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BMI Formula:
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Body Mass Index (BMI) is a simple index of weight-for-height that is commonly used to classify underweight, overweight and obesity in adults. It is calculated by dividing a person's weight in kilograms by the square of their height in meters.
The calculator uses the BMI formula:
Where:
Explanation: BMI provides a simple numeric measure of a person's thickness or thinness, allowing health professionals to discuss weight problems more objectively with their patients.
Details: BMI is a screening tool that can indicate whether a person is underweight, normal weight, overweight, or obese. Higher BMI values are associated with increased risk of various health conditions including heart disease, high blood pressure, type 2 diabetes, and certain cancers.
Tips: Enter weight in kilograms and height in meters. All values must be valid (weight > 0, height > 0). For accurate results, measure weight and height without shoes and heavy clothing.
Q1: Is BMI an accurate measure of body fat?
A: While BMI is a useful screening tool, it doesn't directly measure body fat. It may overestimate body fat in athletes and underestimate it in older persons who have lost muscle mass.
Q2: What are the standard BMI categories?
A: Underweight: <18.5, Normal weight: 18.5-24.9, Overweight: 25-29.9, Obesity: ≥30.
Q3: Does BMI apply to everyone?
A: BMI may not be accurate for athletes, pregnant women, the elderly, or children. Other measurements like waist circumference may provide additional information.
Q4: How often should I calculate my BMI?
A: For most adults, checking BMI once every few months is sufficient unless you're actively trying to change your weight.
Q5: Can BMI indicate belly fat specifically?
A: While BMI is a general indicator, it doesn't specifically measure belly fat. Waist-to-hip ratio or waist circumference measurements may be better indicators of abdominal obesity.