Weight Health Calculator – Loan calculator

BMI Calculator

The Body Mass Index (BMI) is a widely used screening tool to categorize individuals into weight categories based on their height and weight. While not a diagnostic tool, it can indicate potential weight-related health risks.

Weight: kg

Height: cm

Units: Metric (kg, cm) Imperial (lbs, inches)

Understanding Your Body Mass Index (BMI)

The Body Mass Index (BMI) is a simple numerical measure that uses your height and weight to estimate whether you are underweight, at a healthy weight, overweight, or obese. It's a common screening tool for potential weight problems for adults.

How is BMI Calculated?

The formula for BMI depends on the units of measurement used:

Metric System: BMI = weight (kg) / [height (m)]²
Imperial System: BMI = [weight (lbs) / height (inches)²] × 703

For example, if you weigh 70 kg and are 1.75 meters (175 cm) tall, your BMI would be 70 / (1.75 * 1.75) = 22.86.

What Do the BMI Categories Mean?

For most adults, the BMI categories are:

Underweight: Less than 18.5
Normal weight: 18.5 – 24.9
Overweight: 25.0 – 29.9
Obese: 30.0 or greater

These categories are general guidelines. For children and adolescents, BMI is interpreted differently, taking age and sex into account.

Limitations of BMI

While BMI is a useful screening tool, it has limitations:

Muscle Mass: It doesn't distinguish between fat and muscle. Athletes with high muscle mass may have a high BMI but very little body fat.
Body Composition: It doesn't account for body fat distribution. Someone with a healthy BMI might still have excess abdominal fat, which is a health risk.
Age and Sex: BMI ranges may not be appropriate for all age groups or sexes without further interpretation.
Ethnicity: Some ethnic groups may have different health risks at different BMI ranges.

Beyond BMI

BMI is just one piece of the puzzle. For a comprehensive assessment of your weight health, consider other factors like waist circumference, body fat percentage, diet, physical activity levels, and overall health conditions. Always consult with a healthcare professional for personalized advice regarding your weight and health.

.calculator-container { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; max-width: 600px; margin: 20px auto; padding: 25px; border-radius: 10px; background-color: #f9f9f9; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1); color: #333; } .calculator-container h2 { text-align: center; color: #2c3e50; margin-bottom: 20px; font-size: 1.8em; } .calculator-container p { line-height: 1.6; margin-bottom: 15px; } .calculator-form .form-group { margin-bottom: 18px; display: flex; align-items: center; flex-wrap: wrap; } .calculator-form label { flex: 1; min-width: 100px; font-weight: bold; color: #555; margin-right: 10px; } .calculator-form input[type="number"] { flex: 2; padding: 12px; border: 1px solid #ccc; border-radius: 5px; font-size: 1em; box-sizing: border-box; min-width: 150px; } .calculator-form span { margin-left: 10px; font-weight: bold; color: #666; } .unit-selection { justify-content: flex-start; margin-top: 15px; } .unit-selection label { flex: none; margin-right: 15px; font-weight: normal; } .unit-selection input[type="radio"] { margin-right: 5px; width: auto; flex: none; } .calculator-form button { display: block; width: 100%; padding: 12px 20px; background-color: #28a745; color: white; border: none; border-radius: 5px; font-size: 1.1em; cursor: pointer; transition: background-color 0.3s ease; margin-top: 20px; } .calculator-form button:hover { background-color: #218838; } .result-container { margin-top: 25px; padding: 15px; border-radius: 8px; background-color: #e9f7ef; border: 1px solid #d4edda; color: #155724; font-size: 1.1em; text-align: center; min-height: 50px; display: flex; align-items: center; justify-content: center; flex-direction: column; } .result-container strong { color: #0f3d1a; font-size: 1.2em; } .article-content { margin-top: 30px; padding-top: 20px; border-top: 1px solid #eee; } .article-content h3 { color: #2c3e50; margin-bottom: 15px; font-size: 1.5em; } .article-content h4 { color: #34495e; margin-top: 20px; margin-bottom: 10px; font-size: 1.2em; } .article-content ul { list-style-type: disc; margin-left: 20px; margin-bottom: 15px; } .article-content li { margin-bottom: 8px; line-height: 1.5; } function updateUnitLabels() { var weightUnitLabel = document.getElementById('weightUnitLabel'); var heightUnitLabel = document.getElementById('heightUnitLabel'); var weightInput = document.getElementById('weightInput'); var heightInput = document.getElementById('heightInput'); if (document.getElementById('unitMetric').checked) { weightUnitLabel.textContent = 'kg'; heightUnitLabel.textContent = 'cm'; weightInput.placeholder = 'e.g., 70'; heightInput.placeholder = 'e.g., 175'; } else { weightUnitLabel.textContent = 'lbs'; heightUnitLabel.textContent = 'inches'; weightInput.placeholder = 'e.g., 154'; heightInput.placeholder = 'e.g., 69'; } // Clear previous input values to avoid confusion with unit change weightInput.value = "; heightInput.value = "; document.getElementById('result').innerHTML = "; // Clear result } function calculateBMI() { var weight = parseFloat(document.getElementById('weightInput').value); var height = parseFloat(document.getElementById('heightInput').value); var resultDiv = document.getElementById('result'); var bmi = 0; var category = "; if (isNaN(weight) || isNaN(height) || weight <= 0 || height <= 0) { resultDiv.innerHTML = 'Please enter valid positive numbers for weight and height.'; return; } if (document.getElementById('unitMetric').checked) { // Metric: weight in kg, height in cm var heightMeters = height / 100; bmi = weight / (heightMeters * heightMeters); } else { // Imperial: weight in lbs, height in inches bmi = (weight / (height * height)) * 703; } if (bmi = 18.5 && bmi = 25.0 && bmi <= 29.9) { category = 'Overweight'; } else { category = 'Obese'; } resultDiv.innerHTML = 'Your BMI is: ' + bmi.toFixed(2) + '' + 'Category: ' + category + ''; } // Initialize unit labels on page load document.addEventListener('DOMContentLoaded', function() { updateUnitLabels(); });