Know my fitness
Body Mass
Index
Calculate your BMI and see where you fall on the standard health scale. Supports metric and imperial — results update instantly.
BMI calculator
Enter your measurements
Your result
BMI Score
Underweight
< 18.5
Normal
18.5–24.9
Overweight
25–29.9
Obese
≥ 30
Enter your height and weight above to calculate your BMI
Note for runners
BMI doesn't account for muscle mass or body composition. Trained runners often carry more lean mass than the general population and can show a higher BMI despite low body fat. Use it as a rough guide, not a definitive measure of fitness or health.