How to Use the BMI Calculator
Enter your weight and height. Toggle between metric (kg/cm) and imperial (lbs/ft-in). BMI calculates instantly. See your category, healthy weight range, and Asian-specific thresholds.
BMI Calculator Formula
BMI = weight_kg / (height_m)²Example Calculation
Weight 70 kg, height 170 cm:
BMI = 70 / (1.70)² = 70 / 2.89
BMI = 24.2 — Normal weight (Asian threshold: borderline overweight at ≥23)
Frequently Asked Questions
What is a healthy BMI range?
Standard BMI ranges: below 18.5 = Underweight, 18.5–24.9 = Normal, 25–29.9 = Overweight, 30+ = Obese. For people of Asian descent (including Indians), health risks start at lower BMI — overweight threshold is 23, obese is 27.5.
Is BMI an accurate measure of health?
BMI is a useful screening tool but has limitations. It does not distinguish between muscle and fat, and does not account for fat distribution. Use BMI alongside waist circumference and WHR for a complete picture.