m))²

Using the same example (Height = 1.75 m):

Lower Ideal Weight = 18.5 * (1.75 m)² ≈ 56.7 kg

Upper Ideal Weight = 24.9 * (1.75 m)² ≈ 76.7 kg

So, for someone 175 cm tall, the ideal weight range is approximately 56.7 kg to 76.7 kg.

Practical Examples (Real-World Use Cases)

The bmi calculator ideal weight is incredibly versatile and useful for various individuals:

  • Individuals Monitoring Weight: Someone looking to lose or gain weight can use the calculator to set achievable goals. For instance, if your BMI is 28 (Overweight) and you are 165 cm tall, the calculator will show your current weight and suggest an ideal weight range (e.g., 51 kg to 68 kg). This gives you a clear target.
  • Fitness Enthusiasts: Athletes and fitness buffs can use BMI as one metric among others to assess their body composition. While high muscle mass can increase BMI, understanding the healthy range helps ensure they are not carrying excessive unhealthy fat.
  • Health Professionals: Doctors and dietitians use BMI as a quick screening tool during patient check-ups to identify potential weight-related health risks and discuss appropriate interventions.
  • Parents and Guardians: For older children and adolescents, BMI-for-age percentiles are used, but the adult bmi calculator ideal weight can help educate about healthy weight concepts.
  • Public Health Initiatives: BMI data is often used in population studies to track obesity trends and the effectiveness of public health campaigns aimed at promoting healthy lifestyles.

These examples highlight how a simple bmi calculator ideal weight can empower individuals and inform health decisions across different contexts.

How to Use This BMI Calculator Ideal Weight

Using our bmi calculator ideal weight is designed to be simple and intuitive:

  1. Enter Height: Input your height in centimeters (cm) into the "Height" field. For example, if you are 5 feet 9 inches, that's approximately 175 cm.
  2. Enter Weight: Input your current weight in kilograms (kg) into the "Weight" field. For example, 70 kg.
  3. Calculate: Click the "Calculate" button.
  4. View Results: The calculator will instantly display your calculated BMI, your corresponding BMI category (Underweight, Normal, Overweight, Obese), and your estimated ideal weight range in kilograms.
  5. Understand the Formula: A brief explanation of the BMI formula and how the ideal weight range is derived is provided below the results.
  6. Reset: If you need to perform a new calculation or correct an entry, click the "Reset" button.
  7. Copy Results: Use the "Copy Results" button to easily share your findings or save them for your records.

This straightforward process makes understanding your bmi calculator ideal weight accessible to everyone.

Key Factors That Affect BMI Results

While the bmi calculator ideal weight provides a valuable estimate, several factors can influence its interpretation:

  • Muscle Mass: Muscle is denser than fat. Individuals with a high amount of muscle mass (e.g., bodybuilders, athletes) may have a higher BMI even if they have low body fat. Their BMI might place them in the "overweight" or "obese" category, but they may still be very healthy.
  • Bone Density: People with naturally larger or denser bones might weigh more, potentially affecting their BMI.
  • Body Composition: BMI doesn't distinguish between fat mass and lean mass. Two people with the same height and weight can have very different health profiles based on their body fat percentage.
  • Age: BMI interpretations can sometimes vary slightly with age, particularly for older adults where muscle mass naturally decreases.
  • Sex: While the BMI formula is the same, typical body fat percentages can differ between males and females.
  • Pregnancy: BMI is not an accurate measure for pregnant women, as weight gain is expected and necessary.

It's essential to consider these factors alongside your bmi calculator ideal weight results and consult with a healthcare professional for a comprehensive health assessment.

Frequently Asked Questions (FAQ)

Is BMI a perfect measure of health?

No, BMI is a screening tool, not a diagnostic one. It doesn't account for body composition (muscle vs. fat), bone density, or fat distribution. A healthcare provider should be consulted for a complete health evaluation.

What is the difference between BMI and ideal weight?

BMI is a ratio of weight to height (kg/m²). Ideal weight is an estimated weight range that corresponds to a healthy BMI (typically 18.5-24.9) for a given height.

Can children use this BMI calculator?

This calculator is designed for adults. Children and adolescents use BMI-for-age percentiles, which account for growth and development. Consult a pediatrician for child BMI information.

How often should I check my BMI?

Regularly checking your BMI, perhaps annually or as part of routine check-ups, can help you monitor trends. However, focus on overall healthy habits rather than just the number.

What should I do if my BMI is outside the normal range?

If your BMI indicates you are underweight, overweight, or obese, it's advisable to consult a doctor or a registered dietitian. They can help you understand the implications and develop a personalized plan for achieving a healthier weight.

Related Tools and Internal Resources

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var heightInput = document.getElementById('height'); var weightInput = document.getElementById('weight'); var bmiResultDiv = document.getElementById('bmiResult'); var bmiCategorySpan = document.getElementById('bmiCategory'); var idealWeightRangeSpan = document.getElementById('idealWeightRange'); var weightForHeightSpan = document.getElementById('weightForHeight'); var resultsDiv = document.getElementById('results'); var heightError = document.getElementById('heightError'); var weightError = document.getElementById('weightError'); var bmiChartCanvas = document.getElementById('bmiChart'); var chartInstance = null; function validateInput(value, errorElement, fieldName) { var numValue = parseFloat(value); if (isNaN(numValue) || numValue <= 0) { errorElement.textContent = fieldName + " must be a positive number."; errorElement.style.display = 'block'; return false; } errorElement.textContent = ''; errorElement.style.display = 'none'; return true; } function calculateBMI() { var heightCm = heightInput.value; var weightKg = weightInput.value; var isHeightValid = validateInput(heightCm, heightError, "Height"); var isWeightValid = validateInput(weightKg, weightError, "Weight"); if (!isHeightValid || !isWeightValid) { resultsDiv.style.display = 'none'; return; } var heightM = parseFloat(heightCm) / 100; var bmi = parseFloat(weightKg) / (heightM * heightM); bmi = bmi.toFixed(2); var bmiCategory = ''; var bmiClass = ''; var idealWeightMin = 0; var idealWeightMax = 0; if (bmi = 18.5 && bmi = 25 && bmi <= 29.9) { bmiCategory = 'Overweight'; bmiClass = 'overweight'; idealWeightMin = 18.5 * (heightM * heightM); idealWeightMax = 24.9 * (heightM * heightM); } else { bmiCategory = 'Obese'; bmiClass = 'obese'; idealWeightMin = 18.5 * (heightM * heightM); idealWeightMax = 24.9 * (heightM * heightM); } bmiResultDiv.textContent = bmi; bmiResultDiv.className = 'primary-result ' + bmiClass; bmiCategorySpan.textContent = bmiCategory; idealWeightRangeSpan.textContent = idealWeightMin.toFixed(1) + ' kg – ' + idealWeightMax.toFixed(1) + ' kg'; weightForHeightSpan.textContent = parseFloat(weightKg).toFixed(1) + ' kg'; resultsDiv.style.display = 'block'; updateChart(bmi, idealWeightMin, idealWeightMax); } function resetCalculator() { heightInput.value = ''; weightInput.value = ''; heightError.textContent = ''; heightError.style.display = 'none'; weightError.textContent = ''; weightError.style.display = 'none'; resultsDiv.style.display = 'none'; if (chartInstance) { chartInstance.destroy(); chartInstance = null; } if (bmiChartCanvas.getContext) { var ctx = bmiChartCanvas.getContext('2d'); ctx.clearRect(0, 0, bmiChartCanvas.width, bmiChartCanvas.height); } } function copyResults() { var bmi = bmiResultDiv.textContent; var category = bmiCategorySpan.textContent; var idealRange = idealWeightRangeSpan.textContent; var weightCurrent = weightForHeightSpan.textContent; var heightCm = heightInput.value; var weightKg = weightInput.value; var textToCopy = "BMI Calculation Results:\n\n"; textToCopy += "Height: " + heightCm + " cm\n"; textToCopy += "Weight: " + weightKg + " kg\n"; textToCopy += "——————–\n"; textToCopy += "BMI: " + bmi + "\n"; textToCopy += "BMI Category: " + category + "\n"; textToCopy += "Ideal Weight Range: " + idealRange + "\n"; textToCopy += "Current Weight for Height: " + weightCurrent + "\n\n"; textToCopy += "Formula: BMI = Weight (kg) / (Height (m))^2\n"; textToCopy += "Ideal weight ranges are based on a BMI of 18.5-24.9."; var textArea = document.createElement("textarea"); textArea.value = textToCopy; 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!' : 'Copying failed!'; alert(msg); } catch (err) { alert('Oops, unable to copy'); } document.body.removeChild(textArea); } function updateChart(currentBmi, idealMin, idealMax) { var ctx = bmiChartCanvas.getContext('2d'); if (chartInstance) { chartInstance.destroy(); } var heightM = parseFloat(heightInput.value) / 100; var bmiCategories = { underweight: { min: 0, max: 18.5, color: '#ffc107' }, normal: { min: 18.5, max: 24.9, color: '#28a745' }, overweight: { min: 25, max: 29.9, color: '#fd7e14' }, obese: { min: 30, max: 50, color: '#dc3545' } // Extended obese range for chart }; var chartData = { labels: ["BMI Value"], datasets: [ { label: 'BMI Range', data: [currentBmi], backgroundColor: 'rgba(0, 74, 153, 0.6)', // Primary color for current BMI borderColor: 'rgba(0, 74, 153, 1)', borderWidth: 1, type: 'bar', // Use bar for current BMI barPercentage: 0.5, categoryPercentage: 0.5 }, { label: 'Underweight Range', data: [bmiCategories.underweight.max], backgroundColor: bmiCategories.underweight.color, borderColor: bmiCategories.underweight.color, borderWidth: 1, type: 'line', fill: false, pointRadius: 0, spanGaps: false }, { label: 'Normal Range', data: [bmiCategories.normal.max], backgroundColor: bmiCategories.normal.color, borderColor: bmiCategories.normal.color, borderWidth: 1, type: 'line', fill: '-1', // Fill to previous dataset (underweight max) pointRadius: 0, spanGaps: false }, { label: 'Overweight Range', data: [bmiCategories.overweight.max], backgroundColor: bmiCategories.overweight.color, borderColor: bmiCategories.overweight.color, borderWidth: 1, type: 'line', fill: '-1', // Fill to previous dataset (normal max) pointRadius: 0, spanGaps: false }, { label: 'Obese Range', data: [bmiCategories.obese.max], backgroundColor: bmiCategories.obese.color, borderColor: bmiCategories.obese.color, borderWidth: 1, type: 'line', fill: '-1', // Fill to previous dataset (overweight max) pointRadius: 0, spanGaps: false } ] }; var options = { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true, title: { display: true, text: 'BMI (kg/m²)' }, ticks: { stepSize: 5 } }, x: { title: { display: true, text: 'Category' } } }, plugins: { legend: { display: true, position: 'top', }, title: { display: true, text: 'BMI Distribution and Your Value' } } }; // Simple Chart.js-like implementation using Canvas API // This is a simplified representation and not a full charting library // For a real application, a library like Chart.js would be used. // Here, we'll draw basic shapes to represent the data. // Clear previous drawing ctx.clearRect(0, 0, bmiChartCanvas.width, bmiChartCanvas.height); var chartWidth = bmiChartCanvas.width; var chartHeight = bmiChartCanvas.height; var padding = 40; var chartAreaWidth = chartWidth – 2 * padding; var chartAreaHeight = chartHeight – 2 * padding; var maxYValue = 50; // Max BMI to display on Y-axis var scaleY = chartAreaHeight / maxYValue; // Draw Y-axis ctx.beginPath(); ctx.moveTo(padding, padding); ctx.lineTo(padding, chartHeight – padding); ctx.lineTo(chartWidth – padding, chartHeight – padding); ctx.strokeStyle = '#ccc'; ctx.stroke(); // Draw Y-axis labels and grid lines for (var i = 0; i <= maxYValue; i += 5) { var yPos = chartHeight – padding – (i * scaleY); ctx.fillText(i, padding – 30, yPos + 5); ctx.beginPath(); ctx.moveTo(padding, yPos); ctx.lineTo(chartWidth – padding, yPos); ctx.strokeStyle = '#eee'; ctx.stroke(); } // Draw X-axis label ctx.textAlign = 'center'; ctx.fillText('Your BMI', chartWidth / 2, chartHeight – padding + 20); // Draw BMI Categories as Rectangles var categoryWidth = chartAreaWidth / 4; // Divide area into 4 main categories // Underweight var uwMaxY = chartHeight – padding – (bmiCategories.underweight.max * scaleY); ctx.fillStyle = bmiCategories.underweight.color; ctx.fillRect(padding, uwMaxY, categoryWidth, chartHeight – padding – uwMaxY); // Normal var nMinY = chartHeight – padding – (bmiCategories.normal.max * scaleY); var nMaxY = chartHeight – padding – (bmiCategories.normal.min * scaleY); ctx.fillStyle = bmiCategories.normal.color; ctx.fillRect(padding + categoryWidth, nMinY, categoryWidth, nMaxY – nMinY); // Overweight var owMinY = chartHeight – padding – (bmiCategories.overweight.max * scaleY); var owMaxY = chartHeight – padding – (bmiCategories.overweight.min * scaleY); ctx.fillStyle = bmiCategories.overweight.color; ctx.fillRect(padding + 2 * categoryWidth, owMinY, categoryWidth, owMaxY – owMinY); // Obese var obMinY = chartHeight – padding – (bmiCategories.obese.max * scaleY); var obMaxY = chartHeight – padding – (bmiCategories.obese.min * scaleY); ctx.fillStyle = bmiCategories.obese.color; ctx.fillRect(padding + 3 * categoryWidth, obMinY, categoryWidth, obMaxY – obMinY); // Draw Current BMI Bar var currentBmiY = chartHeight – padding – (currentBmi * scaleY); ctx.fillStyle = 'rgba(0, 74, 153, 0.8)'; // Darker primary color for current BMI bar ctx.fillRect(chartWidth / 2 – 15, currentBmiY, 30, chartHeight – padding – currentBmiY); ctx.fillStyle = 'black'; ctx.fillText(currentBmi, chartWidth / 2, currentBmiY – 10); // Add legend manually var legendX = padding; var legendY = chartHeight – padding + 50; var legendBoxSize = 15; ctx.textAlign = 'left'; // Underweight Legend ctx.fillStyle = bmiCategories.underweight.color; ctx.fillRect(legendX, legendY, legendBoxSize, legendBoxSize); ctx.fillText('Underweight', legendX + legendBoxSize + 5, legendY + legendBoxSize – 3); legendX += 120; // Adjust spacing // Normal Legend ctx.fillStyle = bmiCategories.normal.color; ctx.fillRect(legendX, legendY, legendBoxSize, legendBoxSize); ctx.fillText('Normal', legendX + legendBoxSize + 5, legendY + legendBoxSize – 3); legendX += 80; // Overweight Legend ctx.fillStyle = bmiCategories.overweight.color; ctx.fillRect(legendX, legendY, legendBoxSize, legendBoxSize); ctx.fillText('Overweight', legendX + legendBoxSize + 5, legendY + legendBoxSize – 3); legendX += 100; // Obese Legend ctx.fillStyle = bmiCategories.obese.color; ctx.fillRect(legendX, legendY, legendBoxSize, legendBoxSize); ctx.fillText('Obese', legendX + legendBoxSize + 5, legendY + legendBoxSize – 3); legendX += 80; // Current BMI Legend ctx.fillStyle = 'rgba(0, 74, 153, 0.8)'; ctx.fillRect(legendX, legendY, legendBoxSize, legendBoxSize); ctx.fillText('Your BMI', legendX + legendBoxSize + 5, legendY + legendBoxSize – 3); } // Initial chart setup on load if values are present (e.g., from URL params) // For this example, we'll just ensure the canvas is ready. // A full chart library would handle initial rendering better. // We'll rely on calculateBMI() to draw the chart after user input. // Set default values for demonstration if needed, or leave blank // heightInput.value = 175; // weightInput.value = 70; // calculateBMI(); // Calculate on load if defaults are set // Ensure canvas has a default size or is responsive bmiChartCanvas.width = bmiChartCanvas.parentElement.clientWidth; bmiChartCanvas.height = 300; // Default height window.addEventListener('resize', function() { if (bmiChartCanvas.getContext) { bmiChartCanvas.width = bmiChartCanvas.parentElement.clientWidth; bmiChartCanvas.height = 300; // Reset height on resize or adjust dynamically // Re-calculate and redraw if values exist if (heightInput.value && weightInput.value) { calculateBMI(); } } });

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