BMI Calculator
Calculate your Body Mass Index using WHO classifications. Metric and imperial units supported.
Enter your measurements
Underweight
BMI < 18.5
Normal weight
BMI 18.5 – 24.9
Overweight
BMI 25 – 29.9
Obese
BMI ≥ 30
Your result
Enter height and weight to see your BMI
Formula: weight (kg) ÷ height² (m²). Classification per WHO Global BMI Standards. Reviewed Sep 2026.
Important: BMI is a screening tool, not a diagnostic measure. It may not accurately reflect body fat or health in athletes, pregnant women, elderly individuals, or certain ethnic groups. Always consult a healthcare provider for personalised advice.