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 defined as the weight in kilograms divided by the square of the height in meters (kg/m²).
The calculator uses the standard 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: Asian populations have different associations between BMI, percentage of body fat, and health risks than European populations. The World Health Organization recommends lower BMI thresholds for Asian populations:
Tips: Enter weight in kilograms and height in meters. For height, you can convert from cm to m by dividing by 100 (e.g., 170 cm = 1.70 m).
Q1: Why different BMI categories for Asians?
A: Asians generally have higher body fat percentage at lower BMI levels and higher risk of type 2 diabetes and cardiovascular disease at lower BMI levels compared to Caucasians.
Q2: Is BMI accurate for athletes?
A: BMI may overestimate body fat in athletes and others with muscular builds, as it doesn't distinguish between muscle and fat mass.
Q3: What's a healthy BMI range for Asian adults?
A: For most Asian adults, a BMI between 18.5 and 22.9 is considered healthy, with increased health risks above 23.
Q4: Does BMI apply to children?
A: No, children and teens need age- and sex-specific BMI percentiles rather than these fixed categories.
Q5: Are there better measures than BMI?
A: While BMI is useful for population studies, waist circumference or body fat percentage may be better individual indicators of health risks.