BMI Calculator

BMI (Body Mass Index) is a measure of body fat based on height and weight. It's calculated using the formula: BMI = weight (kg) / height (m)². For imperial units: BMI = (weight in pounds × 703) / (height in inches)². BMI helps categorize individuals as underweight, normal weight, overweight, or obese, providing a general indication of health status.

BMI categories are: Underweight (BMI < 18.5) - may indicate malnutrition or health issues; Normal weight (BMI 18.5-24.9) - associated with lowest health risks; Overweight (BMI 25-29.9) - increased risk of health problems; Obese (BMI ≥ 30) - significantly increased risk of serious health conditions like diabetes, heart disease, and stroke.

BMI has limitations and may not be accurate for everyone. It doesn't distinguish between muscle and fat mass, so athletes or very muscular individuals may have high BMI despite being healthy. It's also less accurate for elderly people, children, pregnant women, and certain ethnic groups. BMI should be used alongside other health assessments for a complete picture.

If your BMI indicates overweight or obesity, consult a healthcare professional for personalized advice. Generally, focus on gradual weight loss through balanced nutrition, regular physical activity, and lifestyle changes. Aim for 1-2 pounds of weight loss per week through a combination of reduced calorie intake and increased exercise. Avoid crash diets and seek professional guidance for sustainable results.

For general health monitoring, checking BMI monthly or quarterly is sufficient. If you're actively trying to lose or gain weight, weekly measurements can help track progress. However, don't obsess over daily fluctuations as weight can vary due to factors like hydration, food intake, and hormonal changes. Focus on long-term trends rather than daily variations, and combine BMI tracking with other health indicators.